CN113355907B - Preparation method of sun-proof fabric, sun-proof fabric and sun-proof umbrella - Google Patents
Preparation method of sun-proof fabric, sun-proof fabric and sun-proof umbrella Download PDFInfo
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- CN113355907B CN113355907B CN202110610849.0A CN202110610849A CN113355907B CN 113355907 B CN113355907 B CN 113355907B CN 202110610849 A CN202110610849 A CN 202110610849A CN 113355907 B CN113355907 B CN 113355907B
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- dioxide powder
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- 239000004744 fabric Substances 0.000 title claims abstract description 144
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 182
- 238000000576 coating method Methods 0.000 claims abstract description 134
- 239000011248 coating agent Substances 0.000 claims abstract description 120
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 91
- 239000000843 powder Substances 0.000 claims abstract description 88
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 238000001035 drying Methods 0.000 claims abstract description 46
- 239000002245 particle Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000002791 soaking Methods 0.000 claims abstract description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 39
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 37
- 239000011247 coating layer Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 230000000475 sunscreen effect Effects 0.000 claims description 14
- 239000000516 sunscreening agent Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000004814 polyurethane Substances 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 13
- 229920006221 acetate fiber Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920002334 Spandex Polymers 0.000 claims description 3
- PUSKHXMZPOMNTQ-UHFFFAOYSA-N ethyl 2,1,3-benzoselenadiazole-5-carboxylate Chemical group CCOC(=O)C1=CC=C2N=[Se]=NC2=C1 PUSKHXMZPOMNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004759 spandex Substances 0.000 claims description 3
- 229920002972 Acrylic fiber Polymers 0.000 claims description 2
- 229920004933 Terylene® Polymers 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 claims 1
- 239000004753 textile Substances 0.000 abstract description 5
- 239000002344 surface layer Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 description 28
- 238000002834 transmittance Methods 0.000 description 24
- 238000010998 test method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 230000006750 UV protection Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000037072 sun protection Effects 0.000 description 2
- 206010042496 Sunburn Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
- D06M2101/08—Esters or ethers of cellulose
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
Abstract
The application relates to the technical field of textile products, in particular to a preparation method of a sun-proof fabric, the sun-proof fabric and a sun-proof umbrella. The preparation method of the sun-proof fabric comprises the following steps: placing the fabric substrate into finishing liquid for padding, taking out the fabric substrate, standing the fabric substrate, and drying the fabric substrate, wherein the finishing liquid contains titanium dioxide powder, and the granularity of the titanium dioxide powder in the finishing liquid is not more than 70 nm; soaking the fabric substrate in a first coating and then drying the fabric substrate, wherein the first coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the first coating is 70-130 nm; and coating a second coating on the surface of the first coating on one side of the fabric substrate, wherein the second coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 130-300 nm. Reflection and scattering of ultraviolet rays are realized through large-particle titanium dioxide powder on the surface layer and the middle layer of the fabric, most of ultraviolet rays are blocked, and partial ultraviolet rays penetrating through the second coating and the first coating are absorbed through small-particle titanium dioxide attached to fibers of the internal fabric.
Description
Technical Field
The application relates to the technical field of textile products, in particular to a preparation method of a sun-proof fabric, the sun-proof fabric and a sun-proof umbrella.
Background
In order to achieve the sun-screening effect, the umbrella cloth in the prior art effectively reflects and absorbs ultraviolet rays, a sun-screening coating is usually coated on an umbrella cover, so that the umbrella cloth has good heat reflectivity, can maintain the proper temperature under a sun-screening umbrella under direct sunlight, enables a human body to feel comfortable, and has an ultraviolet-screening function and a good sun-screening effect. The coating cloth of the umbrella cover is mainly used, so that the sun-proof function of the cloth is added, the adverse effect caused by strong ultraviolet rays in the sun is avoided, and the sunburn is effectively avoided. The existing sun-proof umbrella cloth is usually formed by directly coating a sun-proof coating on the surface of the umbrella cloth and pressing, the blocking rate of ultraviolet rays is low, the sun-proof effect is not good, and the sun-proof coating is relatively complex in raw materials and relatively high in cost.
Disclosure of Invention
In order to solve the technical problem that the ultraviolet blocking efficiency of a sun-proof coating in the prior art is low, the invention firstly aims to provide a preparation method of a novel sun-proof fabric, so that the sun-proof fabric with better ultraviolet blocking effect compared with the prior art is formed.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a method for preparing a sunscreen fabric, comprising the steps of:
placing a fabric substrate into finishing liquid for padding, taking out, standing and drying, wherein the finishing liquid contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the finishing liquid is not more than 70 nm;
soaking a fabric substrate in a first coating, drying, and respectively forming first coatings on two sides of the fabric substrate, wherein the first coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the first coating is 70-130 nm;
and coating a second coating on the surface of the first coating on one side of the fabric substrate to form a second coating, wherein the second coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 130-300 nm.
Further, in the preparation method of the sun-proof fabric provided by the embodiment of the invention, the components of the finishing liquid comprise 30-70 parts by weight of alcohol, 20-50 parts by weight of ethyl acetate and 8-20 parts by weight of titanium dioxide powder.
Further, in the method for preparing the sun-blocking fabric according to the embodiment of the present invention, the components of the first dope or the second dope include 15 to 40 parts by weight of polyurethane, 35 to 60 parts by weight of N, N-dimethylformamide, and 10 to 25 parts by weight of titanium dioxide powder.
Further, in the preparation method of the sun-blocking fabric provided by the embodiment of the invention, the fabric base material is polyester, acetate fiber, nylon, acrylic fiber or spandex.
Further, in the preparation method of the sun-blocking fabric provided by the embodiment of the invention, the fabric base material is placed into the finishing liquid for padding for 15-50min at the temperature of 80 ℃, and the drying temperature of the fabric base material after the finishing liquid is taken out is 90 ℃.
Further, in the preparation method of the sun-blocking fabric provided by the embodiment of the invention, the finishing liquid is a suspension system formed by mixing alcohol, ethyl acetate and titanium dioxide powder in proportion and then stirring at a high speed.
Further, in the preparation method of the sun-blocking fabric provided by the embodiment of the invention, the polyester fabric substrate is dried in a gradient temperature rise manner in the drying process after being soaked in the first coating or the second coating.
In order to achieve the above object, according to a second aspect of the present invention, there is also provided a sunscreen fabric produced by the method for producing a sunscreen fabric according to the first aspect of the embodiments of the present invention.
Further, the sunscreen fabric provided by the embodiment of the invention comprises a first coating layer, a fabric substrate, the first coating layer and a second coating layer which are sequentially stacked, wherein titanium dioxide powder with the particle size of not more than 70nm is attached to fabric fibers of the fabric substrate, the titanium dioxide powder with the particle size of 70-130nm is distributed in the first coating layer, and the titanium dioxide powder with the particle size of 130-300nm is distributed in the second coating layer.
In order to achieve the above object, according to a third aspect of the present invention, there is also provided a sun protection umbrella made of the sun protection fabric according to the second aspect of the embodiment of the present invention.
The sun-proof fabric obtained by the preparation method of the sun-proof fabric contains titanium dioxide powder, and through the ordered arrangement of the particle sizes of the titanium dioxide powder, reflection and scattering of ultraviolet rays are realized through large-particle titanium dioxide powder on the surface layer and the middle layer of the fabric, most of ultraviolet rays are blocked, and partial ultraviolet rays penetrating through the second coating and the first coating are absorbed through small-particle titanium dioxide attached to fibers of the internal fabric, so that the interference influence between the large-particle titanium dioxide powder with strong shielding performance and the fine-particle titanium dioxide powder with strong absorption performance in the same coating is avoided, and the blocking efficiency of the ultraviolet rays is reduced.
Detailed Description
In order to make the technical solutions in the embodiments of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such article or apparatus. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a sun-proof fabric which comprises a first coating, a fabric substrate, the first coating and a second coating which are sequentially stacked, wherein titanium dioxide powder with the particle size of not more than 70nm is attached to fabric fibers of the fabric substrate, the titanium dioxide powder with the particle size of 70-130nm is distributed in the first coating, and the titanium dioxide powder with the particle size of 130-300nm is distributed in the second coating. When the ultraviolet shielding fabric is used, the second coating faces to one side irradiated by sunlight, through the second coating, the ordered arrangement of the particle sizes of the titanium dioxide powder in the first coating and the fabric substrate, the reflection and scattering of ultraviolet rays can be realized by the large-particle titanium dioxide powder in the outermost second coating and the middle-layer first coating of the fabric, most of ultraviolet rays are blocked, meanwhile, the titanium dioxide powder in the first coating can also realize certain absorption effect on the ultraviolet rays, the absorption of partial ultraviolet rays penetrating through the second coating and the first coating can be realized by the small-particle titanium dioxide attached to the fabric fibers of the fabric substrate, the interference influence between the large-particle titanium dioxide powder with strong shielding performance and the fine-particle titanium dioxide powder with strong absorption performance in the same coating is avoided, and the blocking efficiency of the ultraviolet rays is reduced. The first coating layer on the surface layer of the fabric is used for protecting the fabric substrate and preventing the loss of titanium dioxide powder on the surface of the fabric substrate in the using process, and when the fabric is used for sunshade umbrella and other products, the first coating layer on the surface layer of the fabric faces to the ground and can absorb a small amount of ultraviolet rays reflected by the ground.
The sun-proof fabric provided by the embodiment of the invention can be applied to manufacturing various products used outdoors or in high ultraviolet environments, including but not limited to sun-proof umbrellas, tents, protective clothing, sun-proof clothes, car covers, raincoats, cases and the like.
The sunscreen fabric provided by the embodiment of the invention can be prepared by the following method, and the preparation method comprises the following steps 1-3.
Step 1: the method comprises the following steps of padding a textile substrate in finishing liquid, taking out the textile substrate, standing and drying the textile substrate, wherein the finishing liquid contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the finishing liquid is not more than 70 nm. Specifically, the fabric base material is placed into the finishing liquid for padding for 15-50min, the temperature is 80 ℃, and the drying temperature of the fabric base material after the finishing liquid is taken out is 90 ℃. The finishing liquid comprises 30-70 parts by weight of alcohol, 20-50 parts by weight of ethyl acetate and 8-20 parts by weight of titanium dioxide powder, and a suspension system formed by mixing the components and stirring at a high speed is the finishing liquid. The fabric base material used in this step includes, but is not limited to, polyester, acetate, nylon, acrylic, and spandex.
Step 2: soaking a fabric substrate in a first coating, drying, and performing gradient heating in the drying process to form first coatings on two sides of the fabric substrate respectively, wherein the first coating contains titanium dioxide powder, the particle size of the titanium dioxide powder in the first coating is 70-130nm, and the first coating comprises 15-40 parts by weight of polyurethane, 35-60 parts by weight of N, N-dimethylformamide and 10-25 parts by weight of titanium dioxide powder.
And 3, coating a second coating on the surface of the first coating on one side of the fabric substrate to form a second coating, wherein the second coating comprises titanium dioxide powder, the particle size of the titanium dioxide powder in the second coating is 130-300nm, and the components of the second coating comprise 15-40 parts by weight of polyurethane, 35-60 parts by weight of N, N-dimethylformamide and 10-25 parts by weight of titanium dioxide powder.
In the above steps, in order to achieve other functional effects of the sun-blocking fabric, materials such as a water-proofing agent, an abrasion-resistant agent, a light stabilizer, and a pigment may be added to the first paint or the second paint to achieve functions such as water resistance, abrasion resistance, aging resistance, and color adjustment.
Example 1
A preparation method of a sun-proof fabric comprises the following steps.
Step 1: and (3) under the condition of 80 ℃, putting the clean polyester fabric base material into the finishing liquid for padding for 35min, then taking out, standing and drying at 90 ℃. The finishing liquid comprises 50 parts by weight of alcohol, 30 parts by weight of ethyl acetate and 23 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the finishing liquid is not more than 30nm, and the finishing liquid is a suspension system formed by mixing the alcohol, the ethyl acetate and the titanium dioxide powder in proportion and then stirring at a high speed. Through the comparison of the front and the back weighing, the mass percentage of the titanium dioxide powder on the polyester fiber is 21.3 percent.
Step 2: and (2) soaking the polyester fabric substrate prepared in the step (1) in the first coating for 1h, drying, and continuously drying at 75 ℃, 80 ℃, 85 ℃, 95 ℃ and 110 ℃ in sequence by adopting a gradient heating mode, wherein the temperature is kept for 15S at each temperature gradient. And respectively forming first coatings on two sides of the polyester fabric substrate after drying, wherein the thicknesses of the first coatings on the two sides are about 200 mu m. Wherein the first coating comprises the following components: 25 parts by weight of polyurethane, 50 parts by weight of N, N-dimethylformamide and 15 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the first coating being 80 to 120 nm.
And 3, step 3: and (3) coating a second coating on the surface of the first coating on one side of the polyester fabric substrate to form a second coating, compacting the polyester fabric by adopting a compacting roller in the drying process of the second coating, and then drying to obtain the sun-proof fabric, wherein the drying mode is the same as that in the step (2). The thickness of the obtained second coating was around 150 μm. The second coating comprises 20 parts by weight of polyurethane, 60 parts by weight of N, N-dimethylformamide and 20 parts by weight of titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 250-300 nm.
Referring to the test method of fabric ultraviolet transmittance of GB/T17032-1997, the side of the second coating layer facing the light source is arranged, the ultraviolet transmittance measured by the sunscreen fabric obtained in the step 3 is 2.31%, the sunscreen fabric has a good ultraviolet resistance function, the ultraviolet transmittance measured by the product obtained in the step 2 is 9.33%, and the ultraviolet transmittance measured by the product obtained in the step 1 is 26.78%.
Example 2
A preparation method of a sun-proof fabric comprises the following steps.
Step 1: and (3) under the condition of 80 ℃, putting the clean polyester fabric base material into the finishing liquid for padding for 35min, then taking out, standing and drying at 90 ℃. The finishing liquid comprises 50 parts by weight of alcohol, 30 parts by weight of ethyl acetate and 23 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the finishing liquid is 20-40nm, and the finishing liquid is a suspension system formed by mixing the alcohol, the ethyl acetate and the titanium dioxide powder in proportion and then stirring at a high speed. Through the comparison of the front and the back weighing, the mass percentage of the titanium dioxide powder on the polyester fiber is 23.7%.
Step 2: and (2) soaking the polyester fabric substrate prepared in the step (1) in the first coating for 1h, drying, and continuously drying at 75 ℃, 80 ℃, 85 ℃, 95 ℃ and 110 ℃ in sequence by adopting a gradient heating mode, wherein the temperature is kept for 15S at each temperature gradient. And respectively forming first coatings on two sides of the polyester fabric substrate after drying, wherein the thicknesses of the first coatings on the two sides are about 200 mu m. Wherein the first coating comprises the following components: 25 parts by weight of polyurethane, 50 parts by weight of N, N-dimethylformamide and 15 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the first coating being 80 to 120 nm.
And step 3: and (3) coating a second coating on the surface of the first coating on one side of the polyester fabric substrate to form a second coating, compacting the polyester fabric by using a compacting roller in the drying process of the second coating, and then drying to obtain the sun-proof fabric, wherein the drying mode is the same as that in the step 2. The thickness of the obtained second coating was around 150 μm. The second coating comprises 20 parts by weight of polyurethane, 60 parts by weight of N, N-dimethylformamide and 20 parts by weight of titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 150-250 nm.
Referring to the test method of ultraviolet transmittance of fabric in GB/T17032-1997, the side of the second coating facing the light source is arranged, the ultraviolet transmittance of the sunscreen fabric obtained in step 3 is 2.46%, the sunscreen fabric has a good ultraviolet resistance function, the ultraviolet transmittance of the product obtained in step 2 is 12.36%, and the ultraviolet transmittance of the product obtained in step 1 is 29.88%.
Example 3
A preparation method of a sun-proof fabric comprises the following steps.
Step 1: and (3) under the condition of 80 ℃, putting the clean polyester fabric base material into the finishing liquid for padding for 35min, then taking out, standing and drying at 90 ℃. The finishing liquid comprises 50 parts by weight of alcohol, 30 parts by weight of ethyl acetate and 17 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the finishing liquid is not more than 30nm, and the finishing liquid is a suspension system formed by mixing the alcohol, the ethyl acetate and the titanium dioxide powder in proportion and then stirring at a high speed. Through the comparison of the front and the back weighing, the mass percentage of the titanium dioxide powder on the polyester fiber is 18.6%.
Step 2: and (2) soaking the polyester fabric substrate prepared in the step (1) in the first coating for 1h, drying, and continuously drying at 75 ℃, 80 ℃, 85 ℃, 95 ℃ and 110 ℃ in sequence by adopting a gradient heating mode, wherein the temperature is kept for 15S at each temperature gradient. And respectively forming first coatings on two sides of the polyester fabric substrate after drying, wherein the thicknesses of the first coatings on the two sides are about 200 mu m. Wherein the first coating comprises the following components: 25 parts by weight of polyurethane, 50 parts by weight of N, N-dimethylformamide and 15 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the first coating being 80 to 120 nm.
And step 3: and (3) coating a second coating on the surface of the first coating on one side of the polyester fabric substrate to form a second coating, compacting the polyester fabric by using a compacting roller in the drying process of the second coating, and then drying to obtain the sun-proof fabric, wherein the drying mode is the same as that in the step 2. The thickness of the obtained second coating was around 150 μm. The second coating comprises 20 parts by weight of polyurethane, 60 parts by weight of N, N-dimethylformamide and 15 parts by weight of titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 180-270 nm.
Referring to the test method of fabric ultraviolet transmittance of GB/T17032-1997, the side of the second coating layer is arranged to face the light source, the ultraviolet transmittance measured by the sunscreen fabric obtained in the step 3 is 2.94%, the sunscreen fabric has a good ultraviolet resistance function, the ultraviolet transmittance measured by the product obtained in the step 2 is 10.48%, and the ultraviolet transmittance measured by the product obtained in the step 1 is 31.20%.
Example 4
A preparation method of a sun-proof fabric comprises the following steps.
Step 1: and (3) padding the clean acetate fiber fabric base material in finishing liquor for 25min at the temperature of 80 ℃, taking out, standing and drying. The finishing liquid comprises 35 parts by weight of alcohol, 40 parts by weight of ethyl acetate and 33 parts by weight of titanium dioxide powder, the particle size of the titanium dioxide powder in the finishing liquid is 10-70nm, and the finishing liquid is a suspension system formed by mixing the alcohol, the ethyl acetate and the titanium dioxide powder in proportion and then stirring at a high speed. The weight ratio of the titanium dioxide powder on the acetate fiber is 24.0 percent through the comparison of the front and the back weighing.
Step 2: and (2) soaking the acetate fiber fabric base material prepared in the step (1) in the first coating for 1h, drying, and continuously drying at 75 ℃, 80 ℃, 85 ℃, 95 ℃ and 110 ℃ in sequence by adopting a gradient heating mode, wherein the temperature is kept for 15S at each temperature gradient. And respectively forming first coatings on two sides of the acetate fabric substrate after drying, wherein the thicknesses of the first coatings on the two sides are about 200 mu m. Wherein the first coating comprises the following components: 34 parts of polyurethane, 50 parts of N, N-dimethylformamide and 10 parts of titanium dioxide powder, wherein the particle size of the titanium dioxide powder in the first coating is 100-130 nm.
And step 3: and (3) coating a second coating on the surface of the first coating on one side of the acetate fiber fabric substrate to form a second coating, compacting the acetate fiber fabric by adopting a compacting roller in the drying process of the second coating, and then drying to obtain the sun-proof fabric, wherein the drying mode is the same as that in the step 2. The thickness of the obtained second coating was around 150 μm. The second coating comprises 20 parts by weight of polyurethane, 55 parts by weight of N, N-dimethylformamide and 15 parts by weight of titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 150-200 nm.
Referring to the test method of fabric ultraviolet transmittance of GB/T17032-1997, the side of the second coating layer is arranged to face the light source, the ultraviolet transmittance measured by the sun-proof fabric obtained in the step 3 is 3.07%, the sun-proof fabric has a good ultraviolet resistance function, the ultraviolet transmittance measured by the product obtained in the step 2 is 8.35%, and the ultraviolet transmittance measured by the product obtained in the step 1 is 28.59%.
Comparative example 1
This comparative example produced a sun-blocking fabric through steps 2 and 3 in example 1, but did not include step 1 in example 1, i.e., the polyester fabric substrate was directly provided with the first and second coatings on its surface without padding with the finishing liquid.
With reference to the test method for ultraviolet transmittance of fabric of GB/T17032-1997, with the second coating facing the light source, the ultraviolet transmittance measured was 4.28%.
Comparative example 2
This comparative example produced a sun-blocking fabric through steps 1 and 3 in example 1, but did not include step 2 in example 1, i.e., the polyester fabric substrate obtained in step 1, and directly prepared a second coating layer on the surface thereof without preparing the first coating layer.
Referring to GB/T17032-1997, test methods for ultraviolet transmittance of fabrics, with the second coating facing the light source, the ultraviolet transmittance measured was 7.27%.
Comparative example 3
This comparative example produced a sun-blocking fabric through steps 1 and 2 in example 1, but did not include step 3 in example 1, i.e., no second coating was produced after the first coating was formed on the surface of the polyester fabric substrate.
With reference to the test method for the ultraviolet transmittance of fabrics in GB/T17032-1997, the ultraviolet transmittance measured is 9.33%.
Comparative example 4
A preparation method of a sun-proof fabric comprises the following steps.
Soaking the clean polyester fabric base material in the slurry for 1h, drying, and continuously drying at 75 ℃, 80 ℃, 85 ℃, 95 ℃ and 110 ℃ in sequence by adopting a gradient heating mode, wherein the temperature is kept for 15S at each temperature gradient. And respectively forming first coatings on two sides of the polyester fabric substrate after drying, wherein the thicknesses of the first coatings on the two sides are about 200 mu m. And then coating the sizing agent on the surface of the first coating on one side of the polyester fabric substrate to form a second coating, compacting the polyester fabric by adopting a compacting roller in the drying process of the second coating, and then drying to obtain the sun-proof fabric, wherein the drying mode is the same as that of the embodiment, and the thickness of the obtained second coating is about 150 mu m. The slurry comprises 25 parts by weight of polyurethane, 60 parts by weight of N, N-dimethylformamide, 5 parts by weight of titanium dioxide powder with the particle size of not more than 30nm, 10 parts by weight of titanium dioxide powder with the particle size of 80-120nm and 10 parts by weight of titanium dioxide powder with the particle size of 250-300 nm.
The ultraviolet transmittance measured by the test method for the ultraviolet transmittance of fabric according to GB/T17032-1997 is 6.21%.
Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A preparation method of a sun-proof fabric is characterized by comprising the following steps:
placing a fabric base material made of terylene, acetate fiber, nylon, acrylic fiber or spandex into finishing liquid for padding for 15-50min at the temperature of 80 ℃, taking out, standing and drying at the temperature of 90 ℃, wherein the components of the finishing liquid consist of 30-70 parts by weight of alcohol, 20-50 parts by weight of ethyl acetate and 8-20 parts by weight of titanium dioxide powder, and the particle size of the titanium dioxide powder in the finishing liquid is not more than 70 nm;
soaking a fabric substrate in a first coating, and drying by adopting a gradient heating mode, and respectively forming first coatings on two sides of the fabric substrate, wherein the first coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the first coating is 70-130 nm;
coating a second coating on the surface of the first coating on one side of the fabric substrate to form a second coating, wherein the second coating contains titanium dioxide powder, and the particle size of the titanium dioxide powder in the second coating is 130-300 nm;
the components of the first coating or the second coating consist of 15 to 40 parts by weight of polyurethane, 35 to 60 parts by weight of N, N-dimethylformamide and 10 to 25 parts by weight of titanium dioxide powder.
2. The method for preparing a sunscreen fabric according to claim 1, wherein the finishing liquid is a suspension system formed by mixing alcohol, ethyl acetate and titanium dioxide powder and then stirring at a high speed.
3. A sun-blocking fabric produced by the production method according to any one of claims 1 to 2.
4. The sun-blocking fabric as claimed in claim 3, wherein the sun-blocking fabric comprises a first coating layer, a fabric substrate, a first coating layer and a second coating layer which are sequentially stacked, wherein titanium dioxide powder with the particle size of not more than 70nm is attached to fabric fibers of the fabric substrate, titanium dioxide powder with the particle size of 70-130nm is distributed in the first coating layer, and titanium dioxide powder with the particle size of 130-300nm is distributed in the second coating layer.
5. A sun screen umbrella, characterized by being produced from the sun screen fabric according to claim 3 or 4.
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| CN109263216A (en) * | 2018-08-27 | 2019-01-25 | 上海骊塑商贸有限公司 | A kind of scattering energy saving film that self-adaptive temperature is adjusted |
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| TW577943B (en) * | 2002-05-17 | 2004-03-01 | Nanya Plastics Corp | Fiber with UV-shielding effect and fabric made from the same |
| TWI561251B (en) * | 2015-07-31 | 2016-12-11 | Univ Nat Tsing Hua | Sun protection composition and application the same |
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| CN109263216A (en) * | 2018-08-27 | 2019-01-25 | 上海骊塑商贸有限公司 | A kind of scattering energy saving film that self-adaptive temperature is adjusted |
| EP3819425A1 (en) * | 2019-11-06 | 2021-05-12 | Ningbo Radi-Cool Advanced Energy Technologies Co., Ltd. | Radiative cooling fabrics and products |
| CN110863343A (en) * | 2019-11-27 | 2020-03-06 | 浙江圣山科纺有限公司 | Environment-friendly ultraviolet-resistant finishing agent and outdoor cloth using same |
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