CN108755164B - Macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs and preparation method thereof - Google Patents

Macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs and preparation method thereof Download PDF

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CN108755164B
CN108755164B CN201810558991.3A CN201810558991A CN108755164B CN 108755164 B CN108755164 B CN 108755164B CN 201810558991 A CN201810558991 A CN 201810558991A CN 108755164 B CN108755164 B CN 108755164B
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latex
silver
titanium
nano
coating
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CN108755164A (en
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胡涛
廖云辉
廖义
黄伟
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Dongguan Luxiang Environmental Protection New Material Technology Co ltd
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Dongguan Luxiang Environmental Protection New Material Technology Co ltd
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    • 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
    • D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/10—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 by reactions only involving carbon-to-carbon unsaturated bonds with styrene-butadiene copolymerisation products or other synthetic rubbers or elastomers except polyurethanes
    • D06N3/106—Elastomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • 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
    • 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
    • D06M11/83—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 metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
    • 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
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • 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
    • 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
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/0054—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by mechanical perforations
    • 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
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • 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
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/02—Natural macromolecular compounds or derivatives thereof
    • D06N2203/022—Natural rubber
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1671—Resistance to bacteria, mildew, mould, fungi

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a high polymer latex foaming product for degrading formaldehyde and TVOC and inhibiting germs and a preparation method thereof, comprising the following steps: preparing a titanium silver spray, namely adding titanium dioxide and nano silver into water to prepare a titanium silver mixed solution; coating latex, namely coating the foamed latex on a carrier material on a conveyer belt; primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven; spraying a spray, namely spraying a titanium-silver mixed solution on the surface of the preliminarily baked latex which is not formed; and (3) baking and forming the product, namely conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven, and drying and forming the surface of the carrier material with an emulsion layer and a nano titanium-silver coating. The invention adopts the preparation method of latex coating, spray spraying and two-stage drying, can organically combine nano titanium dioxide and nano silver with latex foaming products, can degrade harmful substances such as formaldehyde, TVOC and the like, can inhibit pathogenic bacteria, and enriches the product application.

Description

Macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs and preparation method thereof
Technical Field
The invention relates to the technical field of latex foaming products, in particular to a high-molecular latex foaming product for degrading formaldehyde and Total Volatile Organic Compounds (TVOC) and inhibiting germs and a preparation method thereof.
Background
The latex material has the characteristics of high elasticity, good air permeability, environmental protection, pure nature, comfort, durability, absorption and shock absorption and the like, so the latex material is widely applied to various daily necessities, such as various latex foam products or articles, such as sofa mattresses, pillows, mouse pads, seat cushions, lady underwear and the like, but the existing latex foam products or articles have single functions and do not have the functions of degrading formaldehyde and TVOC and inhibiting germs.
Researches show that the nano-scale titanium dioxide can oxidize and decompose harmful substances such as formaldehyde, toluene and the like into carbon dioxide, water and organic acid under the condition of light or water, the existence of the nano-silver can enhance the photocatalytic performance of the nano-scale titanium dioxide, and on the other hand, the nano-silver slowly releases Ag+Can destroy the bacterial cell membrane or strongly attract the sulfhydryl of enzyme protein in the bacterial body and rapidly combine together, reduces the activity of the original biological active enzyme, has strong bactericidal property, and is not influenced by external light and water. Therefore, the nano-titanium dioxide and the nano-silver have been applied to paints or decorative coatings such as emulsion paints, but the nano-titanium dioxide and the nano-silver have not been applied to the existing emulsion foam products or articles (such as aldehyde-removing odor-removing sheets, sofa mattresses, pillows, mouse pads, automobile seat cushions, etc.), and the production method of combining the nano-titanium dioxide and the nano-silver with the emulsion foam products in the production process of the emulsion foam products has not been disclosed.
In response to the increasing demand of the market for multiple functions of latex foam products, there is a need to develop a polymer latex foam product or article which can degrade formaldehyde and TVOC and inhibit pathogens.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a high-molecular latex foaming product capable of degrading formaldehyde and TVOC and inhibiting germs and a preparation method thereof.
In order to achieve the above object, a first aspect of the present invention provides a method for preparing a polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs, comprising the following steps:
step one, preparing a titanium silver spray, namely adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness;
step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled to be 80-90 ℃, and the baking time is 8-15 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and fifthly, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with a latex layer and a nano titanium-silver coating connected to the surface of the latex layer, wherein the baking temperature of the second oven is controlled to be 60-80 ℃, and the baking time is 8-15 minutes.
In a preferred embodiment, in the above method, the titanium-silver mixed solution sprayed per square meter contains 0.1-20 g of titanium dioxide, 0.05-5 g of nano-silver and 10-100 times of water.
In a preferred embodiment, in the first step, the stirring speed is 40 to 400 rpm, the stirring time is 5 to 30 minutes, and the temperature is normal temperature.
In a preferred embodiment, in the above method, the latex includes natural latex, styrene-butadiene latex, chloroprene latex, acrylonitrile-butadiene latex, or a combination thereof.
In a preferred embodiment, in the above method, the latex foaming method is a mechanical foaming method.
In a preferable embodiment, in the technical scheme of the method, the spraying amount of the spray head is adaptively adjusted according to the conveying speed of the conveying belt, and the conveying speed of the conveying belt is 2-40 m/min.
The second aspect of the invention provides a high molecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs, which comprises the following layer structure:
a carrier material layer;
the emulsion layer is prepared by coating latex on the surface of the carrier material layer and drying;
the nano titanium-silver coating is prepared by spraying a titanium-silver mixed solution on the surface of the latex layer and drying the latex layer together;
the titanium-silver mixed solution is prepared by adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring.
In a preferred embodiment, in the above technical scheme of the polymer latex foam product, the content of titanium dioxide in the titanium-silver mixed solution sprayed per square meter is 0.1-20 g, the content of nano-silver is 0.05-5 g, and the content of water is 10-100 times of the total amount of the titanium dioxide and the nano-silver.
In a preferred embodiment, in the above-mentioned technical solution of the polymer latex foam product, the carrier material layer is provided as a cloth, and the latex in the latex layer includes natural latex, styrene-butadiene latex, neoprene latex, nitrile latex, or a combination thereof.
In a preferred embodiment, in the above technical solution of the polymer latex foam product, the thickness of the carrier material layer is 0.1 to 1 mm, the thickness of the latex layer is 1 to 10 mm, and the thickness of the nano titanium-silver coating is 5 to 200 nm.
Compared with the prior art, the invention has the advantages that,
the preparation method disclosed by the invention is reasonable in design, the method of latex coating and spray spraying is adopted, the nano titanium dioxide, the nano silver and the latex foaming product can be organically combined together, the production is convenient, the product quality is good, the productivity is high, two-stage drying is adopted, the titanium-silver mixed solution can be dried and formed together with the latex layer after being sprayed on the surface of the latex layer, glue adhesion is not needed between layers, the environment is protected, the prepared product can degrade harmful substances and gases such as formaldehyde and TVOC, the air purification function is realized, germs can be inhibited and killed, the application range of the latex foaming product is enriched, and the application range of the latex foaming product is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for preparing a polymer latex foam product according to an embodiment of the present invention;
FIG. 2 is a schematic view of a production line for preparing a polymer latex foamed product according to an embodiment of the present invention;
FIG. 3 is a layer structure diagram of a polymer latex foam product according to an embodiment of the present invention;
FIG. 4 is a graph of decontamination efficiency versus time T (h) for a test chamber provided in accordance with an embodiment of the present invention;
FIG. 5 shows the nominal formaldehyde concentrations (mg/m) of the comparative chamber and the sample chamber provided in the examples of the present invention3) -time t (h) graph;
FIG. 6 shows the nominal formaldehyde concentrations (mg/m) of the comparative chamber and the sample chamber provided in the examples of the present invention3) Time T (h) histogram.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
Referring to fig. 1 and 2, the present invention provides a method for preparing a polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs, comprising the following steps:
step one, preparing a titanium silver spray, namely adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness (such as 1-10 mm) of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness;
step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled to be 80-90 ℃, and the baking time is 8-15 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and fifthly, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with a latex layer and a nano titanium-silver coating connected to the surface of the latex layer, wherein the baking temperature of the second oven is controlled to be 60-80 ℃, and the baking time is 8-15 minutes.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 0.1-20 g, the content of nano-silver is 0.05-5 g, and the content of water is 10-100 times of the total amount of the titanium dioxide and the nano-silver.
In the first step, the stirring speed is 40-400 rpm, the stirring time is 5-30 minutes, and the temperature is normal temperature.
In particular embodiments, the latex may include natural latex, styrene-butadiene latex, neoprene latex, nitrile latex, or combinations thereof, although other types of latex may be used.
In specific implementation, the latex foaming method can preferably adopt a mechanical foaming method, and other foaming methods can also be adopted according to actual needs.
The shower nozzle is located between two ovens, and in the preparation process, the volume that the shower nozzle sprayed can carry out adaptability according to the speed of the conveying speed of conveyer belt, the conveying speed of conveyer belt is 2 ~ 40 meters/minute.
As shown in FIG. 3, the present invention provides a polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs, which comprises the following layer structure:
a carrier material layer 1;
the emulsion layer 2 is formed by coating emulsion on the surface of the carrier material layer 1 and drying;
the nano titanium silver coating 3 is prepared by spraying a titanium silver mixed solution on the surface of the latex layer 2 and drying the latex layer 2 together;
the titanium-silver mixed solution is prepared by adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 0.1-20 g, the content of nano-silver is 0.05-5 g, and the content of water is 10-100 times of the total amount of the titanium dioxide and the nano-silver.
The carrier material layer 1 may be preferably configured as a cloth, of course, other materials are used, and the latex in the latex layer 2 includes natural latex, styrene-butadiene latex, neoprene latex, nitrile latex, or a combination thereof.
The thickness of the carrier material layer 1 is 0.1-1 mm, the thickness of the emulsion layer 2 is 1-10 mm, and the thickness of the nano titanium silver coating 3 is 5-200 nm.
The nano-scale titanium dioxide can oxidize and decompose harmful substances such as formaldehyde, toluene, TVOC and the like into carbon dioxide, water and organic acid under the condition of light or water, and after the nano-scale titanium dioxide is sprayed on the surface of latex to form a purification coating, the latex has the function of purifying air, is beneficial to human health and improves the respiratory system of a human body. However, the nano-titanium dioxide has antibacterial property and air purification performance only under the condition of light or water, which limits the application of the nano-titanium dioxide in dark areas or dry areas, but the existence of the nano-silver can enhance the photocatalytic performance of the nano-titanium dioxide,on the other hand, Ag released slowly from nano-silver+Can destroy the bacterial cell membrane or strongly attract the sulfhydryl of enzyme protein in the bacterial body and rapidly combine together, reduces the activity of the original biological active enzyme, has strong bactericidal property, and is not influenced by external light and water. Therefore, the nanometer titanium dioxide and the nanometer silver are combined, so that the antibacterial property of the high polymer latex foam product can be further enhanced, the high polymer latex foam product has good antibacterial property no matter in a dark area or a dry area, and the application range of the high polymer latex foam product is greatly expanded.
Example 1
The embodiment 1 of the invention provides a high polymer latex foaming product for degrading formaldehyde and TVOC and inhibiting germs, which comprises the following layer structures arranged in sequence: the coating comprises a carrier material layer, a latex layer and a nano titanium silver coating, wherein the thickness of the carrier material layer is 0.1 mm, the thickness of the latex layer is 1 mm, and the thickness of the nano titanium silver coating is 5 nm.
A preparation method of a macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs comprises the following steps:
step one, preparing a titanium silver spray, namely adding 5 nm titanium dioxide and 5 nm nano silver into 10 times of water, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness
Step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled at 80 ℃, and the baking time is 8 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and fifthly, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with an emulsion layer and a nano titanium-silver coating connected to the surface of the emulsion layer, wherein the baking temperature of the second oven is controlled at 60 ℃, and the baking time is 8 minutes.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 0.1g, the content of nano-silver is 0.05g, and the content of water is 10 times of the total amount of the titanium dioxide and the nano-silver. In the first step, the stirring speed is 40 rpm, the stirring time is 5 minutes, and the temperature is normal temperature. The conveying speed of the conveying belt is 2 m/min.
Example 2
The embodiment 2 of the invention provides a high polymer latex foaming product for degrading formaldehyde and TVOC and inhibiting germs, which comprises the following layer structures arranged in sequence: the coating comprises a carrier material layer, a latex layer and a nano titanium silver coating, wherein the thickness of the carrier material layer is 0.5 mm, the thickness of the latex layer is 4 mm, and the thickness of the nano titanium silver coating is 60 nm.
A preparation method of a macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs comprises the following steps:
step one, preparing a titanium silver spray, namely adding 10 nm titanium dioxide and 40 nm nano silver into 40 times of water, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness
Step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled at 85 ℃, and the baking time is 10 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and step five, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with an emulsion layer and a nano titanium-silver coating connected to the surface of the emulsion layer, wherein the baking temperature of the second oven is controlled at 70 ℃, and the baking time is 10 minutes.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 1g, the content of nano-silver is 0.2g, and the content of water is 40 times of the total amount of the titanium dioxide and the nano-silver. In the first step, the stirring speed is 200 rpm, the stirring time is 10 minutes, and the temperature is normal temperature. The conveying speed of the conveying belt is 10 m/min.
Example 3
Embodiment 3 of the present invention provides a polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs, comprising the following layer structures arranged in sequence: the coating comprises a carrier material layer, a latex layer and a nano titanium silver coating, wherein the thickness of the carrier material layer is 0.8 mm, the thickness of the latex layer is 7 mm, and the thickness of the nano titanium silver coating is 100 nm.
A preparation method of a macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs comprises the following steps:
step one, preparing a titanium silver spray, namely adding 30 nm of titanium dioxide and 60 nm of nano silver into 80 times of water, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness
Step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled at 90 ℃, and the baking time is 10 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and step five, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with an emulsion layer and a nano titanium-silver coating connected to the surface of the emulsion layer, wherein the baking temperature of the second oven is controlled at 80 ℃, and the baking time is 10 minutes.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 10g, the content of nano-silver is 3g, and the content of water is 80 times of the total amount of the titanium dioxide and the nano-silver. In the first step, the stirring speed is 300 rpm, the stirring time is 20 minutes, and the temperature is normal temperature. The conveying speed of the conveying belt is 30 m/min.
Example 4
Embodiment 4 of the present invention provides a polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs, comprising the following layer structures arranged in sequence: the coating comprises a carrier material layer, a latex layer and a nano titanium-silver coating, wherein the thickness of the carrier material layer is 1 mm, the thickness of the latex layer is 10 mm, and the thickness of the nano titanium-silver coating is 200 nm.
A preparation method of a macromolecular latex foaming product for degrading formaldehyde and TVOC and inhibiting germs comprises the following steps:
step one, preparing a titanium silver spray, namely adding 50 nanometers of titanium dioxide and 100 nanometers of nano silver into 100 times of water, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness
Step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled at 90 ℃, and the baking time is 10 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and step five, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with an emulsion layer and a nano titanium-silver coating connected to the surface of the emulsion layer, wherein the baking temperature of the second oven is controlled at 80 ℃, and the baking time is 10 minutes.
In the titanium-silver mixed solution sprayed per square meter, the content of titanium dioxide is 20g, the content of nano-silver is 5g, and the content of water is 100 times of the total amount of the titanium dioxide and the nano-silver. In the first step, the stirring speed is 400 rpm, the stirring time is 30 minutes, and the temperature is normal temperature. The conveying speed of the conveying belt is 40 m/min.
According to JC/T1074-.
It should be noted that the polymer latex foam product of the present invention can be applied to an aldehyde-removing odor-removing sheet, a seat pad, a mouse pad, office supplies, automobile supplies or other sheet-like living goods.
In conclusion, the preparation method disclosed by the invention is reasonable in design, the nano titanium dioxide and nano silver can be organically combined with the latex foaming product by adopting the latex coating and spray spraying methods, the production is convenient, the product quality is good, the productivity is high, the titanium-silver mixed solution can be dried and formed together with the latex layer after being sprayed on the surface of the latex layer by adopting two-stage drying, glue adhesion is not needed between the layers, the environment is protected, the prepared product can degrade harmful substances and gases such as formaldehyde and TVOC, has an air purification function, can inhibit and kill germs, enriches the application range of the latex foaming product, and expands the application range of the latex foaming product.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. A preparation method of a high polymer latex foaming product for degrading formaldehyde and TVOC and inhibiting germs is characterized by comprising the following steps:
step one, preparing a titanium silver spray, namely adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring to prepare a titanium silver mixed solution;
step two, latex coating, namely uniformly spreading the foamed latex at a coating knife opening of a coating machine, and adjusting the height of the coating knife and the conveying speed of a conveying belt according to the required thickness of the latex so as to uniformly coat the foamed latex on carrier materials on the conveying belt according to the required thickness;
step three, primarily baking latex, namely conveying the carrier material coated with the latex on the surface into a first oven through a conveying belt, wherein the baking temperature of the first oven is controlled to be 80-90 ℃, and the baking time is 8-15 minutes;
step four, spraying by using a spray, namely uniformly spraying the titanium-silver mixed solution prepared in the step one on the surface of the preliminarily baked and unformed latex on the conveyer belt through a spray head;
and fifthly, baking and forming the product, continuously conveying the carrier material sprayed with the titanium-silver mixed solution into a second oven through a conveying belt, so that the surface of the carrier material is dried and formed with a latex layer and a nano titanium-silver coating connected to the surface of the latex layer, wherein the baking temperature of the second oven is controlled to be 60-80 ℃, and the baking time is 8-15 minutes.
2. The method for preparing a polymer latex foam product capable of degrading formaldehyde and TVOC and inhibiting bacteria according to claim 1, wherein the titanium dioxide content is 0.1-20 g, the nano-silver content is 0.05-5 g, and the water content is 10-100 times of the total amount of the titanium dioxide and the nano-silver in each square meter of the sprayed titanium-silver mixed solution.
3. The method for preparing a polymer latex foam product capable of degrading formaldehyde and TVOC and inhibiting bacteria according to claim 1, wherein in the first step, the stirring speed is 40-400 rpm, the stirring time is 5-30 minutes, and the temperature is room temperature.
4. The method as claimed in claim 1, wherein the latex comprises natural latex, butylbenzene latex, neoprene latex, butyronitrile latex, or a combination thereof.
5. The method as claimed in claim 1, wherein the latex foaming process is a mechanical foaming process.
6. The method for preparing a polymer latex foam product capable of degrading formaldehyde and TVOC and inhibiting bacteria according to claim 1, wherein the spraying amount of the spray head is adaptively adjusted according to the conveying speed of a conveying belt, and the conveying speed of the conveying belt is 2-40 m/min.
7. A macromolecule latex foaming product for degrading formaldehyde and TVOC and inhibiting germs is characterized by comprising the following layer structure:
a carrier material layer;
the emulsion layer is prepared by coating latex on the surface of the carrier material layer and drying;
the nano titanium-silver coating is prepared by spraying a titanium-silver mixed solution on the surface of the latex layer and drying the latex layer together;
the titanium-silver mixed solution is prepared by adding 5-50 nm titanium dioxide and 5-100 nm nano silver into 10-100 times of water of the total amount of the titanium dioxide and the nano silver, and uniformly stirring.
8. The polymer latex foam product for degrading formaldehyde and TVOC and inhibiting germs as claimed in claim 7, wherein the titanium dioxide content is 0.1-20 g, the nano-silver content is 0.05-5 g, and the water content is 10-100 times of the total amount of the titanium dioxide and the nano-silver in each square meter of sprayed titanium-silver mixed solution.
9. The polymer latex foam product for degrading formaldehyde and TVOC and inhibiting bacteria according to claim 7, wherein the carrier material layer is a cloth, and the latex in the latex layer comprises natural latex, styrene butadiene latex, neoprene latex, nitrile latex or a combination thereof.
10. The polymer latex foam product for degrading formaldehyde and TVOC and inhibiting bacteria according to claim 7, wherein the thickness of the carrier material layer is 0.1-1 mm, the thickness of the latex layer is 1-10 mm, and the thickness of the nano titanium-silver coating is 5-200 nm.
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CN1565195A (en) * 2003-06-10 2005-01-19 香港理工大学 Multifunctional broad spectrum nanometer antibiotic material and its preparation method
CN103497390A (en) * 2013-09-03 2014-01-08 东莞市铨兴鞋材有限公司 Nano-grade latex

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CN1565195A (en) * 2003-06-10 2005-01-19 香港理工大学 Multifunctional broad spectrum nanometer antibiotic material and its preparation method
CN103497390A (en) * 2013-09-03 2014-01-08 东莞市铨兴鞋材有限公司 Nano-grade latex

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