CN101759999A - Slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method and application method thereof - Google Patents
Slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method and application method thereof Download PDFInfo
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- CN101759999A CN101759999A CN200910247028A CN200910247028A CN101759999A CN 101759999 A CN101759999 A CN 101759999A CN 200910247028 A CN200910247028 A CN 200910247028A CN 200910247028 A CN200910247028 A CN 200910247028A CN 101759999 A CN101759999 A CN 101759999A
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Abstract
The invention provides a slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method, and provides a preparation method for the slurry. The slurry has low cost, good effect, safety, environmental protection, no toxic and side effects. The invention also provides the preparation method for using the slurry of water-borne polyurethane to produce synthetic leather by the replace the wet method and a prepared synthetic leather bass product. The preparation method for producing synthetic leather by the replace the wet method is simple and reliable, has no hazardous and noxious gas emission in the manufacturing process, and can realize clean production and safety production. The synthetic leather base prepared by the waterborne polyurethane has high property of simulating the derma and good ventilation property, has no toxic and residue odor, fully corresponds to relevant national standards, and has low cost and strong market competitiveness.
Description
Technical field
The present invention relates to the synthetic leather field, be specifically related to a kind of slurry, its preparation method of aqueous polyurethane of alternative wet production use for synthetic leather and utilize the preparation method and the resulting synthetic leather bass product of the slurry wet production synthetic leather of aqueous polyurethane of the present invention.
Background technology
The PU synthetic leather results from 20th century late nineteen seventies, develops in the nineties in 20th century.During traditional PU synthetic leather was produced, the PU resin that all adopts organic solvent was as basic unit and the surface layer of producing the leather product, and such PU resin is all with toluene, dimethylbenzene, acetone, butanone (MEK), acetate
Ethyl ester and dimethyl formamide (DMF) etc. make by polymerization as primary solvent.These solvents, toxic side effect is big, not only causes environmental pollution, and direct labor's health is caused huge injury, endanger healthy, and inflammable and explosive, very easily industrial accident such as initiation fire.It is reported, developed country alleviates the pollution of wet method PU chemical leather production to environment, carried out and used of the research of polyurethane leather use resin as substitute, PU makes and develops towards PU dispersion liquid, PU water miscible liquid direction, product applications is constantly widened, and develops into other special application fields such as clothes, ball, decoration with, case and bag field from the footwear of beginning.Therefore, exploitation Wet-type polyurethane leather use production of resins technology not only can solve environmental pollution, and helps the variation of product, and market outlook are very good.
The synthetic leather that uses waterborne polyurethane resin to make not only has the emulation skin and the air permeability and good of height, aqueous polyurethane with the leather base fabric course of processing in can form surfacing, the uniform wet method layer of abscess, and the universal performance requirement of tool synthetic leather, and can avoid the use of solvent, in process of manufacture, there is not the toxic and harmful discharging, realize cleaner production and safety in production, reach the nontoxic full feature of environmental protection and high physical and chemical performance, its social benefit and economic benefit are very remarkable.
Summary of the invention
The object of the present invention is to provide that a kind of cost is low, effective, safety and environmental protection, the slurry of the aqueous polyurethane that the alternative wet-method synthetic leather that has no side effect is used, and the preparation method of this slurry is provided.Another object of the present invention provides a kind of simple and reliable, there is not the toxic and harmful discharging in the process of manufacture, cleaner production and safety in production be can realize, and the preparation method of aqueous polyurethane slurry of alternative wet-method synthetic leather of the present invention and the synthetic leather bass product that obtains utilized.
Bass is the transliteration of English BASS, and its connotation is the meaning of base material (work in-process leather), and bass after technologies such as ornamenting such as surface printing, embossing, mill skin, just can become final synthetic leather finished product through dry method veneer or surface.
Main technical schemes of the present invention is:
The slurry of aqueous polyurethane is characterized in that comprising the component of following weight proportion: 80～130 parts of aqueous polyurethanes; 5～10 parts of suds-stabilizing agents; 0.1～0.6 part of linking agent; 5～10 parts of kaolin; 3～8 parts of pulp powders; 2～5 parts of thickening materials.
Aqueous polyurethane of the present invention adopts and contains two keys, the good aliphatic polyurethane of snappiness and/or aromatic urethane in the molecule, and described aliphatic polyurethane is non-xanthochromia prepolymer.Described aromatic urethane is not anti-xanthochromia.Two classes all can be used for preparing slurry.Two classes both can be used alone, but also also mix together.Can select dissimilar urethane according to the requirement of product; Preferred version is to use separately, and its reason is: mixing the result who uses and being not only increases cost but also anti-xanthochromia effect is reduced even to not having.
The preparation method of the slurry of above-mentioned aqueous polyurethane, it is characterized in that: in container, add aqueous polyurethane and continuously stirring, add kaolin, pulp powder more successively, high-speed stirring 10～30 minutes, kaolin and pulp powder are well-dispersed in the aqueous polyurethane, then add suds-stabilizing agent, surely steeped 10～45 minutes, add linking agent then and stir, add the viscosity that thickening material is adjusted to needs again.
The agitator of described stirring is the stainless steel metal agitator, and described being stirred under normal temperature, the normal pressure carried out.
Described container is the stainless steel cask after plastics or the polishing.
Utilize the preparation method of the slurry production synthetic leather bass of above-mentioned aqueous polyurethane, it is characterized in that may further comprise the steps:
(1) the certain density base cloth treatment agent of preparation; Described base cloth treatment agent is made up of peptizer and deionized water, and its weight proportion is: 0.5～3 part in peptizer, 80～200 parts of deionized waters;
(2) with base cloth in the base cloth treatment agent fully wetting after, press dry, in 60 ℃～130 ℃ baking oven, dry again;
(3) base cloth is put in waits on the coating machine to be coated with;
(4) with the prepared slurry blade coating on above-mentioned base cloth; The preparation method of described slurry is: add aqueous polyurethane and continuously stirring in container, add kaolin, pulp powder more successively, high-speed stirring 10～30 minutes, kaolin and pulp powder are well-dispersed in the aqueous polyurethane, then add suds-stabilizing agent, steady bubble 10～45 minutes adds linking agent then and stirs, and adds the viscosity that thickening material is adjusted to needs again;
(5) base cloth that will scribble slurry is dried in 80 ℃～140 ℃ baking oven, obtains work in-process;
(6) with the work in-process process washing again that obtains, wash the base cloth treatment agent off, obtain the synthetic leather finished product.
The synthetic leather bass that the preparation method who utilizes the aqueous polyurethane slurry to produce synthetic leather makes.
The cost of sizing agent of aqueous polyurethane of the present invention is low, effective, safety and environmental protection, have no side effect, the preparation method that the slurry that utilizes aqueous polyurethane of the present invention is produced the synthetic leather bass is simple and reliable, no toxic and harmful discharging in the process of manufacture, can realize cleaner production and safety in production, the synthetic leather product that makes not only has the emulation skin and the air permeability and good of height, nontoxicity and noresidue smell, meet the relevant national standards regulation fully, and its production cost is low, have the stronger market competitiveness, its social benefit and economic benefit are very remarkable.
Embodiment
Embodiment 1
With solid content is 35%, and modulus is 80kg/cm
2Aqueous polyurethane 90 weight parts, under condition of stirring, in plastic tank, add kaolin 8 weight parts successively, pulp powder 5 weight parts, high-speed stirring 15 minutes is well-dispersed in the aqueous polyurethane kaolin and pulp powder.Add suds-stabilizing agent 6 weight parts, surely steeped 15 minutes, add 0.2 weight part linking agent then and stir.Add thickening material 2 weight parts again, being adjusted to viscosity is 4000cps, and outward appearance is faint yellow emulsion.
The employed agitator of present embodiment is the agitator of stainless steel metal.Being stirred under normal temperature, the normal pressure of present embodiment carried out.
Embodiment 2
With solid content is 35%, and modulus is 200kg/cm
2Aqueous polyurethane 120 weight parts, under condition of stirring, add kaolin 12 weight parts in the stainless steel cask after polishing successively, pulp powder 5 weight parts, high-speed stirring 30 minutes is well-dispersed in the aqueous polyurethane kaolin and pulp powder.Add suds-stabilizing agent 6 weight parts, surely steeped 10 minutes, add 0.4 weight part linking agent then and stir.Add thickening material 3.5 weight parts again, being adjusted to viscosity is 5500cps, and outward appearance is faint yellow emulsion.
The employed agitator of present embodiment is the agitator of stainless steel metal.Being stirred under normal temperature, the normal pressure of present embodiment carried out.
Embodiment 3
With solid content is 30%, and modulus is 30kg/cm
2Aqueous polyurethane 100 weight parts, under condition of stirring, add kaolin 10 weight parts in the stainless steel cask after polishing successively, pulp powder 6 weight parts, high-speed stirring 20 minutes is well-dispersed in the aqueous polyurethane kaolin and pulp powder.Add suds-stabilizing agent 7 weight parts, surely steeped 20 minutes, add 0.3 weight part linking agent then and stir.Add thickening material 3 weight parts again, being adjusted to viscosity is 4500cps, and outward appearance is faint yellow emulsion.
The employed agitator of present embodiment is the agitator of stainless steel metal.Being stirred under normal temperature, the normal pressure of present embodiment carried out.
Embodiment 4
With solid content is 32%, and modulus is 100kg/cm
2Aqueous polyurethane 110 weight parts, under condition of stirring, in plastic tank, add kaolin 11 weight parts successively, pulp powder 6.5 weight parts, high-speed stirring 30 minutes is well-dispersed in the aqueous polyurethane kaolin and pulp powder.Add suds-stabilizing agent 7.5 weight parts, surely steeped 25 minutes, add 0.3 weight part linking agent then and stir.Add thickening material 4 weight parts again, being adjusted to viscosity is 5000cps, and outward appearance is faint yellow emulsion.
The employed agitator of present embodiment is the agitator of stainless steel metal.Being stirred under normal temperature, the normal pressure of present embodiment carried out.
Embodiment 5
With solid content is 35%, and modulus is 150kg/cm
2Add kaolin 15 weight parts in aqueous polyurethane 150 weight parts, the stainless steel cask under condition of stirring, after polishing successively, pulp powder 5 weight parts, high-speed stirring 30 minutes is well-dispersed in the aqueous polyurethane kaolin and pulp powder.Add suds-stabilizing agent 8 weight parts, surely steeped 45 minutes, add 0.5 weight part linking agent then and stir.Add thickening material 5 weight parts again, being adjusted to viscosity is 6000cps, and outward appearance is faint yellow emulsion.
The employed agitator of present embodiment is the agitator of stainless steel metal.Being stirred under normal temperature, the normal pressure of present embodiment carried out.
Comprehensive the foregoing description, the slurry of the aqueous polyurethane for preparing is as shown in table 1 below:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Aqueous polyurethane | ??90 | ??120 | ??100 | ??110 | ??150 |
| Kaolin | ??8 | ??12 | ??10 | ??11 | ??15 |
| Pulp powder | ??5.0 | ??5.0 | ??6.0 | ??6.5 | ??5.0 |
| Suds-stabilizing agent | ??6.0 | ??6.0 | ??7.0 | ??7.5 | ??8.0 |
| Linking agent | ??0.2 | ??0.4 | ??0.3 | ??0.3 | ??0.5 |
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Thickening material | ??2.0 | ??3.5 | ??3.0 | ??4.0 | ??5.0 |
| The slurry viscosity | ??4000cps | ??5500cps | ??4500cps | ??5000cps | ??6000cps |
| Appearance characteristics | Faint yellow emulsion | Faint yellow emulsion | Faint yellow emulsion | Faint yellow emulsion | Faint yellow emulsion |
The aqueous polyurethane that uses among the embodiment 1-5 is the aqueous polyurethane product of our company.Aqueous polyurethane also can be common aqueous polyurethane market product.
With the weight proportion preparation of peptizer and deionized water according to embodiment 6-10 as shown in table 2 below
The base cloth treatment agent:
Table 2
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | |
| Peptizer (weight part) | ??0.5 | ??2.0 | ??1.5 | ??1.0 | ??3.0 |
| Deionized water (weight part) | ??80 | ??160 | ??130 | ??100 | ??200 |
The suds-stabilizing agent that uses among the embodiment 1-10, kaolin, pulp powder, linking agent, peptizer, deionized water are common market product.It is special-purpose that described suds-stabilizing agent, linking agent, thickening material are aqueous polyurethane institute.
Utilize the slurry of the aqueous polyurethane that obtains as above-mentioned embodiment 1-5 and, further produce the synthetic leather bass as the base cloth treatment agent that embodiment 6-10 obtains:
At first with base cloth in the base cloth treatment agent for preparing fully wetting after, press dry, in baking oven, dry again, the bake out temperature of this step can be 60 ℃～130 ℃;
Then base cloth is put in and waits on the coating machine to be coated with;
Again with the prepared slurry blade coating on above-mentioned base cloth;
The base cloth that will scribble slurry is more then dried in baking oven, obtains work in-process, and the bake out temperature of this step can be 80 ℃～140 ℃;
With the work in-process process washing again that obtains, wash the base cloth treatment agent off at last, obtain finished product.
The synthetic leather bass that utilizes method for preparing to obtain has the emulation skin and the air permeability and good of height, aqueous polyurethane with the leather base fabric course of processing in can form surfacing, the uniform wet method layer of abscess, satisfy the universal performance requirement of synthetic leather, no toxic and harmful discharging in the process of manufacture, synthetic leather bass product nontoxicity, noresidue smell.
Above-mentionedly only the specific embodiment among the present invention is illustrated; but be not that protection scope of the present invention is done any pro forma qualification; every equivalence of being made according to the design spirit among the present invention changes or modifies, and all should think to fall into protection scope of the present invention.
Claims (8)
1. the slurry of aqueous polyurethane is characterized in that comprising the component of following weight proportion: 80～130 parts of aqueous polyurethanes; 5～10 parts of suds-stabilizing agents; 0.1～0.6 part of linking agent; 5～10 parts of kaolin; 3～8 parts of pulp powders; 2～5 parts of thickening materials.
2. the slurry of aqueous polyurethane according to claim 1, it is characterized in that: described aqueous polyurethane is aliphatic polyurethane and/or aromatic urethane.
3. the slurry of aqueous polyurethane according to claim 2 is characterized in that: it is special-purpose that described suds-stabilizing agent, linking agent, thickening material are aqueous polyurethane institute.
4. the preparation method of the slurry of each described aqueous polyurethane among the claim 1-3, it is characterized in that: in container, add aqueous polyurethane and continuously stirring, add kaolin, pulp powder more successively, with agitator high-speed stirring 10～30 minutes, kaolin and pulp powder are well-dispersed in the aqueous polyurethane, then add suds-stabilizing agent, surely steeped 10～45 minutes, add linking agent then and stir, add the viscosity that thickening material is adjusted to needs again.
5. the preparation method of the slurry of aqueous polyurethane according to claim 4, it is characterized in that: described agitator is the stainless steel metal agitator, described being stirred under normal temperature, the normal pressure carried out.
6. the preparation method of the slurry of aqueous polyurethane according to claim 5 is characterized in that: described container is the stainless steel cask after plastics or the polishing.
7. utilize the preparation method of the alternative wet production synthetic leather bass of slurry of each described aqueous polyurethane among the claim 1-3, it is characterized in that may further comprise the steps:
(1) the certain density base cloth treatment agent of preparation; Described base cloth treatment agent is made up of peptizer and deionized water, and its weight proportion is: 0.5～3 part in peptizer, 80～200 parts of deionized waters;
(2) with base cloth in the base cloth treatment agent fully wetting after, press dry, in 60 ℃～130 ℃ baking oven, dry again;
(3) base cloth is put in waits on the coating machine to be coated with;
(4) with the prepared slurry blade coating on above-mentioned base cloth; The preparation method of described slurry is: add aqueous polyurethane and continuously stirring in agitator, add kaolin, pulp powder more successively, high-speed stirring 10～30 minutes, kaolin and pulp powder are well-dispersed in the aqueous polyurethane, then add suds-stabilizing agent, steady bubble 10～45 minutes adds linking agent then and stirs, and adds the viscosity that thickening material is adjusted to needs again;
(5) base cloth that will scribble slurry is dried in 80 ℃～140 ℃ baking oven, obtains work in-process;
(6) with the work in-process process washing again that obtains, wash the base cloth treatment agent off, obtain synthetic leather bass product.
8. the synthetic leather bass that makes by the preparation method who utilizes the aqueous polyurethane slurry to produce synthetic leather of claim 7.
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| CN200910247028A CN101759999A (en) | 2009-12-25 | 2009-12-25 | Slurry of waterborne polyurethane for synthetic leather produced by the replacing wet method and application method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942766A (en) * | 2010-07-22 | 2011-01-12 | 上海华峰超纤材料股份有限公司 | Synthetic leather, preparation method and application thereof in protecting shoes |
| CN102080332A (en) * | 2010-12-27 | 2011-06-01 | 陕西科技大学 | Preparation method of waterborne polyurethane synthetic leather base |
| CN102418284A (en) * | 2011-09-02 | 2012-04-18 | 福建宝利特集团有限公司 | Preparation method of waterborne polyurethane synthetic leather bass |
| CN102787510A (en) * | 2012-08-20 | 2012-11-21 | 温州市长丰人造革有限公司 | Preparation method of waterborne polyurethane synthetic leather Bayse and applications thereof |
| CN102877295A (en) * | 2012-09-11 | 2013-01-16 | 江苏宝泽高分子材料股份有限公司 | Waterborne polyurethane (PU) bottoming resin for artificial leather |
| CN104195738A (en) * | 2014-08-26 | 2014-12-10 | 浙江梅盛实业股份有限公司 | High-emulation ecological leather and manufacturing technology thereof |
| CN104727156A (en) * | 2015-04-09 | 2015-06-24 | 淮阴工学院 | Method for filling and synthetizing full waterborne polyurethane base leather through nano attapulgite |
| CN108193511A (en) * | 2018-01-29 | 2018-06-22 | 嘉善威尔尼绒业有限公司 | A kind of processing method of aqueous polyurethane synthetic fabric |
| CN110218514A (en) * | 2019-04-26 | 2019-09-10 | 合肥科天水性科技有限责任公司 | A kind of Aqueous Polyurethane Coating Agent and its preparation method and application |
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2009
- 2009-12-25 CN CN200910247028A patent/CN101759999A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942766A (en) * | 2010-07-22 | 2011-01-12 | 上海华峰超纤材料股份有限公司 | Synthetic leather, preparation method and application thereof in protecting shoes |
| CN101942766B (en) * | 2010-07-22 | 2012-08-29 | 上海华峰超纤材料股份有限公司 | Synthetic leather, preparation method and application thereof in protecting shoes |
| CN102080332A (en) * | 2010-12-27 | 2011-06-01 | 陕西科技大学 | Preparation method of waterborne polyurethane synthetic leather base |
| CN102080332B (en) * | 2010-12-27 | 2012-05-09 | 陕西科技大学 | Method for manufacturing waterborne polyurethane synthetic leather bass |
| CN102418284A (en) * | 2011-09-02 | 2012-04-18 | 福建宝利特集团有限公司 | Preparation method of waterborne polyurethane synthetic leather bass |
| CN102787510A (en) * | 2012-08-20 | 2012-11-21 | 温州市长丰人造革有限公司 | Preparation method of waterborne polyurethane synthetic leather Bayse and applications thereof |
| CN102787510B (en) * | 2012-08-20 | 2014-12-17 | 温州市长丰人造革有限公司 | Preparation method of waterborne polyurethane synthetic leather Bayse and applications thereof |
| CN102877295A (en) * | 2012-09-11 | 2013-01-16 | 江苏宝泽高分子材料股份有限公司 | Waterborne polyurethane (PU) bottoming resin for artificial leather |
| CN104195738A (en) * | 2014-08-26 | 2014-12-10 | 浙江梅盛实业股份有限公司 | High-emulation ecological leather and manufacturing technology thereof |
| CN104727156A (en) * | 2015-04-09 | 2015-06-24 | 淮阴工学院 | Method for filling and synthetizing full waterborne polyurethane base leather through nano attapulgite |
| CN108193511A (en) * | 2018-01-29 | 2018-06-22 | 嘉善威尔尼绒业有限公司 | A kind of processing method of aqueous polyurethane synthetic fabric |
| CN110218514A (en) * | 2019-04-26 | 2019-09-10 | 合肥科天水性科技有限责任公司 | A kind of Aqueous Polyurethane Coating Agent and its preparation method and application |
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Open date: 20100630 |