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Method for increasing moisture permeability of superfine fiber synthetic leather

A water vapor permeability and microfiber technology, which is applied in fiber processing, textiles and papermaking, etc., can solve the problem of low water vapor permeability of base fabrics, and achieve resource utilization, tensile strength improvement, and water vapor permeability improvement. Effect

Inactive Publication Date: 2016-10-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcoming of the prior art, the purpose of the present invention is to provide a kind of way that improves the water vapor permeability of the superfine fiber synthetic leather, by grafting collagen to the superfine fiber synthetic leather, solve the problem of the base cloth in the prior art The problem of low water vapor permeability

Method used

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  • Method for increasing moisture permeability of superfine fiber synthetic leather
  • Method for increasing moisture permeability of superfine fiber synthetic leather
  • Method for increasing moisture permeability of superfine fiber synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Sulfuric acid treatment of base cloth

[0026] Put the base cloth with a dry weight of 10.5g in a drum at 50°C, add 525g of water and 1.05g of sulfuric acid, heat it for 2h, wash it thoroughly with water, and dry it in an oven at 80°C for 2h.

[0027] (2) Urea-formaldehyde resin treatment of base cloth

[0028] Put the pretreated base cloth in the drum, add urea-formaldehyde resin to 8% of the dry weight of the base cloth, that is, 0.84g, add water 315g, add 5% of the total amount of urea-formaldehyde resin and collagen, that is, 0.095g Catalyst ZnSO 4 , use glacial acetic acid to adjust the pH of the mixed bath to 4.5, treat it in the infrared sample dyeing machine at 45°C for 2 hours, then stop, take it out, and wash it thoroughly with water.

[0029] (3) Collagen grafting

[0030] Add 10% of the dry weight of the base cloth treated with urea-formaldehyde resin, that is, 1.05g of collagen, add 315g of water, and treat it in an infrared sample dyeing machine at ...

Embodiment 2

[0034] (1) Sulfuric acid treatment of base cloth

[0035] Put the base cloth with a dry weight of 10.0g in a drum at 40°C, add 500g of water and 1.2g of sulfuric acid, heat for 3 hours, wash it thoroughly with water, and dry it in an oven at 80°C for 2 hours.

[0036] (2) Urea-formaldehyde resin treatment of base cloth

[0037] Put the base cloth pretreated by sulfuric acid in the drum, add 10% of the dry weight of the base cloth, that is, 1.0g of urea-formaldehyde resin, add 300g of water, add 5% of the total amount of urea-formaldehyde resin and collagen, that is, 0.11 g Catalyst ZnSO 4 , use glacial acetic acid to adjust the pH of the mixed bath to 4.5, treat it in the infrared sample dyeing machine at 45°C for 1.5h, then stop, take it out, and wash it thoroughly with water.

[0038] (3) Collagen grafting

[0039] Add 12% of the dry weight of the base cloth treated with urea-formaldehyde resin, that is, 1.2 g of collagen, add 300 g of water, and treat it in the infrared ...

Embodiment 3

[0043] (1) Sulfuric acid treatment of base cloth

[0044] Put the base cloth with a dry weight of 10.3g in a drum at 45°C, add 515g of water and 1.545g of sulfuric acid, heat it for 2.5h, wash it fully with water, and dry it in an oven at 80°C for 2h.

[0045] (2) Urea-formaldehyde resin treatment of base cloth

[0046] Put the pretreated base cloth in the drum, add 10% of the dry weight of the base cloth, that is, 1.03g of urea-formaldehyde resin, add 309g of water, add 5% of the total amount of urea-formaldehyde resin and collagen, that is, 0.11g Catalyst ZnSO 4 , use glacial acetic acid to adjust the pH of the mixed bath solution to 5, treat it in the infrared sample dyeing machine at 50°C for 1 hour, then stop, take it out, and wash it thoroughly with water.

[0047] (3) Collagen grafting

[0048] Add 11% of the dry weight of the base cloth treated with urea-formaldehyde resin, that is, 1.133g of collagen, add 309g of water, and treat it in the infrared sample dyeing ma...

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Abstract

The invention is a method for improving the water vapor permeability of superfine fiber synthetic leather. Firstly, sulfuric acid is used to pretreat the base cloth of superfine fiber synthetic leather, so that amino groups are exposed on the surface of superfine fiber synthetic leather; then, urea-formaldehyde resin is used as a crosslink agent, the urea-formaldehyde resin has a methylol group after hydrolysis, which will connect the amino group of the base cloth with the amino group on the collagen, so that the collagen is grafted to the surface of the superfine fiber synthetic leather base cloth to achieve a hydrophilic effect; the present invention Effectively increase the active groups on the surface of the superfine fiber synthetic leather base cloth, realize the covalent modification of the surface of the microfiber synthetic leather base cloth by collagen, and improve the water vapor permeability of the microfiber synthetic leather base cloth, The resource utilization of waste skin collagen from biomass is realized, and the problem of poor water vapor permeability of ultrafine fiber synthesis is solved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for improving the water vapor permeability of superfine fiber synthetic leather. Background technique [0002] Microfiber synthetic leather is a kind of imitation leather material composed of PU microporous elastomer and superfine fiber bundles. It is made of superfine fiber non-woven fabric, impregnated with polyurethane, and then coated with polymer film-forming agent. Because its fibers are very thin, its structure is closer to natural leather, and it also gives superfine fiber synthetic leather Similar to the performance of natural leather. However, microfibers contain very few active groups, the fibers are extremely fine, and the specific surface area is large, which leads to the ineffective transmission of water vapor between the fibers and the outside world, so the moisture absorption and dehydration properties are poor, and the...

Claims

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Application Information

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IPC IPC(8): D06M15/15D06M13/432D06M11/55
CPCD06M15/15D06M11/55D06M13/432
Inventor 王学川赵佩任龙芳强涛涛
Owner SHAANXI UNIV OF SCI & TECH
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