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Modification method for improving hygienic performance of superfine fiber synthetic leather base fabric through collagen

A superfine fiber and collagen technology, applied in fiber processing, fiber types, textiles and papermaking, etc., can solve problems such as unsatisfactory effects, achieve the effect of resource utilization and overcome poor hygiene performance

Active Publication Date: 2015-04-22
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using these post-finishing technologies to treat microfiber synthetic leather can improve the hygienic performance of microfiber synthetic leather base cloth to a certain extent, but the effect is still unsatisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Collagen Extraction:

[0035] Under the conditions of pH value 8 and temperature 60°C, add 0.8% alkaline protease of gelatin mass, hydrolyze gelatin for 5 hours, and extract a series of collagens with different molecular weights.

[0036] Step 2: Pretreatment of microfiber synthetic leather base cloth:

[0037] Under the temperature condition of 40 DEG C, use the treating agent of 15% of the mass of the dry ultrafine fiber synthetic leather base cloth to treat the ultrafine fiber synthetic leather base cloth for 4 hours, and obtain the superfine fiber synthetic leather base cloth modified by surface acid hydrolysis;

[0038] The treatment agent is concentrated sulfuric acid with a mass fraction of 98%.

[0039] Step 3: Collagen modification of superfine fiber synthetic leather base cloth:

[0040] Under the conditions of pH value 2.5 and temperature 20°C, graft the collagen extracted in step 1 onto the base cloth pretreated in step 2 and react for 1 hour, wher...

Embodiment 2

[0044] Step 1: Collagen Extraction:

[0045] Under the conditions of pH value 9 and temperature 55°C, add 0.8% alkaline protease to the gelatin mass, hydrolyze the gelatin for 3 hours, and extract a series of collagens with different molecular weights.

[0046] Step 2: Pretreatment of microfiber synthetic leather base cloth:

[0047] Under the temperature condition of 45 ℃, use the treating agent of 13% of the mass of the dry microfiber synthetic leather base cloth to treat the superfine fiber synthetic leather base cloth for 3 hours, and obtain the superfine fiber synthetic leather base cloth modified by surface acid hydrolysis;

[0048] The treatment agent is concentrated sulfuric acid with a mass fraction of 98%.

[0049] Step 3: Collagen modification of superfine fiber synthetic leather base cloth:

[0050] Under the conditions of pH value 5 and temperature 40°C, the collagen extracted in step 1 was grafted onto the base cloth pretreated in step 2 to react for 4 hours, a...

Embodiment 3

[0054] Step 1: Collagen Extraction:

[0055] Under the conditions of pH value 10 and temperature 45°C, add 0.8% of the gelatin mass by alkaline protease, hydrolyze the gelatin for 2 hours, and extract a series of collagens with different molecular weights.

[0056] Step 2: Pretreatment of microfiber synthetic leather base cloth:

[0057] Under the temperature condition of 50 DEG C, use the treating agent of 12% of the mass of the dry superfine fiber synthetic leather base cloth to treat the superfine fiber synthetic leather base cloth for 2 hours, and obtain the superfine fiber synthetic leather base cloth modified by surface acid hydrolysis;

[0058] The treatment agent is concentrated sulfuric acid with a mass fraction of 98%.

[0059] Step 3: Collagen modification of superfine fiber synthetic leather base cloth:

[0060] Under the conditions of pH value 7.5 and temperature 60°C, the collagen extracted in step 1 was grafted onto the base cloth pretreated in step 2 to react...

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Abstract

The invention relates to a modification method for improving hygienic performance of superfine fiber synthetic leather base fabric through collagen. The superfine fiber synthetic leather base fabric serves as a main body of synthetic leather, and water vapor can not be transferred effectively between fibers and the outside due to a few active groups on the base fabric. According to the modification method, gelatin is hydrolyzed to obtain the collagen; dry superfine fiber synthetic leather base fabric is processed with concentrated sulfuric acid to obtain the superfine fiber synthetic leather base fabric with the acid-hydrolysis modified surface; the extracted collagen is grafted to the processed base fabric for reaction to obtain target products. By the aid of the modification method, the active groups on the surface of the superfine fiber synthetic leather base fabric are effectively increased, covalent modification is performed on the surface of the superfine fiber synthetic leather base fabric through the collagen, the hygienic performance of the superfine fiber synthetic leather base fabric is improved through the collagen, resource utilization of the waste collagen is achieved, and meanwhile, the problem of the poor hygienic performance of the superfine fiber synthetic leather is solved.

Description

technical field [0001] The invention belongs to the technical field of application of superfine fiber synthetic leather, and in particular relates to a method for modifying collagen to improve the hygienic performance of superfine fiber synthetic leather base cloth. Background technique [0002] Microfiber synthetic leather is a composite material that uses polyamide microfiber as the base layer and polyurethane elastomer as the surface layer. The composition and structure of polyamide microfibers in the matrix layer are relatively simple, only containing carboxyl and amino groups at the end of the molecular chain, there are a large number of carbon chains and amide bonds in the molecular chain, but no side chains, so polyamide microfibers It contains few active groups; and the surface layer of polyurethane resin itself has less hydrophilic active groups. As the main part of synthetic leather, the performance of microfiber synthetic leather base fabric plays a decisive rol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/15D06M11/55D06M101/34D06M101/38
Inventor 强涛涛王晓芹王学川
Owner SHAANXI UNIV OF SCI & TECH
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