Process for enhancing hygiene performance of superfine-fiber synthetic leather

A technology of ultra-fine fiber and hygienic performance, applied in fiber processing, textiles and papermaking, etc., can solve the problems of inability to permanently improve hygienic performance, physical filling and inability to wash with water, etc., and achieve the effect of improving hygienic performance

Active Publication Date: 2012-10-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many ways to improve the hygienic performance of microfiber synthetic leather, but most of the modification methods are only filled with substances containing active functional groups through physical methods, which cannot permanently improve its hygienic performance, mainly because physical filling is not washable.

Method used

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  • Process for enhancing hygiene performance of superfine-fiber synthetic leather
  • Process for enhancing hygiene performance of superfine-fiber synthetic leather
  • Process for enhancing hygiene performance of superfine-fiber synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of technique specific implementation steps of improving the hygienic performance of microfiber synthetic leather is as follows:

[0035] The microfiber synthetic leather base cloth after opening is subjected to acid treatment, water washing, glutaraldehyde modification, salt water washing, cross-linking 1G PAMAM, dealdehyde treatment, warm water washing and then drying in sequence, specifically including the following steps:

[0036] Step 1: In the case of a liquid ratio of 50, add superfine fiber synthetic leather and concentrated sulfuric acid with a mass concentration of 98% to the drum for 2 hours at a temperature of 35°C, where the amount of concentrated sulfuric acid is the weight of the base cloth 10%;

[0037] Step 2: Wash the base fabric treated in Step 1 at room temperature for 3 times (0.5h / time);

[0038] Step 3: adjust the pH of the bath solution to 6, and wash the base cloth with glutaraldehyde with a mass concentration of 25% at 25°C for 3 hours, ...

Embodiment 2

[0045] A kind of technique specific implementation steps of improving the hygienic performance of microfiber synthetic leather is as follows:

[0046] The microfiber synthetic leather base cloth after opening is subjected to acid treatment, water washing, glutaraldehyde modification, salt water washing, cross-linking 2G PAMAM, dealdehyde treatment, warm water washing and drying in sequence;

[0047] Step 1: In the case of a liquid ratio of 50, add superfine fiber synthetic leather and concentrated sulfuric acid with a mass concentration of 98% to the drum for 4 hours at a temperature of 45°C, where the amount of concentrated sulfuric acid is the weight of the base cloth 15%;

[0048] Step 2: Wash the base fabric treated in Step 1 with water 4 times at room temperature (0.5h / time);

[0049] Step 3: adjust the pH of the bath solution to 7, and wash the base cloth with glutaraldehyde with a mass concentration of 25% at 25°C for 5 hours, and the amount of glutaraldehyde is 15% (b...

Embodiment 3

[0055] A kind of technique specific implementation steps of improving the hygienic performance of microfiber synthetic leather is as follows:

[0056] The microfiber synthetic leather base cloth after fiber opening is sequentially acid-treated, washed with water, modified with glutaraldehyde, washed with salt water, cross-linked with 3G PAMAM, washed with warm water, and then dried;

[0057] Step 1: In the case of a liquid ratio of 50, add superfine fiber synthetic leather and concentrated sulfuric acid with a mass concentration of 98% to the drum for 4 hours at a temperature of 45°C, where the amount of concentrated sulfuric acid is the weight of the base cloth 12%;

[0058] Step 2: Wash the base fabric treated in Step 1 at room temperature for 3 times (0.5h / time);

[0059] Step 3: adjust the pH of the bath liquid to 7, and act on the washed base cloth with glutaraldehyde at 25°C with a mass concentration of 25% for 3 hours, and the glutaraldehyde dosage is 12% (based on the...

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Abstract

The invention relates to a process for enhancing hygiene performance of superfine-fiber synthetic leather. The process comprises the following steps of: firstly, adding 10%-15% of concentrated sulfuric acid with mass concentration of 98% under the situation that a liquor ratio is 50, and repeatedly washing resultant at a normal temperature after the reaction; adjusting the pH value of the resultant to 6-8, reacting glutaraldehyde with mass concentration of 25% with base cloth at a temperature of 20-50 DEG C, and repeatedly washing resultant with saline at the normal temperature; adding multi-amino polymer in the resultant, and performing crosslink on the mutli-amino polymer and the resultant at a temperature of 20-50 DEG C and with the pH being 6-8, wherein the mole ratio of the multi-amino polymer to the glutaraldehyde is 1:1-1:2; and finally, adding 1%-4% of aldehyde eliminating agent in resultant, reacting the agent and the resultant for 1-2 hours at a temperature of 30-50 DEG C, washing the resultant in water at a temperature of 30-50 DEG C, and drying the resultant. The process provided by the invention utilizes the two-step glutaraldehyde method to crosslink the base cloth and the multi-amino polymer to form the composite of the base cloth, the glutaraldehyde and the multi-amino polymer, so that active functional groups of the base cloth are enhanced, and the hygiene performance of the superfine fiber composition leather is permanently enhanced.

Description

technical field [0001] The invention relates to the field of polymer material synthesis and application, in particular to a process for improving the hygienic performance of superfine fiber synthetic leather. Background technique [0002] Microfiber synthetic leather (abbreviated as microfiber leather) is a composite material of superfine fiber and PU elastomer. Structurally, it is generally divided into two layers: the surface layer and the base layer. The surface layer is generally a PU film structure, and the base layer is a three-dimensional braided structure of superfine fiber bundles. Since the base fabric is made of microfiber, it has good elasticity, good air permeability, high strength, and soft hand feeling. Many internal physical properties of the product have greatly exceeded those of natural leather, and its external performance has the appearance of natural leather. However, due to the narrow gap between fiber bundles and PU and the lack of active functional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/59D06M13/402D06M13/123D06M11/55
Inventor 任龙芳孙森陈小珂王学川强涛涛
Owner SHAANXI UNIV OF SCI & TECH
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