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A kind of production method of bionic superfine fiber synthetic leather

A technology of superfine fiber and production method, which is applied in the fields of fiber processing, textiles and papermaking, etc. It can solve the problems of non-natural leather hygienic performance and product safety issues, and achieve good hygienic performance, wide application fields, and good antistatic performance. Effect

Active Publication Date: 2021-08-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the production of microfiber synthetic leather has the following main problems: First, in the production of superfine fiber synthetic leather, the combination of superfine fiber and PU adopts a wet coagulation process, and a large amount of dimethylformamide is used. (DMF) solvent will produce a large amount of waste water containing DMF, and the residual DMF in the finished product will also cause product safety problems
However, there are few hydrophilic groups on the surface of microfibers, while natural leather is composed of collagen fibers, and there are a large number of hydrophilic groups on collagen fibers, so microfiber nonwovens do not have the hygienic performance, comfort and quality of natural leather. Handfeel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A production method of bionic superfine fiber synthetic leather, comprising the following steps:

[0035] (1) Dissolve collagen solid powder in 0.2 mol / L acetic acid aqueous solution to prepare a collagen solution with a concentration of 2 mg / mL, namely collagen solution A. Among them, the collagen is bovine skin collagen.

[0036]Superfine fiber non-woven fabric is passed through the impregnating tank that collagen solution A is housed, then by roll, the impregnation amount of control collagen solution A is 60% of superfine fiber non-woven fabric weight, then passes through oven, at 35 ℃ Conditions of drying, to obtain the pretreatment base cloth A. Among them, the superfine fiber nonwoven fabric is an island-fixed superfine fiber nonwoven fabric.

[0037] (2) First, dissolve zinc sulfate heptahydrate in 0.2mol / L acetic acid solution to prepare 1 mg / L copper sulfate solution, then mix the copper sulfate solution and collagen solution A at a volume ratio of 1:1 , to ...

Embodiment 2

[0043] A production method of bionic superfine fiber synthetic leather, comprising the following steps:

[0044] (1) Dissolve collagen solid powder in 0.3 mol / L acetic acid aqueous solution to prepare a collagen solution with a concentration of 1 mg / mL, namely collagen solution A. Wherein, the collagen is fish skin collagen.

[0045] Superfine fiber non-woven fabric is passed through the impregnating tank that collagen solution A is housed, then by roll, the impregnation amount of control collagen solution A is 62% of superfine fiber non-woven fabric weight, then passes through oven, at 30 ℃ Conditions of drying, to obtain the pretreatment base cloth A. Among them, the microfiber nonwoven fabric is non-island-fixed microfiber nonwoven fabric.

[0046] (2) First, dissolve zinc sulfate heptahydrate in 0.3mol / L acetic acid solution to prepare 2 mg / L copper sulfate solution, then mix the copper sulfate solution and collagen solution A at a volume ratio of 1:2 , to obtain collag...

Embodiment 3

[0052] A production method of bionic superfine fiber synthetic leather, comprising the following steps:

[0053] (1) Dissolve collagen solid powder in 0.25 mol / L aqueous acetic acid solution to prepare a collagen solution with a concentration of 1.5 mg / mL, namely collagen solution A. Among them, the collagen is bovine bone collagen.

[0054] Superfine fiber non-woven fabric is passed through the impregnating tank that collagen solution A is housed, then by roller, the impregnation amount of control collagen solution A is 67% of superfine fiber non-woven fabric weight, then passes through oven, at 20 ℃ Conditions of drying, to obtain the pretreatment base cloth A. Among them, the superfine fiber nonwoven fabric is an island-fixed superfine fiber nonwoven fabric.

[0055] (2) First, dissolve zinc sulfate heptahydrate in 0.25mol / L acetic acid solution to prepare 1.5mg / L copper sulfate solution, and then mix the copper sulfate solution and collagen solution A according to the vo...

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PUM

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Abstract

A biomimetic microfiber synthetic leather and a production method thereof, using collagen solution A to impregnate superfine fiber nonwoven fabric, drying in an oven after liquid rolling, to obtain pretreated base cloth A; using collagen solution B to impregnate pretreated base cloth A, drying in an oven after squeezing liquid to obtain pretreated base cloth B; impregnating pretreated base cloth B with collagen solution C, drying in an oven after squeezing liquid to obtain pretreated base cloth C; based on pretreated base cloth C The bionic superfine fiber synthetic leather can be obtained through dyeing and post-finishing process. In the present invention, collagen is used as an assembly material, self-assembled on the surface of ultrafine fibers, and a composite fiber with ultrafine fibers as "core" and collagen as "shell" is produced to obtain a three-dimensional interweaving structure. This bionic ultrafine Fiber synthetic leather has good hygienic performance and antistatic performance, and has an extremely wide range of applications.

Description

technical field [0001] The invention relates to the technical field of ultrafine fiber synthetic leather, in particular to a bionic ultrafine fiber synthetic leather and a production method thereof. Background technique [0002] The raw hides used to produce natural leather are limited, and the production of natural leather is a process of high energy consumption and high pollution, which will bring great pollution load to the environment. In recent years, developed countries such as the European Union have also proposed new standards for the safety of natural leather itself, strictly restricting the presence of toxic chemicals such as Cr(VI), azo dyes, pentachlorophenol (PCP) and free formaldehyde in natural leather. . From the perspective of raw leather resources, environmental protection, product safety and market, the production of natural leather is facing great challenges. [0003] For the above reasons, countries all over the world are accelerating the development o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/15
CPCD06M15/15
Inventor 马兴元刘帅赵昭丁博
Owner SHAANXI UNIV OF SCI & TECH
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