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Preparation method of simulated leather grain surface layer nanofiber biomimetic membrane

A technology of nanofiber and grain layer, applied in fiber treatment, coating, non-woven fabrics, etc., can solve the problem that the physical and chemical properties of the second layer leather are not as good as the top layer leather, and achieve good air permeability and water vapor permeability.

Active Publication Date: 2021-03-02
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that the physical and chemical properties of the polyurethane-treated second-layer leather are not as good as those of the top-layer leather, the present invention provides a synthetic leather with good hygienic performance Preparation method of nanofiber biomimetic membrane with grain surface layer

Method used

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  • Preparation method of simulated leather grain surface layer nanofiber biomimetic membrane
  • Preparation method of simulated leather grain surface layer nanofiber biomimetic membrane
  • Preparation method of simulated leather grain surface layer nanofiber biomimetic membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Take solvent-based polyurethane (6008D, Asahikawa Chemical Co., Ltd.) as an example for spinning solution. Put the polyurethane in a 10mL needle-free medical syringe, install a metal flat needle and connect it to a positive high voltage. Fix the two-layer leather with foam coating on the electrospinning receiver with scotch tape, and connect the negative high voltage. Start the electrospinning machine, and spin under the condition of ambient temperature of 30°C, humidity of about 40%, injection speed of 0.06mm / min, receiving speed of 140r / min and ventilation.

Embodiment 2

[0031] Dilute twice with solvent-based polyurethane (6008D, Asahikawa Chemical Co., Ltd.) as the spinning solution. Put the polyurethane in a 10mL needle-free medical syringe, install a metal flat needle and connect it to a positive high voltage. Fix the two-layer leather with foam coating on the electrospinning receiver with scotch tape, and connect the negative high voltage. Start the electrospinning machine, and spin under the condition of ambient temperature of 40°C, humidity of about 40%, injection speed of 0.06mm / min, receiving speed of 50r / min and ventilation.

Embodiment 3

[0033] Take solvent-based polyurethane (6030K, Asahikawa Chemical Co., Ltd.) as an example for spinning solution. Put the polyurethane in a 10mL needle-free medical syringe, install a metal flat needle and connect it to a positive high voltage. Fix the two-layer leather with foam coating on the electrospinning receiver with scotch tape, and connect the negative high voltage. Start the electrospinning machine, and spin under the condition of ambient temperature of 30°C, humidity of about 40%, injection speed of 0.06mm / min, receiving speed of 140r / min and ventilation.

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Abstract

The invention provides a preparation method of a simulated leather grain surface layer fiber biomimetic material with good hygienic property. The preparation method comprises the following steps that(1), an electrostatic spinning solution is prepared; (2), split leather is pretreated; and (3), electrostatic spinning is carried out. According to the scheme of the preparation method of the simulated leather grain surface layer nanofiber biomimetic material, a reasonable manufacturing process is adopted, so that the preparation method is suitable for all spinning solutions which can be applied to electrostatic spinning; and by preparing reasonable manufacturing process parameters, nanofibers with stable and reliable quality are obtained, and a dermis grain surface layer structure is simulated.

Description

technical field [0001] The invention relates to the technical field of nanometer preparation, in particular to a method for preparing a nanofiber bionic material for an artificial leather grain surface layer. Background technique [0002] In the process of tanning, cowhide needs to be split due to its thick raw hide, resulting in a large number of two-layer leather without grain. Because the two-layer leather has no grain surface and the fiber structure is different from that of the top layer leather, its performance and application range are greatly limited. In order to solve the problem of the missing grain layer of split leather, polyurethane coating is often used as the surface to prepare artificial grain layer in practical applications, but the physical and chemical properties of split leather covered with polyurethane coating are far less excellent than that of top leather. There is a large difference, so the performance is also very different, and the excellent perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H13/00D04H1/728D04H1/4358D04H3/02D04H3/009D01D5/00D06N3/14D06N3/00
CPCD04H13/00D04H1/728D04H3/02D04H1/4358D04H3/009D01D5/0084D06N3/14D06N3/0043D06N3/0088D06N3/0077Y02P70/62
Inventor 李彦春陈楠曲建波王建勇
Owner QILU UNIV OF TECH
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