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Preparing method for transparent wood frog skin

A frog skin, transparent technology, applied in the field of leather, can solve the problems of affecting the dyeing effect, the tanning method is not environmentally friendly, and the transparent treatment of forest frog skin has not been disclosed, so as to achieve the effect of realizing utilization and broad application prospects

Inactive Publication Date: 2016-02-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of this invention is to apply Rana skin to the preparation of clothing raw materials. However, on the one hand, the black and green properties of Rana skin affect its dyeing effect, and on the other hand, the heavy tanning process will inevitably affect the mechanical properties of the finished Rana skin. Cause adverse effects, and the tanning method is not conducive to environmental protection in addition, the preparation method described in this invention obviously needs to be further improved and perfected
[0003] The black-green color of the Rana skin conceals the texture of the Rana skin itself to a certain extent, but so far there is no technology related to the transparent treatment of the Rana skin.

Method used

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  • Preparing method for transparent wood frog skin
  • Preparing method for transparent wood frog skin
  • Preparing method for transparent wood frog skin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) get the wood frog skin (such as figure 1 Shown) 200g, submerged in a beaker with 1000ml of distilled water, put the beaker in a constant temperature box, adjust the temperature to 10°C, let it stand for 3.0h, add 25.362g of sodium chloride, so that the mass ratio of sodium chloride to distilled water 1:40, stand still, heat up to 22°C, keep warm for 0.2h;

[0023] (2) Take out the wood frog skin obtained in step (1), rinse it with distilled water, remove the skin of the limbs of the wood frog skin and the residual fat and other sundries on the surface, weigh the quality of the remaining wood frog skin to be 48.563g, and immerse in the mass percent In a 0.3% sodium hydroxide aqueous solution, stir and let stand for 2.0 h, then add 0.1 mol / L ammonium sulfate aqueous solution to adjust the pH of the solution to 6.0, stir and let stand for 0.5 h.

[0024] (3) Take out the wood frog skin obtained in step (2), wash it with distilled water, put it into a trypsin aqueous s...

Embodiment 2

[0026] (1) Take 200g of wood frog skin, immerse it in a beaker with 1000ml of distilled water, put the beaker in a constant temperature box, adjust the temperature to 15°C, keep it for 12.0h, add 40.382g of sodium chloride to make the sodium chloride The mass ratio with distilled water is 1:25, let it stand still, raise the temperature to 30°C, and keep it warm for 0.5h;

[0027] (2) Take out the wood frog skin obtained in step (1), rinse it with distilled water, remove the skin of the limbs of the wood frog skin and the residual fat and other sundries on the surface, weigh the remaining wood frog skin quality as 52.739g, and immerse in the mass percent In an aqueous sodium hydroxide solution with a concentration of 0.9%, let it stand for 4.0 hours after stirring, then add 0.1mol / L ammonium sulfate aqueous solution, adjust the pH value of the solution to 8.5, and let it stand for 1.0 hours after stirring;

[0028] (3) Take out the wood frog skin obtained in step (2), wash it w...

Embodiment 3

[0030] (1) Take 200g of Rana skin, immerse it in a beaker with 1000ml of distilled water, put the beaker in a constant temperature box, adjust the temperature to 24°C, let it stand for 24.0h, add 200.102g of sodium chloride to make the sodium chloride The mass ratio with distilled water is 1:5, let it stand still, add warm water to raise the temperature to 34°C, and keep it warm for 2.0h;

[0031] (2) Take out the wood frog skin obtained in step (1), rinse it with distilled water, remove the skin of the limbs of the wood frog skin and residual fat and other sundries on the surface, weigh the remaining wood frog skin quality to be 46.873g, and immerse in the mass percent In an aqueous sodium hydroxide solution with a concentration of 1.5%, let stand for 6.0 hours after stirring, then add 0.1 mol / L ammonium sulfate aqueous solution to adjust the pH value of the solution to 9.5, and let stand for 2.0 hours after stirring.

[0032] (3) Take out the wood frog skin obtained in step ...

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Abstract

The invention provides a preparing method for transparent wood frog skin. According to the preparing method, the wood frog skin serves as a raw material, a trypsin hydrolysis method is adopted, the black green on the surface of the wood frog skin is effectively removed, and the wood frog skin which is transparent in character and retains original special textures is obtained; the wood frog skin becomes a novel leather raw material convenient to dye; and meanwhile a new material is provided for process design. By means of the preparing method, effective utilization of the wood frog skin is achieved; and in addition, the preparing process is beneficial to environmental protection and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of tanning, in particular to the tanning technology of Rana skin, in particular to a method for preparing transparent Rana skin through enzymatic softening and hydrolysis. technical background [0002] Leather tanning is a relatively mature leather processing technology, mainly referring to the technology of tanning cowhide, sheepskin, fish skin, etc. In the patent document with the application number WO2015 / 127935A1 "Method for tanning hides and tanned leather produced by means of said method", a leather tanning method is disclosed, and the control of the pH value range during the tanning process is studied and discussed. In the patent document of Zhang Mei, Dong Henan, etc., whose application number is 201210364423.2 "Tanning Process of Rana Skin in Northeast China", a tanning method of Rana skin is disclosed, which is to tan the mature skin of Rana skin to make it have a certain The practicability has re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/00
CPCC14C3/00
Inventor 张梅张俞静邓旭明李雪琪徐文宇曾洁慧马亚莉
Owner JILIN UNIV
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