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Degreasing method for animal hairs

A technology of animal hair and degreaser, applied in degumming and other directions, can solve the problems of poor degreasing effect, easy environmental pollution and high cost, and achieve the effect of in-depth degreasing effect, optimization of degreasing effect, and improvement of degreasing effect.

Inactive Publication Date: 2018-04-27
黄桂凤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature of soda ash degreasing agent is low, so the degreasing effect is poor; although the degreasing effect of organic solvent degreasing is good, the cost is high, and all kinds of organic solvents that are easy to pollute the environment are used, which is not conducive to environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The degreasing method of animal hair comprises the following steps: 1) removing the flesh and dust attached to the animal hair; 2) soaking the animal hair in a weak alkaline solution with a compound degreasing agent to perform a degreasing; 3) degreasing the animal hair with hot water; 4) soaking the animal hair with biological enzymes in a weak acid solution for secondary degreasing; 5) rinsing the animal hair with hot water for a second time, and drying to obtain degreased animal hair.

[0023] In step 2), the conditions for one-time degreasing are: the pH=8 of the weakly alkaline solution, the soaking temperature is 65°C, and the soaking time is 60min; the addition of the composite degreasing agent is 1% of the weight of the weakly alkaline solution, It is prepared by mixing sodium fluorosilicate, polyvinyl alcohol and sodium carbonate in a weight ratio of 1:3:8.

[0024] In step 3), the process of one rinse is as follows: first rinse with hot water at 60° C. for 8 m...

Embodiment 2

[0028] The degreasing method of animal hair comprises the following steps: 1) removing the flesh and dust attached to the animal hair; 2) soaking the animal hair in a weak alkaline solution with a compound degreasing agent to perform a degreasing; 3) degreasing the animal hair with hot water; 4) soaking the animal hair with biological enzymes in a weak acid solution for secondary degreasing; 5) rinsing the animal hair with hot water for a second time, and drying to obtain degreased animal hair.

[0029] In step 2), the conditions for primary degreasing are: the pH=9 of the weakly alkaline solution, the soaking temperature is 70°C, and the soaking time is 30min; the addition of the composite degreasing agent is 3% of the weight of the weakly alkaline solution, It is prepared by mixing sodium fluorosilicate, polyvinyl alcohol and sodium carbonate in a weight ratio of 1:5:3.

[0030] In step 3), the process of one rinse is as follows: first rinse with hot water at 65°C for 10 min...

Embodiment 3

[0034] The degreasing method of animal hair comprises the following steps: 1) removing the flesh and dust attached to the animal hair; 2) soaking the animal hair in a weak alkaline solution with a compound degreasing agent to perform a degreasing; 3) degreasing the animal hair with hot water; 4) soaking the animal hair with biological enzymes in a weak acid solution for secondary degreasing; 5) rinsing the animal hair with hot water for a second time, and drying to obtain degreased animal hair.

[0035] In step 2), the conditions for primary degreasing are: the pH=10 of the weakly alkaline solution, the soaking temperature is 60°C, and the soaking time is 50min; the addition of the composite degreasing agent is 5% of the weight of the weakly alkaline solution; It is prepared by mixing sodium fluorosilicate, polyvinyl alcohol and sodium carbonate in a weight ratio of 1:2:5.

[0036] In step 3), the process of one rinse is as follows: first rinse with hot water at 70° C. for 5 m...

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PUM

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Abstract

The invention relates to a degreasing method for animal hairs and belongs to the technical field of natural fiber processing. The method comprises the steps of: 1) removing skin, flesh and dust attached to the animal hairs; 2) soaking the animal hairs with a composite degreasing agent in a weak-alkaline solution to perform initial degreasing; 3) performing initial washing to the animal hairs withhot water; 4) soaking the animal hairs in a weak-acid solution with bio-enzyme to perform secondary degreasing; and 5) performing secondary washing to the animal hairs with hot water, and drying the animal hairs to obtain degreased animal hairs. The method is simple in processes, has good degreasing effect, and is low in threat on environment.

Description

technical field [0001] The invention relates to the technical field of natural fiber processing, and relates to a method for degreasing animal hair. Background technique [0002] The main component of animal hair fiber is a protein composed of a series of amino acids combined into a chain structure through peptide bonds, which is an excellent textile raw material. Because coarse animal hair fibers contain lipids, lipids form serious barriers to enzymes, reducing agents, swelling agents, etc.; subsequent processes of oil hydrolysis of cutin, such as decolorization, ultrafiltration, nanofiltration, etc., cause work efficiency to be blocked due to micropores Greatly reduce and seriously affect the quality of woolen fibers. Therefore, an important step in processing and utilizing animal hair fiber is to degrease first. At present, the most commonly used methods for degreasing animal hair fibers are soda ash degreasing and organic solvent degreasing. But the soda ash degreasin...

Claims

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Application Information

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IPC IPC(8): D01C3/02
CPCD01C3/02
Inventor 黄桂凤
Owner 黄桂凤
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