Method for preparing wholetussah silk powder from silk fibers with preserved sericin and fibroin

A technology of silk fiber and tussah silk, which is applied in fiber processing, animal fiber, textiles and papermaking, etc. It can solve the problems of low production rate, difficult standardization of raw materials, high pollution, etc., and achieve simple production process, preservation of biological value and environmental protection. friendly effect

Pending Publication Date: 2021-02-23
辽宁新宜环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The sources of raw materials for the production of tussah silk powder are complicated, and the raw materials are difficult to standardize
[0005] (2) Sericin is all removed during the production process of existing tussah silk powder
[0006] (3) The production process of existing tussah silk powder can only use silk fibroin as raw material to produce silk fibroin powder
[0007] (4) The production p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] (4) The degradation liquid cannot be reused in the preparation method of the existing tussah silk powder, causing the cost to be too high.

[0024] (5) The production process of existing tussah silk powder is complicated, and the preparation rate is low.

[0025] (6) The quality of existing tussah silk powder is uncontrollable and cannot meet the industrial standard production.

[0026] (7) The heavy metal content of existing tussah silk powder is difficult to reach the standard.

[0027] (8) Processes such as hydrochloric acid method, phosphoric acid method, sulfuric acid method, sodium hydroxide method used in the production of existing tussah silk powder have high energy consumption and high pollution.

[0028] Compared with the prior art, the present invention at least has the following advantages:

[0029] (1) The present invention uses the tussah silk fiber produced according to Chinese patent CN ZL.2015 1 0263018.5 as raw material, so that the quality of the ra...

Embodiment 1

[0039] A method for preparing tussah silk powder by using preserved sericin silk fiber may comprise the following steps:

[0040] Step 1. Prepare 300 liters of decomposing solution in a 500-liter enamel tank; the mass concentration of oxalic acid in the degradation solution is 3%, the mass concentration of ammonium chloride is 0.5%, and the mass concentration of ethylenediaminetetraacetic acid is 0.1%.

[0041] Step 2. According to Chinese patent CN ZL.2015 1 0263018.5, 15 kilograms of tussah silk is produced, and then placed in 10 nylon mesh bags.

[0042] Step 3. Put the degradation solution described in step 1 in a stainless steel tank, heat it to 90°C, then put 15 kg of tussah silk in a nylon mesh bag in step 2 into the degradation solution, stir regularly, and degrade at a constant temperature for 8 hours . The tussah silk in the nylon mesh bag has a complete shape, but it will be crushed by hand.

[0043] Step 4. Take the nylon mesh bag out of the degradation solution ...

Embodiment 2

[0046] A method for preparing tussah silk powder by using preserved sericin silk fiber may comprise the following steps:

[0047] Step 1. Prepare 300 liters of decomposing solution in a 500-liter enamel tank; the mass concentration of oxalic acid in the degradation solution is 3%, the mass concentration of ammonium chloride is 0.5%, and the mass concentration of ethylenediaminetetraacetic acid is 0.1%. When the degradation solution in the enamel tank is insufficient after each use, add oxalic acid, ammonium chloride, and ethylenediaminetetraacetic acid to replenish the enamel tank according to the above ratio.

[0048] Step 2. According to Chinese patent CN ZL.2015 1 0263018.5, 15 kilograms of tussah silk is produced, and then placed in 10 nylon mesh bags.

[0049] Step 3. Put the degradation solution described in step 1 in a stainless steel tank, heat it to 95°C, then put 15 kg of tussah silk in a nylon mesh bag in step 2 into the degradation solution, stir regularly, and deg...

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PUM

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Abstract

The invention discloses a method for preparing wholetussah silk powder from silk fibers with preserved sericin and fibroin. The method comprises the following steps: putting the silk fibers with preserved sericin and fibroin into a degradation solution for degradation at 80-90 DEG C for 5-12 hours at a constant temperature, and conducting homogenizing with an ultrahigh-pressure homogenizer to obtain the whole tussah silk powder, wherein the degradation solution is composed of oxalic acid, ammonium chloride and ethylenediamine tetraacetic acid, the mass concentration of oxalic acid in the degradation solution is 2%-4%, the mass concentration of ammonium chloride in the degradation solution is 0.2%-0.8%, and the mass concentration of ethylenediamine tetraacetic acid in the degradation solution is 0.01%-0.5%. According to the method, the sericin and the fibroin can be completely utilized to prepare the whole tussah silk powder, so the biological value of tussah silk is kept; and the method is simple in production process, high in preparation rate, friendly to environment and suitable for standardized production.

Description

technical field [0001] The invention relates to the field of silk product processing, in particular to a method for preparing tussah silk powder by using preserved sericin silk fiber. Background technique [0002] Tussah is the most common species of wild silkworm in my country, and it is also one of the characteristic resources of our country. The annual output of tussah cocoons is about 50,000 tons, accounting for more than 80% of the world's total. Tussah silk is composed of sericin and silk fibroin. Sericin is the protein that constitutes the outer tissue of tussah silk fibers, accounting for 15% of the total weight, and plays a role of protection and bonding to the silk fibroin wrapped inside it. [0003] In the prior art, the preparation method of tussah silk powder has at least the following problems: [0004] (1) The production raw material source of existing tussah silk powder is complicated, and raw material is difficult to standardize. [0005] (2) Sericin is al...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08H1/00D06M13/192D06M13/342D06M11/13D06M101/10
CPCC08H1/00C08L89/00C08L2205/025D06M11/13D06M13/192D06M13/342D06M2101/10
Inventor 屈清辉李孝博
Owner 辽宁新宜环保科技有限公司
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