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Solvent method high-wet-modulus protein fiber and preparation method thereof

A high wet modulus, protein fiber technology, applied in the textile field, can solve the problems of high pollution, complex process, low wet modulus of viscose fiber, low dry strength and wet strength, etc.

Active Publication Date: 2020-03-17
SHANGHAI LYOCELL FIBER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Viscose fiber has long-term production characteristics such as high energy consumption, high pollution, and complicated processes, so the production scale of viscose fiber has to be controlled, and viscose fiber has disadvantages such as wet modulus, dry strength, and low wet strength.

Method used

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  • Solvent method high-wet-modulus protein fiber and preparation method thereof

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preparation example Construction

[0062] A preparation method of a solvent method high wet modulus protein fiber, comprising the following steps:

[0063] (A) activation

[0064] The activation process is simple, less chemical reagents are added, and the whole process takes about 1 hour, which is short in time and easy to operate. The process is as follows:

[0065] Prepare process water → add pulp → adjust pH value → add cellulase → terminate activation.

[0066] Among them, the deployment of process water: process water using deionized water; parameter requirements: conductivity 2 , pH 6-8, temperature 20-80°C.

[0067] Adding pulp: wood pulp or bamboo pulp is used, and the degree of polymerization is 300-1500.

[0068] Adjust the pH value: adjust the pH to 4-6 with acid and alkali.

[0069] Adding cellulase: use liquid cellulase, optional commercially available trade name AL70, product number IPL 5B06610, supplier BIOPRACT.

[0070] Termination of activation: Add alkali to adjust the pH to 9-13.

...

Embodiment 1

[0088] Add the pulp with a degree of polymerization of 500 until the conductivity is less than 5μs / cm 2 , pH value: 6.8, temperature: 50 ℃ process water, adjust the pH value at 5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the pH value at 10.5; after the activation is terminated, the porridge is vacuum dehydrated After pressing, control the water content of the hydrous cellulose to 48wt%, and pulverize it into 3cm*3cm particles; then add protein mixed solution and 81wt% N-methylmorpholine-N-oxide aqueous solution, the protein mixed solution is An aqueous solution containing 5-10wt% protein and 5-10wt% montmorillonite; wherein the mass ratio of aqueous cellulose to protein mixed solution is 1:0.22, and the mass ratio of aqueous cellulose to N-methylmorpholine-N-oxide aqueous solution The ratio is 1:3.8, the pulp is swollen to obtain pre-dissolved pulp; the outlet temperature of the pre-dissolved pulp is 70°C, the composition...

Embodiment 2

[0093] Add the pulp with a degree of polymerization of 550 until the conductivity is less than 5μs / cm 2 , pH value: 6.0, temperature: 50 ℃ process water, adjust the pH value at 4.5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, adjust the pH value at 11; after the activation is terminated, the porridge is vacuum dehydrated After pressing, control the water content of the hydrous cellulose to 53wt%, and pulverize it into 3cm*3cm granules; then add protein mixed solution and 85wt% N-methylmorpholine-N-oxide aqueous solution, said protein mixed solution is An aqueous solution containing 5-10 wt% protein and 5-10 wt% montmorillonite; wherein the mass ratio of aqueous cellulose to protein mixed solution is 1:0.2, and the mass ratio of aqueous cellulose to N-methylmorpholine-N-oxide aqueous solution The ratio is 1:3.3, the pulp is swollen to obtain pre-dissolved pulp; the outlet temperature of the pre-dissolved pulp is 68°C, the compositio...

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Abstract

The invention discloses a solvent method high-wet-modulus protein fiber and a preparation method thereof, and belongs to the field of textile. The method includes the steps: (A) activation, to be specific, performing cellulase activation on pulp to obtain slush pulp; (B) squeezing, to be specific, squeezing and dewatering the slush pulp to obtain aqueous cellulose; (C) pre-dissolving, to be specific, mixing the aqueous cellulose, N-methylmorpholine-N-oxide water solution and protein mixed solution to obtain pre-dissolving slurry; (D) dissolving, to be specific, dissolving the pre-dissolving slurry in a dissolving machine to obtain slurry; (E) spinning, to be specific, spinning the slurry to obtain the solvent method high-wet-modulus protein fiber. The method is simple in operation, free from industrial pollution in production, low in energy consumption, high in safety performance and applicable to large-scale industrial continuous production. The prepared solvent method high-wet-modulus protein fiber has high wet modulus, contains protein components and is good in moisture absorption and sweat releasing properties, comfortable to wear, soft in hand feeling, beneficial to continuousdyeing, convenient to print and dye and beneficial to production of high-end fabrics.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a solvent-processed high-humidity modulus protein fiber and a preparation method thereof. Background technique [0002] The development of regenerated cellulose fiber has formed two major categories of products, the first category is viscose fiber, and the second category is solvent-process regenerated cellulose fiber. Viscose fiber has long-term production characteristics such as high energy consumption, high pollution, and complicated processes, so the production scale of viscose fiber has to be controlled, and viscose fiber has disadvantages such as wet modulus, dry strength, and low wet strength. The production process of regenerated cellulose fiber by solvent method uses N-methylmorpholine-N-oxide as the solvent, and some functional materials can also be added to it. There is no chemical reaction in the whole production process, no industrial pollution, low energy consumpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F1/10D01F11/02
CPCD01F2/00D01F1/103D01F1/10D01F11/02
Inventor 茆瑞金张建东孙继王辉顾海朝余亮陈欢袁彪
Owner SHANGHAI LYOCELL FIBER DEV
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