A kind of 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 viscose fiber wet modulus, low dry strength and wet strength, high energy consumption of viscose fiber, complicated process, etc., and achieves soft hand feeling and high safety performance. , the effect of good air permeability

Active Publication Date: 2022-07-05
SHANGHAI LYOCELL FIBER DEV
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  • Abstract
  • Description
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  • Application Information

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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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  • A kind of solvent method high wet modulus protein fiber and preparation method thereof

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preparation example Construction

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

[0063] (A) Activation

[0064] The activation process is simple, the addition of chemical reagents is small, the whole process is about 1 hour, the time-consuming is short, and the operation is convenient. The process is as follows:

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

[0066] Among them, the preparation of process water: deionized water is used for process water; parameter requirements: conductivity 2 , pH value 6~8, temperature 20~80 ℃.

[0067] Add pulp: use wood pulp or bamboo pulp, the degree of polymerization is 300-1500.

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

[0069] Add cellulase: use liquid cellulase, optional commercial name AL70, product number IPL 5B06610, supplier BIOPRACT.

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

[0071] (B) Pressi...

Embodiment 1

[0088] Add the pulp with a degree of polymerization of 500 to a conductivity of 2 , pH value: 6.8, temperature: 50 ℃ process water, adjust the pH value to 5, add cellulase for activation for one hour, add sodium hydroxide to terminate the activation, and adjust the pH value to 10.5; the pulp after termination of activation is dehydrated by vacuum After pressing, the water content of the aqueous cellulose was controlled to be 48wt%, and pulverized into particles of 3cm*3cm; then a protein mixed solution and an 81wt% N-methylmorpholine-N-oxide aqueous solution were added, and the protein mixed solution was An aqueous solution containing 5-10wt% protein and 5-10wt% montmorillonite; wherein the mass ratio of aqueous cellulose and protein mixed solution is 1:0.22, and the mass ratio of aqueous cellulose and N-methylmorpholine-N-oxide aqueous solution is It is 1:3.8, and the pre-dissolved pulp is obtained after the pulp is swollen; the outlet temperature of the pre-dissolved pulp is ...

Embodiment 2

[0093] Add the pulp with a degree of polymerization of 550 to a conductivity of 2 , pH value: 6.0, temperature: 50 ℃ of process water, adjust the pH value to 4.5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, and adjust the pH value to 11; the porridge after termination of activation is vacuum dehydrated After pressing, the water content of the aqueous cellulose was controlled to be 53wt%, and pulverized into particles of 3cm*3cm; then a protein mixed solution and an 85wt% N-methylmorpholine-N-oxide aqueous solution were added, and the protein mixed solution was An aqueous solution containing 5-10wt% protein and 5-10wt% montmorillonite; wherein the mass ratio of aqueous cellulose and protein mixed solution is 1:0.2, and the mass ratio of aqueous cellulose and N-methylmorpholine-N-oxide aqueous solution is It is 1:3.3, and the pre-dissolved pulp is obtained after the pulp is swollen; the outlet temperature of the pre-dissolved pulp is ...

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Abstract

The invention discloses a solvent method high wet modulus protein fiber and a preparation method thereof, belonging to the field of textiles. The method comprises the steps of: (A) activation, the pulp is activated by cellulase to obtain pulp; (B) pressing, the pulp is pressed and dehydrated to obtain water-containing cellulose; (C) predissolving, water-containing cellulose and N-methyl cellulose are obtained The morpholine-N-oxide aqueous solution and the protein mixed solution are mixed to obtain a pre-dissolved pulp; (D) dissolving, and the pre-dissolved pulp is dissolved in a dissolving machine to obtain a slurry; (E) spinning, the slurry is used for spinning to obtain a solvent-based high Wet modulus protein fibers. The method has simple operation, no industrial pollution production, low energy consumption and high safety performance, and is suitable for large-scale industrialized continuous production. The obtained solvent-method high wet modulus protein fiber has a high wet modulus, contains protein components, and has good moisture absorption and perspiration, good air permeability, comfortable wearing, soft hand feeling, is conducive to continuous dyeing, easy printing and dyeing, and is conducive to the production of high-end fabrics .

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(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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