Solvent method based high-wet-modulus bamboo, wood and cotton mixed fiber and preparation method thereof

A high wet modulus, mixed fiber technology, applied in the direction of cellulose/protein conjugated artificial filament, etc.

Inactive Publication Date: 2019-02-19
SHANGHAI DEFULUN CHEM FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today, the fiber produced by a single pulp is difficult to meet people's needs, and it

Method used

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  • Solvent method based high-wet-modulus bamboo, wood and cotton mixed fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of preparation method of the bamboo, wood, cotton mixed fiber of high wet modulus by solvent method, is made up of following steps:

[0056] (1) activation

[0057] The activation process is simple, less chemical reagents are added, and the whole process takes 1 hour, which is short in time and easy to operate. details as follows:

[0058] Deploy process water → add pulp → adjust ph value → add cellulase → terminate activation

[0059] Deployment process water: use deionized water; parameters: conductivity 2 , pH value: 6-8, temperature: 20-80°C;

[0060] Add pulp: bamboo pulp, wood pulp and cotton pulp; parameters: polymerization degree 300-1500, bamboo pulp: wood pulp: cotton pulp mass ratio = 1%-99%: 1%-99%: 1%-99%;

[0061] Adjust pH value: adjust with acid and alkali; parameters: pH value 4-6;

[0062] add cellulase: liquid cellulase; parameter: name AL70, product number IPL5B06610, supplier BIOPRACT;

[0063] Termination of activation: adding alkali...

Embodiment 2

[0080] Embodiment 2: bamboo, wood, cotton mixed cotton type fiber

[0081] Mix bamboo, wood and cotton pulp with a polymerization degree of 500, bamboo pulp: wood pulp: cotton pulp mass ratio = 40%: 30%: 30%, and add it until the conductivity is 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, and the pulp porridge after the activation is terminated is vacuum dehydrated After pressing, control the water content of 48% of the water-containing cellulose, crush it into 3cm*3cm particles, add 78% N-methylmorpholine-N-oxide aqueous solution, wherein the water-containing cellulose and N-methylmorpholine The mass ratio of the morphine-N-oxide aqueous solution is 1:4 to make the pulp swell, the outlet temperature is 70°C, the composition of the pre-dissolved pulp is: 11.5% cellulose, pH 9.5, the mixed solution after the pre-dissolver enters...

Embodiment 3

[0083] Embodiment 3: bamboo, wood, cotton mixed medium and long fiber

[0084] Mix bamboo, wood and cotton pulp with a polymerization degree of 550, bamboo pulp: wood pulp: cotton pulp mass ratio = 35%: 30%: 35%, and add it until the conductivity 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, terminate the activated pulp porridge, and vacuum After dehydration and pressing, control the water content of cellulose to 53% by mass, crush it into 3cm*3cm particles, add 85% N-methylmorpholine-N-oxide aqueous solution, wherein the cellulose and N-methyl The mass ratio of the morpholine-N-oxide aqueous solution is 1:3 to make the pulp swell, the outlet temperature is 68°C, the composition of the pre-dissolved pulp is: 9.5% cellulose, pH 9.0, and the mixed solution after passing through the pre-dissolving machine enters the dissolving machin...

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Abstract

The invention relates to the field of textiles, in particular to a solvent method based high-wet-modulus bamboo, wood and cotton mixed fiber and a preparation method thereof. The preparation method includes steps: activating, adding bamboo, wood and cotton mixed pulp into deionized water, adjusting a pH value, adding cellulase for activating, and adding alkali for adjusting the pH value; pressing;pre-dissolving, and adding water solution containing N-methylmorpholine-N-oxide in mass percent of 50-88%; dissolving, heating, vacuumizing, dewatering, dissolving, homogenizing and de-aerating; filtering; spinning, and adopting a dry-wet method for spinning forming; washing; bleaching; oiling; drying. The preparation method is simple in operation, free of industrial pollution, low in energy consumption, high in safety and suitable for large-scale industrial continuous production of solvent method based bamboo, wood and cotton mixed fibers. The bamboo, wood and cotton mixed fiber prepared according to the method keeps natural physical and chemical performances of bamboo, wood and cotton fibers and is free of chemical residues and high in wet modulus.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a solvent-processed high-humidity bamboo, wood and cotton mixed 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 complex processes, which make the country have to control the production scale of viscose fiber, and the wet modulus, dry strength, and wet strength of viscose fiber are low, which has become its disadvantage; The production process of solvent-based regenerated cellulose fiber uses N-methylmorpholine-N-oxide as a solvent. The whole production process has no chemical reaction, no industrial pollution, low energy consumption, simple process, and ...

Claims

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Application Information

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IPC IPC(8): D01F8/02
CPCD01F8/02
Inventor 王辉姜琨王晓亮茆瑞金朱长丽顾海朝汤杰
Owner SHANGHAI DEFULUN CHEM FIBER
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