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Production technology of cellulose carbamate fiber filaments

A urethane and production process technology, which is applied in the production process of regenerated cellulose fiber and the production process of cellulose urethane fiber filament, can solve the problem that the process of cellulose urethane fiber cannot adapt to industrialization Large-scale production and other issues, to achieve good spinnability, taking into account production costs, and good product performance.

Active Publication Date: 2017-05-24
YIBIN GRACE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims to solve the problem that the existing process for producing cellulose urethane fiber cannot adapt to industrialized large-scale production, and provides a production process for cellulose urethane fiber filament, which is suitable for industrialized large-scale production. The prepared spinning dope has good spinnability and good performance of the final product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A production process of cellulose urethane fiber filament, comprising the following process steps:

[0046] A. Activation of cellulose

[0047] The cellulose is soaked in sodium hydroxide solution first, and then subjected to alkalization treatment. After the treatment, it is filtered and washed, and then the alkalized cellulose is vacuum-dried to obtain activated cellulose;

[0048] B, the preparation of cellulose carbamate

[0049] Adding liquid ammonia solution of urea to the activated cellulose, soaking it, taking it out and drying it in a vacuum drying oven, and then heating it with microwaves to carry out esterification reaction to obtain cellulose carbamate;

[0050] C, the preparation of cellulose carbamate solution

[0051] Add cellulose carbamate to the sodium hydroxide solution for the first mixing and dissolving; then add the sodium hydroxide solution to the mixture for the second mixing and dissolving; add the sodium hydroxide solution to the mixture for ...

Embodiment 2

[0058] On the basis of embodiment 1:

[0059] Preferably, in step A, the cellulose is cotton linter pulp with a degree of polymerization of 400.

[0060] Preferably, in step A, the mass concentration of the sodium hydroxide solution is 15%, and the volume ratio of the sodium hydroxide to the amount of cellulose is 4:1.

[0061] Preferably, in step A, the soaking time is 1 hour, and the temperature is 5°C.

[0062] Preferably, in step A, the vacuum drying time is 1 h, and the temperature is 40°C.

Embodiment 3

[0064] On the basis of embodiment 1:

[0065] Preferably, in step A, the cellulose is cotton linter pulp with a degree of polymerization of 600.

[0066] Preferably, in step A, the mass concentration of the sodium hydroxide solution is 20%, and the volume ratio of the sodium hydroxide to the amount of cellulose is 6:1.

[0067] Preferably, in step A, the soaking time is 2 hours and the temperature is 15°C.

[0068] Preferably, in step A, the vacuum drying time is 3 hours, and the temperature is 60°C.

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Abstract

The invention relates to a production technology of cellulose carbamate fiber filaments, and belongs to the technical field of production of cellulose carbamate fibers. A complete cellulose carbamate fiber filament production process with high completeness is formed through specific cellulose activation, cellulose carbamate preparation, cellulose carbamate solution preparation and spinning steps, a prepared spinning stock solution has good spinnability, and the final product has good performances, so the technology is very suitable for industrial large-scale production, and considers the production cost, the production efficiency and the product quality.

Description

technical field [0001] The invention relates to a production process of regenerated cellulose fibers, more specifically, the invention relates to a production process of cellulose urethane fiber filaments, and belongs to the technical field of cellulose urethane fiber production. Background technique [0002] Cellulose fibers are chemical fibers made from natural fibers that are continuously regenerated in nature. Nowadays, the production of cellulose fiber is mainly viscose method, and the product produced is viscose fiber. [0003] Viscose fiber is a kind of regenerated cellulose fiber, and it is one of the earliest chemical fibers put into industrial production. Viscose fiber has good hygroscopicity, comfortable wearing, and excellent spinnability. It is often blended and interwoven with cotton, wool or various synthetic fibers, and used in various clothing and decorative textiles. High-strength viscose fibers prepared by using different raw materials and spinning proce...

Claims

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Application Information

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IPC IPC(8): D01F2/24C08B15/06
Inventor 冯涛邓传东孙毅李蓉玲李雪梅唐金钟贺敏张玉剑易家祥
Owner YIBIN GRACE GROUP CO LTD
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