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Production method of cellulose carbamate filament yarn

A technology of carbamate and production method, which is applied in the production of regenerated cellulose fiber and the production field of cellulose carbamate fiber filament, and can solve the problem that the process of cellulose carbamate fiber cannot adapt to large-scale industrialization Production and other issues, to achieve the effect of good spinnability, wide source and good strength

Inactive Publication Date: 2017-03-29
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 large-scale industrial production, and provides a production method of cellulose urethane fiber filament, which is suitable for large-scale industrial 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

[0041] A production method of cellulose urethane fiber filament, comprising the following processing steps:

[0042] A. Activation of cellulose

[0043] Dry the cellulose first, then soak the dried cellulose in liquid ammonia to activate it to obtain activated cellulose;

[0044] B, the preparation of cellulose carbamate

[0045] Adding a mixture of urea and thiourea to the activated cellulose, soaking to obtain a mixture of activated cellulose, urea and thiourea, and then heating it for esterification to obtain cellulose carbamate;

[0046] C, the preparation of cellulose carbamate solution

[0047] Add cellulose carbamate to the solution of sodium hydroxide and aluminum oxide, freeze and react at -10°C for 2 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;

[0048] D. Spinning

[0049] The spinning dope in step C is made into cellulose urethane fiber filament by wet spin...

Embodiment 2

[0055] A production method of cellulose urethane fiber filament, comprising the following processing steps:

[0056] A. Activation of cellulose

[0057] Dry the cellulose first, then soak the dried cellulose in liquid ammonia to activate it to obtain activated cellulose;

[0058] B, the preparation of cellulose carbamate

[0059] Adding a mixture of urea and thiourea to the activated cellulose, soaking to obtain a mixture of activated cellulose, urea and thiourea, and then heating it for esterification to obtain cellulose carbamate;

[0060] C, the preparation of cellulose carbamate solution

[0061] Add cellulose carbamate to the solution of sodium hydroxide and aluminum oxide, freeze and react at 0°C for 4 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;

[0062] D. Spinning

[0063] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinni...

Embodiment 3

[0065] A production method of cellulose urethane fiber filament, comprising the following processing steps:

[0066] A. Activation of cellulose

[0067] Dry the cellulose first, then soak the dried cellulose in liquid ammonia to activate it to obtain activated cellulose;

[0068] B, the preparation of cellulose carbamate

[0069] Adding a mixture of urea and thiourea to the activated cellulose, soaking to obtain a mixture of activated cellulose, urea and thiourea, and then heating it for esterification to obtain cellulose carbamate;

[0070] C, the preparation of cellulose carbamate solution

[0071] Add cellulose carbamate to the solution of sodium hydroxide and aluminum oxide, freeze and react at -5°C for 3 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;

[0072] D. Spinning

[0073] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinn...

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Abstract

The invention relates to a production method of a cellulose carbamate filament yarn, and belongs to the technical field of production of cellulose carbamate fiber. Through activation of specific cellulose, preparation of cellulose carbamate, and preparation of cellulose carbamate solution, and a spinning step, a complete production process of the cellulose carbamate filament yarn with high completion degree is formed; the prepared raw spinning liquid has good spinning property and final product performance, and is very suitable for the large-scale industrial production, and further gives consideration to production cost, production efficiency and product quality.

Description

technical field [0001] The invention relates to a production method of regenerated cellulose fibers, more specifically, the invention relates to a production method 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 process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/28D01F1/10C08B15/06
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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