A process of producing a cellulose carbamate fiber filament

A technology of carbamate and cellulose, applied in the field of producing regenerated cellulose fiber filaments and producing cellulose carbamate fiber filaments, can solve the problem that the process of cellulose carbamate fibers cannot adapt to large-scale industrialization Production and other issues, to achieve the effect of good spinnability, high mechanical strength, and production cost

Inactive Publication Date: 2017-05-10
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 process for producing 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

[0042] A process for producing cellulose urethane fiber filaments, comprising the following process steps:

[0043] A. Activation of cellulose

[0044] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;

[0045] B, the preparation of cellulose carbamate

[0046] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;

[0047] C, the preparation of cellulose carbamate solution

[0048] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -15°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;

[0049] D. Spinning

[0050] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.

[0051] The performance of the cellulose urethane fiber fil...

Embodiment 2

[0056] A process for producing cellulose urethane fiber filaments, comprising the following process steps:

[0057] A. Activation of cellulose

[0058] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;

[0059] B, the preparation of cellulose carbamate

[0060] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;

[0061] C, the preparation of cellulose carbamate solution

[0062] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -5°C for 6 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;

[0063] D. Spinning

[0064] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.

Embodiment 3

[0066] A process for producing cellulose urethane fiber filaments, comprising the following process steps:

[0067] A. Activation of cellulose

[0068] The cellulose is first soaked in sodium hydroxide solution to activate it, and then washed with water to obtain activated cellulose;

[0069] B, the preparation of cellulose carbamate

[0070] Adding urea and an inert solvent to the activated cellulose, and then heating it for esterification to obtain cellulose carbamate;

[0071] C, the preparation of cellulose carbamate solution

[0072] Add cellulose carbamate to the solution of sodium hydroxide and zinc oxide, freeze and react at -10°C for 4.5 hours, after the reaction is completed, raise it to room temperature to obtain the cellulose carbamate solution, that is, the spinning stock solution;

[0073] D. Spinning

[0074] The spinning dope in step C is made into cellulose urethane fiber filament by wet spinning.

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Abstract

The invention relates to a process of producing a cellulose carbamate fiber filament, and belongs to the technical field of cellulose carbamate fiber production. Through specific cellulose activation, cellulose carbamate preparation, cellulose carbamate solution preparation, and spinning steps, a complete cellulose carbamate fiber filament producing process having a high degree of completion is formed. A prepared spinning stock solution has good spinnability, a final product has good performance, the process is particularly suitable for industrial large-scale production, and the production cost, the production efficiency and product quality are all taken into account.

Description

technical field [0001] The invention relates to a process for producing regenerated cellulose fiber filaments, more specifically, the invention relates to a process for producing 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 spinn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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