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Method for preparing high strength cellulose and silicat composite fibre and prepared composite fibre

A silica and composite fiber technology, applied in the direction of wet spinning, etc., can solve the problems of uneven distribution of silicon in the fiber, poor physical and mechanical properties of the fiber, and limitation of the application range of the fiber, and achieve uniform distribution, low loss, and physical The effect of excellent mechanical properties

Inactive Publication Date: 2007-12-19
CHTC HELON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the oligomer of silicic acid dissolves in the coagulation bath, and reacts with the components in the coagulation bath to cause uneven distribution of silicon in the fiber, so the physical and mechanical properties of the final fiber obtained by this method are poor, and the fiber is strong Low density, its application is limited to some specific fields, such as non-woven fabrics, etc., it is difficult to process textile processes such as spinning and weaving, which greatly limits the application range of this fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Cellulose xanthate is prepared by mixing cotton pulp and wood pulp with a polymerization degree of 811 and an α-cellulose content of 97.3% through alkali staining, pressing, crushing, and yellowing, and then using cellulose xanthate Ester, silicon dioxide (in the form of sodium silicate), sodium hydroxide and water are mixed to prepare blended viscose, and its component content (percentage by weight) is respectively: α-cellulose 8.0%, silicon dioxide 18% (for α-cellulose), sodium hydroxide 10.5%, the balance is water, mix well and dissolve, add denaturant V315 during the dissolution process, the addition amount is 2.5% (for α-cellulose), and mature , filtration, defoaming and other steps to obtain a blended spinning stock solution with a degree of esterification of 75, and the above spinning stock solution is entered into a 90g / lH 2 SO 4 , 60g / lZnSO 4 , 180g / lNa 2 SO 4 Composition, in a coagulation bath with a temperature of 35°C, silica and cellulose xanthate are c...

Embodiment 2

[0016] Using cotton pulp with a degree of polymerization of 550 and an α-cellulose content of 97.5%, cellulose xanthate was prepared through steps such as alkali staining, pressing, crushing, and yellowing, and then cellulose xanthate was prepared by using cellulose xanthate, two Silicon oxide, sodium hydroxide and water are made into colloidal solution through blending, and its component content (percentage by weight) is respectively: α-cellulose 5.0%, silicon dioxide (in the form of potassium silicate) 60% (to α -cellulose), sodium hydroxide 10.5%, the balance is water, mix well and dissolve, add denaturant V318 in the dissolution process, the addition is 1.5% (to α-cellulose), and through aging, filtration, Steps such as defoaming make the blending spinning stock solution that degree of esterification is 68, with above-mentioned spinning stock solution, enter by 90g / lH 2 SO 4 , 35g / lZnSO 4 , 190g / lNa 2 SO 4 Composition, in a coagulation bath with a temperature of 45°C, ...

Embodiment 3

[0018] Using wood pulp with a polymerization degree of 911 and an α-cellulose content of 98.5%, the cellulose xanthate is prepared through steps such as alkali staining, pressing, crushing, and yellowing, and then the cellulose xanthate is prepared by using cellulose xanthate, di Silicon oxide, sodium hydroxide and water are made into colloidal solution through blending, and its component content (percentage by weight) is respectively: α-cellulose 7.0%, silicon dioxide 40% (to α-cellulose), sodium hydroxide 10.8%, the balance is water, mix well and dissolve, add denaturant V315 during the dissolution process, the addition amount is 2.0% (for α-cellulose), and obtain esterification through aging, filtration, defoaming and other steps Degree is the blended spinning stock solution of 65, the above-mentioned spinning stock solution, enters by 60g / lH 2 SO 4 , 25g / lZnSO 4 , 130g / lNa 2 SO 4Composition, in a coagulation bath with a temperature of 35°C, silica and cellulose xanthat...

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PUM

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Abstract

The present invention discloses a method for preparing high-tenacity cellulose and silica composite fiber and its prepared composite fiber. Said method includes the following steps: adopting cellulose to prepare cellulose xanthate, then adopting cellulose xanthate, silica, sodium hydroxide and water and uniformly mixing them to obtain polyblend viscose whose composition contains (by wt%) 5.0%-8.2%% of alpha-cellulose, 18%-60% of silica, 9.0%-11.0% of sodium hydroxide and the rest is water, dissolving to obtain polyblend spinning solution, then wet spinning so as to obtain the invented high-tenacity composite fiber containing cellulose and silica.

Description

technical field [0001] The invention relates to a method for preparing a composite fiber, in particular to a method for preparing a high-strength composite fiber by using cellulose and silicon dioxide, and the composite fiber prepared by the method. Background technique: [0002] Cellulose fiber is widely used in people's social life at present, and it is a good substitute for cotton, and due to the unlimited resources of cellulose, it is a must for people to make full use of this rich resource to develop the cellulose industry. an urgent need. [0003] With the gradual promotion of the application of cellulose, the production of modified and functionalized cellulose fibers has become the main direction of people's development and application of cellulose. For example, people currently apply silicate to cellulose production. Flame-retardant fiber is a kind of functional cellulose fiber. The flame-retardant fiber produced can greatly improve the heat-resistant and flame-reta...

Claims

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Application Information

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IPC IPC(8): D01F2/10C08B9/00D01D5/06
Inventor 王乐军刘海洋刘建华马君志卢海蛟
Owner CHTC HELON
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