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Acetate fiber and preparation method thereof

A cellulose acetate and fiber technology, applied in the field of fiber materials, can solve the problems of poor hygroscopicity of acrylic fibers, low strength of pure acetate fibers, poor wearability, etc., and achieves the effects of good moisture regain, low strength improvement, and easy control.

Active Publication Date: 2015-10-28
河北艾科瑞纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first object of the present invention is to provide a kind of acetonitrile fiber, to improve the defects of poor hygroscopicity and easy to generate static electricity of acrylic fiber; at the same time, improve the disadvantages of low strength and poor wearability of pure acetate fiber

Method used

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  • Acetate fiber and preparation method thereof
  • Acetate fiber and preparation method thereof
  • Acetate fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1, the preparation of acetonitrile fiber

[0057] 1) Polymer production: Mix 92wt% acrylonitrile and 8wt% vinyl acetate, adjust the mixed concentration to 30-40wt%, and continue at 58-62°C and pH 2.5-3.5 Carry out aqueous phase suspension polymerization reaction; the reacted polymer is terminated by chelation reaction, the unreacted monomer is removed by a stripper, and then the salt and water are removed by washing and filtering, and the powdery polymer is obtained by drying after granulation. Acrylonitrile;

[0058] 2) The sum of powdered polyacrylonitrile, cellulose acetate and solvent dimethylacetamide by mass of powdered polyacrylonitrile and cellulose acetate (85wt%: 15wt%) and dimethylacetamide by mass 20wt%: 80wt % ratio mixing, heating up to 80°C to completely dissolve polyacrylonitrile and cellulose acetate in the solvent dimethylacetamide, then cooling down to 70°C for filtration to obtain spinning dope;

[0059] 3) The spinning stock solution is...

Embodiment 2

[0060] Embodiment 2, the preparation of acetonitrile fiber

[0061] 1) Polymer production: Mix 94wt% acrylonitrile and 6wt% vinyl acetate, adjust the mixed concentration to 30-40wt%, and continue at 58-62°C and pH 2.5-3.5 Carry out aqueous phase suspension polymerization reaction; the reacted polymer is terminated by chelation reaction, the unreacted monomer is removed by a stripper, and then the salt and water are removed by washing and filtering, and the powdery polymer is obtained by drying after granulation. Acrylonitrile;

[0062] 2) Combine powdery polyacrylonitrile, cellulose acetate and solvent dimethylacetamide by mass 23wt%: 77wt of powdered polyacrylonitrile and cellulose acetate (80wt%: 20wt%) % ratio mixing, heating up to 80°C to completely dissolve polyacrylonitrile and cellulose acetate in the solvent dimethylacetamide, then cooling down to 70°C for filtration to obtain spinning dope;

[0063] 3) The spinning stock solution is then spun at a pressure of 0.7-0....

Embodiment 3

[0064] Embodiment 3, the preparation of acetonitrile fiber

[0065] 1) Polymer production: Mix 93wt% acrylonitrile and 7wt% vinyl acetate, adjust the mixed concentration to 30-40wt%, and continue at 58-62°C and pH 2.5-3.5 Carry out aqueous phase suspension polymerization reaction; the reacted polymer is terminated by chelation reaction, the unreacted monomer is removed by a stripper, and then the salt and water are removed by washing and filtering, and the powdery polymer is obtained by drying after granulation. Acrylonitrile;

[0066] 2) The sum of powdered polyacrylonitrile, cellulose acetate and solvent dimethylacetamide by weight of powdered polyacrylonitrile and cellulose acetate (75wt%: 25wt%) and dimethylacetamide by mass 25.5wt%: Mix at a ratio of 74.5 wt%, and heat up to 80°C to completely dissolve polyacrylonitrile and cellulose acetate in the solvent dimethylacetamide, then cool down to 70°C and filter to obtain a spinning stock solution;

[0067] 3) The spinning ...

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Abstract

The invention relates to a fiber material, in particular to an acetate fiber and a preparation method thereof. The acetate fiber is composed of polyacrylonitrile and cellulose acetate. The mass ratio of the cellulose acetate to the polyacrylonitrile is an arbitrary ratio, preferentially, the ratio is 15-35 wt%:65-85 wt%, and more preferentially, the ratio is 15-30 wt%:70-85 wt%. The acetate fiber has the advantages that the defects that the acrylic fiber is bad in hygroscopicity, and static electricity is easily generated are overcome; the defects that the pure acetate fiber is low in strength and bad in serviceability are overcome; at the same time, the combination property of the acetate fiber is good.

Description

technical field [0001] The invention relates to a fiber material, in particular to an acetonitrile fiber and a preparation method thereof. Background technique [0002] Acrylic fiber is one of the main varieties of synthetic fibers in the world. It is soft to the touch, bright in color, relatively good in strength and elasticity, and has the reputation of "artificial wool". However, the acrylic fiber macromolecule is in an irregular helical conformation and does not have a real crystalline structure. The strength of the fiber is much higher than that of natural fibers and recycled fibers, and it has good acid resistance and weather resistance; and because the raw material polyacrylonitrile (PAN) Containing a large number of hydrophobic groups, acrylic fibers have poor hygroscopicity and are prone to static electricity. Static electricity will cause fibers to entangle or block the machine parts, affecting the smooth progress of the weaving process; the accumulation of static...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/08D01F8/02D01D5/06
CPCD01D5/06D01F6/54D01F8/02
Inventor 张海鸥邵宝忠杨立杰陈卫郝东文刘海亮郝朋林段志国国桂荣宋德武杨雪峰刘明哲白桦
Owner 河北艾科瑞纤维有限公司
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