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Production process of anti-pilling dry-process acrylic fibers

A dry-process acrylic fiber and production process technology, applied in the chemical characteristics of fibers, drawing spinning, heat treatment of artificial filaments, etc., can solve the problems of high production risks of polymer modification, high production organization and consumption, and difficulty in output control, etc. problem, to achieve the effect of good spinnability of raw materials, strong covering ability, and normal yarn coloring

Active Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first two methods belong to polymer modification, and the production risk of polymer modification is high, and due to the difficulty of output control and the high production organization and consumption caused by variety switching, resulting in an increase in cost

Method used

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  • Production process of anti-pilling dry-process acrylic fibers
  • Production process of anti-pilling dry-process acrylic fibers
  • Production process of anti-pilling dry-process acrylic fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] combined with figure 2 The technical process: 1) according to the mass percentage that acrylonitrile accounts for 93.5%, the mass percentage that methyl acrylate accounts for is 6%, the mass percentage that styrene sodium sulfonate accounts for is 0.5%, carry out polymerization reaction after batching, get the polymer;

[0024] 2) The polymer obtained by polymerization is subjected to primary filtration, secondary filtration, polymer drying, stock solution preparation, stock solution filtration, spinning, washing and drawing tow drying, tow barreling, and tow packaging;

[0025] 3) The dry-laid acrylic tow is drawn twice by means of seven-roll drafting. The seven-roll drafting includes a cold roll drafting machine with a speed of 25m / min, and a second draft machine with a speed of 40m / min and a temperature of 140°C. A hot roll stretching machine and a second hot roll stretching machine with a speed of 35m / min and a temperature of 140°C; the draft ratio between the col...

Embodiment 2

[0030] combined with figure 2The technological process: 1) according to the mass percentage that acrylonitrile accounts for 93.6%, the mass percentage that methyl acrylate accounts for is 5.0%, the mass percentage that styrene sodium sulfonate accounts for is 0.4%, carry out polymerization reaction after batching, get the polymer;

[0031] 2) The polymer obtained by polymerization is subjected to primary filtration, secondary filtration, polymer drying, stock solution preparation, stock solution filtration, spinning, washing and drawing tow drying, tow barreling, and tow packaging;

[0032] 3) The dry-laid acrylic tow is drawn twice by means of seven-roll drafting. The seven-roll drafting includes a cold roll drafting machine with a speed of 30m / min, and a second draft machine with a speed of 45m / min and a temperature of 135°C. A hot roll stretching machine and a second hot roll stretching machine with a speed of 50m / min and a temperature of 135°C; the draft ratio between th...

Embodiment 3

[0037] combined with figure 2 The technical process: 1) according to the mass percentage that acrylonitrile accounts for 93%, the mass percentage that methyl acrylate accounts for is 6.3%, the mass percentage that styrene sodium sulfonate accounts for is 0.7%, carry out polymerization reaction after batching, get the polymer;

[0038] 2) The polymer obtained by polymerization is subjected to primary filtration, secondary filtration, polymer drying, stock solution preparation, stock solution filtration, spinning, washing and drawing tow drying, tow barreling, and tow packaging;

[0039] 3) The dry-laid acrylic tow is drawn twice by means of seven-roll drafting. The seven-roll drafting includes a cold roll drafting machine with a speed of 35m / min, and a second draft machine with a speed of 50m / min and a temperature of 142°C. A hot roll stretching machine and a second hot roll stretching machine with a speed of 60m / min and a temperature of 142°C; the draft ratio between the col...

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Abstract

The invention relates to a production process of anti-pilling dry-process acrylic fibers and belongs to the technical field of dry-process acrylic fibers. The production process is characterized in that dry-process acrylic fiber tows after drying are drafted by a seven-roll drafting device, and the drafted dry-process acrylic fiber tows are subjected to tension heat setting at 130 DEG C to 160 DEGC and then are subjected to relaxation heat setting in 0.10 MPa to 0.16 MPa steam for 1 min to 3 mins to obtain the dry-process acrylic fibers. By using a seven-roll drafting method, selecting a suitable drafting multiple and adjusting the fiber drafting, heat setting process and equipment, the product of the knotting strength and knotting elongation of the fibers is <=35, and the boiling water shrinkage of the fibers is <4. %. The products of the production process achieve an anti-pilling effect, are adapted to the needs of the market, greatly increase the added value of dry-process acrylicfibers, and promote the entry of dry-process acrylic fibers into high-grade textile products.

Description

technical field [0001] The invention discloses a production process of dry-process acrylic fiber anti-pilling fiber, which belongs to the technical field of dry-process acrylic fiber. Background technique [0002] Acrylic fiber is an important raw material for textile processing. With my country's accession to the World Trade Organization and the continuous development of science and technology, domestic and foreign market competition has become increasingly fierce, and acrylic fiber products have undergone tremendous changes in terms of variety, specification, processing technology, and performance style. Since 2008, the annual import volume of acrylic fibers has remained at 180,000 to 190,000 tons, and more than 60% of them are high value-added products. Acrylic fiber has become one of the few industries with high import dependence among chemical fiber products in my country, and it is the only product among the major varieties of chemical fiber that has not achieved net ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/16D01D10/02D01F6/38D02G1/12
CPCD01D5/16D01D10/02D01F6/38D02G1/12
Inventor 李胸有贾克英孙常山成强李志强吴连强孙华田王清于建军张亮
Owner CHINA PETROLEUM & CHEM CORP
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