Pre-oxidized fiber core spun yarn and manufacturing method thereof

A manufacturing method and technology of pre-oxygenated filaments, which are applied in the directions of yarn, textile and papermaking, conjugated synthetic polymer rayon, etc., can solve the problems of low mechanical strength of preoxygenated filaments, less application of preoxygenated filaments, and unsuitable skin contact. , to achieve excellent thermal insulation effect, suitable textile processing performance, improve wear resistance and wearability

Active Publication Date: 2019-11-15
义乌市恒达织带有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although pre-oxidized silk has many advantages of carbon fiber products, and the cost is much lower than that of carbon fiber, due to the low mechanical strength of pre-oxidized silk, it is easy to break and break, and it is not suitable for contact with the skin. fewer applications

Method used

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  • Pre-oxidized fiber core spun yarn and manufacturing method thereof
  • Pre-oxidized fiber core spun yarn and manufacturing method thereof
  • Pre-oxidized fiber core spun yarn and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Refer to attached Figure 1-3 , this embodiment provides a kind of manufacture method of pre-oxidized silk core-spun yarn, comprises the following steps:

[0033] S1. Put 5 kg of ordinary polyacrylonitrile resin with an isotacticity of 20% and 2 kg of high isotactic polyacrylonitrile resin with 45% isotacticity into a high-speed mixer and stir and mix for 10 hours to obtain a mixed resin.

[0034] S2. Add 5kg of the above-mentioned mixed resin and 12kg of dimethylformamide into the reactor, and control the temperature of the reactor to rise to 200°C at a constant speed within 2 hours, so that the mixed resin and dimethylformamide are kept at a constant temperature of 200°C After continuous stirring and mixing for 4 hours under the same conditions, the reaction kettle is vacuumed and degassed, and then the mixed materials are filtered to obtain the spinning stock solution.

[0035] S3. First use the dry-wet spinning technology to process the spinning stock solution thro...

Embodiment 2

[0039] Refer to attached Figure 1-3 , this embodiment provides a kind of manufacture method of pre-oxidized silk core-spun yarn, comprises the following steps:

[0040] S1. Put 5 kg of ordinary polyacrylonitrile resin with an isotacticity of 10% and 4 kg of high isotactic polyacrylonitrile resin with a isotacticity of 55% into a high-speed mixer and mix for 10 hours to obtain a mixed resin.

[0041] S2. Add 5kg of the above mixed resin and 15kg of dimethylformamide into the reactor, and control the temperature of the reactor to rise to 250°C at a constant speed within 2 hours, so that the mixed resin and dimethylformamide are kept at a constant temperature of 250°C After continuous stirring and mixing for 4 hours under the same conditions, the reaction kettle is vacuumed and degassed, and then the mixed materials are filtered to obtain the spinning stock solution.

[0042] S3. First use the dry-wet spinning technology to process the spinning stock solution through the screw ...

Embodiment 3

[0046] Refer to attached Figure 1-3 , this embodiment provides a kind of manufacture method of pre-oxidized silk core-spun yarn, comprises the following steps:

[0047] S1. Putting 5 kg of ordinary polyacrylonitrile resin with an isotacticity of 5% and 3 kg of high isotactic polyacrylonitrile resin of 50% into a high-speed mixer and stirring and mixing for 10 hours to obtain a mixed resin.

[0048] S2. Add 5kg of the above-mentioned mixed resin and 12kg of dimethylformamide into the reactor, and control the temperature of the reactor to rise to 200°C at a constant speed within 2 hours, so that the mixed resin and dimethylformamide are kept at a constant temperature of 200°C After continuous stirring and mixing for 4 hours under the same conditions, the reaction kettle is vacuumed and degassed, and then the mixed materials are filtered to obtain the spinning stock solution.

[0049] S3. First use the dry and wet spinning technology to process the spinning stock solution throu...

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Abstract

The invention discloses a pre-oxidized fiber core spun yarn and a manufacturing method thereof, and belongs to the technical field of textiles. The manufacturing method of the pre-oxidized fiber corespun yarn comprises the following steps that common polyacrylonitrile resin is mixed with high-isotacticity polyacrylonitrile resin to obtain mixed resin; the mixed resin and dimethylformamide are placed under a high temperature condition for mixing, then filtration is carried out, and a spinning solution is obtained; firstly, the spinning solution is treated into a nascent fiber, and pre-oxidation treatment and spinning processing are performed in sequence to obtain a pre-oxidized filament; then, after a gelatin sizing agent is used for performing sizing pretreatment on the pre-oxidized filament, drying treatment is carried out; finally, a staple fiber rough yarn is used for wrapping the dried pre-oxidized filament, twisting and desizing are carried out in sequence, and the pre-oxidized fiber core spun yarn can be obtained. The obtained pre-oxidized fiber core spun yarn not only has high flame retardancy and excellent thermal stability, but also has higher mechanical strength and suitable textile processing performance.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a pre-oxidized silk core-spun yarn and a manufacturing method thereof. Background technique [0002] Pre-oxidized silk refers to the black fiber with partial cyclization structure formed by carbon-containing organic fiber precursor under high temperature pre-oxidation in air medium. It has fire prevention, flame retardancy, heat insulation, light weight, folding resistance, and Features such as melting shrinkage, no droplet, and environmental protection. [0003] However, although pre-oxidized silk has many advantages of carbon fiber products, and the cost is much lower than that of carbon fiber, due to the low mechanical strength of pre-oxidized silk, it is easy to break and break, and it is not suitable for contact with the skin. application is less. Contents of the invention [0004] The object of the present invention is to provide a pre-oxidized silk core-spun yarn and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/04D02G3/36D01F8/08D06M15/15D06M101/28
CPCD02G3/045D02G3/047D02G3/36D01F8/08D06M15/15D10B2331/021D10B2321/10D06M2101/28D06M2200/40
Inventor 竺铝涛方平钟俊杰
Owner 义乌市恒达织带有限公司
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