A kind of pre-oxygenated filament core-spun yarn and its manufacturing method

A manufacturing method and technology of pre-oxidized yarn, which is applied in the direction of yarn, textile and papermaking, conjugated synthetic polymer artificial filament, etc., can solve the problems of low mechanical strength of pre-oxidized yarn, less application of pre-oxidized yarn, and not suitable for skin contact, etc. , to achieve excellent heat insulation effect, excellent thermal stability, improved wear resistance and wearability

Active Publication Date: 2022-07-05
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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  • A kind of pre-oxygenated filament core-spun yarn and its manufacturing method
  • A kind of pre-oxygenated filament core-spun yarn and its manufacturing method
  • A kind of pre-oxygenated filament core-spun yarn and its manufacturing method

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Embodiment 1

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

[0033] S1. Put 5kg of common polyacrylonitrile resin with isotacticity of 20% and 2kg of high-grade polyacrylonitrile resin with isotacticity of 45% into a high-speed mixer for stirring and mixing for 10 hours to obtain a mixed resin.

[0034] S2, add 5kg of the above mixed resin and 12kg of dimethylformamide into the reaction kettle, and control the temperature of the reaction kettle to rise to 200°C at a uniform speed within 2h, so that the mixed resin and dimethylformamide are at a constant temperature of 200°C After 4 hours of continuous stirring and mixing under the conditions, the reaction kettle is vacuumed and debubble, and then the mixed materials are filtered to obtain the spinning dope.

[0035] S3, first use the dry and wet spinning technology to process the spinning dope through the screw extruder, t...

Embodiment 2

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

[0040] S1. Put 5kg of common polyacrylonitrile resin with isotacticity of 10% and 4kg of high-grade polyacrylonitrile resin with isotacticity of 55% into a high-speed mixer for stirring and mixing for 10 hours to obtain a mixed resin.

[0041] S2, add 5kg of above-mentioned mixed resin and 15kg of dimethylformamide to the reaction kettle, and control the temperature of the reaction kettle to rise to 250°C at a uniform speed in 2h, so that the mixed resin and dimethylformamide are at a constant temperature of 250°C After 4 hours of continuous stirring and mixing under the conditions, the reaction kettle is vacuumed and debubble, and then the mixed materials are filtered to obtain the spinning dope.

[0042] S3, first use the dry and wet spinning technology to process the spinning dope through the screw extruder, t...

Embodiment 3

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

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

[0048] S2, add 5kg of the above mixed resin and 12kg of dimethylformamide into the reaction kettle, and control the temperature of the reaction kettle to rise to 200°C at a uniform speed within 2h, so that the mixed resin and dimethylformamide are at a constant temperature of 200°C After 4 hours of continuous stirring and mixing under the conditions, the reaction kettle is vacuumed and debubble, and then the mixed materials are filtered to obtain the spinning dope.

[0049] S3, first use the dry and wet spinning technology to process the spinning dope through the screw extruder, th...

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Abstract

The invention discloses a pre-oxidized silk core-spun yarn and a manufacturing method thereof, belonging to the technical field of textiles. The manufacturing method of the pre-oxygenated filament core-spun yarn comprises the following steps: mixing common polyacrylonitrile resin and high-tacticity polyacrylonitrile resin to obtain a mixed resin; placing the mixed resin and dimethylformamide under high temperature conditions to carry out After mixing, filtering is carried out to obtain a spinning dope; first, the spinning dope is processed into primary fibers, and pre-oxidation treatment and spinning are carried out in sequence to obtain pre-oxidized filaments; After sizing pretreatment, the filaments are dried; finally, the dried pre-oxidized filaments are wrapped with short fiber rovings, and twisted and desizing are performed in turn to obtain the pre-oxidized filament core-spun yarn. The pre-oxygenated core-spun yarn obtained by the invention not only has high flame retardancy and excellent thermal stability, but also has high 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-oxygenated core-spun yarn and a manufacturing method thereof. Background technique [0002] Pre-oxidized fiber refers to a black fiber with a partially cyclic structure formed by carbon-containing organic fiber precursor under high temperature pre-oxidation in an air medium. It has the characteristics of melting, no dripping, and environmental protection. [0003] However, although the pre-oxygen wire 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 the pre-oxygen wire, it is easy to break and break, and it is not suitable for contact with the skin. Therefore, the pre-oxygen wire is currently used in the field of consumption. less applications. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a pre-oxygenated core-spun yarn and a manufacturing me...

Claims

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Application Information

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Patent Type & Authority Patents(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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