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A high-strength flame-retardant and high-temperature-resistant polyimide yarn and its preparation method

A technology of polyimide yarn and high temperature resistant type, which is applied in the field of high-strength flame-retardant and high-temperature resistant polyimide yarn and its preparation, which can solve the problems of increasing the difficulty of fabric preparation, uneven adhesion of treatment agents, and uniform yarn Poor performance and other problems, to achieve the effect of reducing hairiness, high temperature resistance, excellent flame retardant performance

Active Publication Date: 2021-01-01
JIANGSU XIANNUO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual operation process, it is found that if the treatment agent is only sprayed before pretreatment, the treatment agent will adhere unevenly on the surface of the yarn, and the uniformity of the prepared yarn will be poor, increasing the difficulty of fabric preparation, and the yield of the fabric is also low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A high-strength flame-retardant and high-temperature-resistant polyimide yarn and its preparation method
  • A high-strength flame-retardant and high-temperature-resistant polyimide yarn and its preparation method
  • A high-strength flame-retardant and high-temperature-resistant polyimide yarn and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A high-strength flame-retardant and high-temperature-resistant polyimide yarn and a preparation method thereof, comprising the following steps:

[0033] a. Conventional polyimide chopped fiber, ultra-high temperature resistant polyimide chopped fiber, meta-aramid chopped fiber, aramid fiber surface metallized conductive fiber are mixed in a weight ratio of 50:25:10:5 Finally, use the mixed solution of antistatic agent F695 and water, the mass ratio is 1:20 to carry out pretreatment, after processing, let it stand for 24h;

[0034] b. Cotton cleaning-carding-drawing-roving;

[0035] c. spun yarn is made from roving, while 10% fine denier, high-strength and high-modulus polyimide fiber (≥20.8cN / dtex) is twisted and wound with spun yarn at the front jaw of the spinning frame to prepare core-spun yarn;

[0036] d. The polyimide yarn prepared in step c is treated with 1.5wt% silicone water-based emulsion after sizing, dried, heat-set twist, and wound into a yarn to obtain a...

Embodiment 2

[0038] The post-treatment agent is a mixed aqueous emulsion of polyvinyl alcohol and silicone, wherein the molar ratio of polyvinyl alcohol to silicone is 5:1, and the others are the same as in Example 1.

Embodiment 3

[0040] The post-treatment agent is a mixed aqueous emulsion of polyvinyl alcohol and silicone, wherein the molar ratio of polyvinyl alcohol to silicone is 8:1, and the others are the same as in Example 1.

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Abstract

Disclosed are a high-strength, flame-retardant and high-temperature-resistant polyimide yarn and a manufacturing method thereof. The manufacturing method includes the following steps: (a) pre-treating polyimide chopped mixed fibers; (b) carrying out opening and picking, carding, drawing and roving; (c) directly preparing rove into a spun yarn, or twisting and winding the spun yarn and a fine-denier high-strength high-modulus polyimide fiber at a front jaw of a spinning frame into a core spun yarn; (d) sizing the prepared polyimide yarn for post-treatment. The prepared polyimide yarn has low hairiness, excellent mechanical properties and high flame retardancy, and the temperature can exceed 350 DEG C after long-term use.

Description

technical field [0001] The invention belongs to the field of textiles, and in particular relates to a high-strength flame-retardant and high-temperature-resistant polyimide yarn and a preparation method thereof. [0002] technical background [0003] With the advancement of science and technology, the number of flammable and explosive products has increased significantly, and the use of flammable and explosive products has also increased significantly. The danger of storing flammable and explosive products has also become higher and higher. The fire is extremely dangerous, the burning intensity of the fire is high and the duration is long, and the temperature of the fire is getting higher and higher. Ordinary rescue flame-retardant protective clothing is increasingly unable to meet the requirements of use. Therefore, it is imperative to develop more high-end flame-retardant protective clothing. , and the flame-retardant and high-temperature-resistant protective yarn has becom...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D02G3/44
CPCD02G3/04D02G3/441D02G3/443D10B2201/24D10B2331/021D10B2331/14D10B2401/063
Inventor 曾勇要韩恩林牛鸿庆武德珍
Owner JIANGSU XIANNUO NEW MATERIAL TECH
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