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A kind of flame retardant polyamide fiber and preparation method thereof

A flame-retardant polyamide, polyamide technology, applied in the manufacture of fire-resistant flame-retardant filaments, fiber treatment, conjugated synthetic polymer artificial filaments, etc., can solve poor spinnability, difficult industrial applications, mechanical properties and flame-retardant Performance can not be taken into account and other issues, to achieve the effect of low cost, less addition, no melt dripping flame retardant performance

Active Publication Date: 2022-07-08
上海力道新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art that the mechanical properties and flame retardant properties of the blended flame retardant polyamide fiber cannot be balanced, and the spinnability is poor so that it is difficult to apply industrially, and to provide a flame retardant polyamide fiber and its preparation method

Method used

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  • A kind of flame retardant polyamide fiber and preparation method thereof
  • A kind of flame retardant polyamide fiber and preparation method thereof
  • A kind of flame retardant polyamide fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of flame retardant polyamide fiber, the specific process is as follows:

[0032] (1) 94 parts of nylon 6, 3.5 parts of melamine cyanurate, 0.5 parts of graphite-like carbon nitride, 0.5 parts of zinc sulfide and 1.5 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene -10-oxide derivatives are melt-blended to obtain flame-retardant polyamide chips, wherein the temperature of melt-blending is 270°C, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxidation The structural formula of the derivative is:

[0033]

[0034] (2) Dry and pre-crystallize the flame retardant polyamide chips. The process is as follows: first, the temperature is raised from 20°C to 65°C within 0.75h, and the temperature is kept for 6h. Continue to heat up to 115°C within 0.68h, keep for 12h, and finally cool down to 60°C within 0.56h;

[0035] (3) melt-spinning and drawing and winding the polyamide chips processed in step (2) to obtain flame-retardant polyamide fibers; the tempe...

Embodiment 2

[0038] A preparation method of flame retardant polyamide fiber, its specific process is as follows:

[0039] (1) 92 parts of nylon 66, 5 parts of melamine cyanurate, 0.5 parts of graphite-like carbon nitride, 0.5 parts of zinc diethylphosphinate and 2 parts of 9,10-dihydro-9-oxa- 10-phosphaphenanthrene-10-oxide derivatives are melt-blended to prepare flame-retardant polyamide chips, wherein the temperature of melt-blending is 260° C., 9,10-dihydro-9-oxa-10-phospha The structural formula of the phenanthrene-10-oxide derivative is:

[0040]

[0041] (2) Dry and pre-crystallize the flame retardant polyamide chips. The process is as follows: firstly, the temperature is raised from 15°C to 50°C within 0.5h, and the temperature is kept for 10h. Continue to heat up to 110°C within 0.5h, keep for 15h, and finally cool down to 50°C within 0.5h;

[0042] (3) melt-spinning and drawing and winding the polyamide chips processed in step (2) to obtain flame-retardant polyamide fibers; t...

Embodiment 3

[0045] A preparation method of flame retardant polyamide fiber, its specific process is as follows:

[0046] (1) 95.5 parts of nylon 56, 3 parts of melamine cyanurate, 0.4 parts of graphitic carbon nitride, 0.4 parts of zinc 2-carboxyethylphenylphosphinate and 1.7 parts of 9,10-dihydro-9 -Oxa-10-phosphaphenanthrene-10-oxide derivatives are melt-blended to obtain flame-retardant polyamide chips, wherein the temperature of melt-blending is 280°C, 9,10-dihydro-9-oxa- The structural formula of 10-phosphaphenanthrene-10-oxide derivatives is:

[0047]

[0048] (2) Dry and pre-crystallize the flame-retardant polyamide chips. The process is: first, the temperature is raised from 25 °C to 80 °C within 1 hour, and the temperature is kept for 5 hours. Continue to heat up to 120°C, keep for 8h, and finally cool down to 80°C within 1h;

[0049] (3) melt-spinning and drawing and winding the polyamide chips processed in step (2) to obtain flame-retardant polyamide fibers; the temperatur...

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Abstract

The invention relates to a flame-retardant polyamide fiber and a preparation method thereof. The preparation method comprises the following steps: mixing polyamide, melamine cyanurate, graphite-like carbon nitride, zinc compound and 9,10-dihydro-9-oxa -10-Phosphaphenanthrene-10-Oxide (DOPO) derivatives are melt-blended to obtain flame-retardant polyamide chips, and then melt-spun and drawn and wound or sheath-core composite spinning is used to obtain flame-retardant polyamide chips. The amide is the skin layer, and the polyamide is the core layer, which is melt-spun and drawn and wound; the material of the prepared flame-retardant polyamide fiber is flame-retardant polyamide, and the flame-retardant polyamide is mainly composed of 92-96.8 parts by mass. Polyamide, 2-5 parts of melamine cyanurate, 0.1-0.5 parts of graphite-like carbon nitride, 0.1-0.5 parts of zinc compounds and 1-2 parts of DOPO derivatives. The preparation process of the invention is simple, the added amount of the flame retardant in the prepared product is low, and both the mechanical properties and the flame retardant properties are good.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant fibers, and relates to a flame-retardant polyamide fiber and a preparation method thereof. Background technique [0002] Polyamide fibers are widely used in home textiles, apparel and industrial rope nets. In these fields, the flame retardant properties of products have been paid more and more attention, and the development of a flame retardant polyamide fiber with easy industrial production and good mechanical properties has become the trend of industry development. [0003] Polyamide fiber flame retardant currently mainly adopts two technical routes: one is the post-finishing method, and the other is the flame retardant blending method. Finishing method Flame retardant fibers are not washable, and the flame retardant properties are easy to lose. In production, it generally needs to go through processes such as grafting, rolling and baking, coating, spraying, etc. The process is long, en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/12D01F1/07D01D5/34
CPCD01F8/12D01F1/07D01D5/34
Inventor 彭治汉郭承鑫余小伟彭志宏陈龙
Owner 上海力道新材料科技股份有限公司
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