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Flame-retardant polyamide fiber and preparation method thereof

A flame-retardant polyamide and polyamide technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, fiber processing, and conjugated synthetic polymer man-made filaments, etc., can solve the problem of poor spinnability, difficult industrial application, mechanical properties and flame Performance can not be taken into account and other problems, to achieve the effect of increasing the surface area, reducing the dosage, and improving the spinnability and mechanical properties

Active Publication Date: 2020-03-27
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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  • Flame-retardant polyamide fiber and preparation method thereof
  • Flame-retardant polyamide fiber and preparation method thereof
  • Flame-retardant polyamide fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A kind of preparation method of flame-retardant polyamide fiber, its 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 were melt-blended to prepare flame-retardant polyamide chips, wherein the melt-blending temperature was 270°C, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxidized The structural formula of the derivative is:

[0033]

[0034] (2) Dry and pre-crystallize the flame-retardant polyamide slices. The process is: firstly raise the temperature from 20°C to 65°C within 0.75h, keep it warm for 6h, then continue to heat up to 95°C within 0.75h, keep it warm for 6h, and then Continue to heat up to 115°C within 0.68h, keep warm for 12h, and finally cool down to 60°C within 0.56h;

[0035] (3) melt-spinning and drawing-winding are carried out to the polyamide c...

Embodiment 2

[0038] A kind of 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 were melt-blended to prepare flame-retardant polyamide chips, wherein the melt-blending temperature was 260°C, The structural formula of phenanthrene-10-oxide derivatives is:

[0040]

[0041] (2) Dry and pre-crystallize the flame-retardant polyamide slices. The process is: firstly raise the temperature from 15°C to 50°C within 0.5h, keep it warm for 10h, then continue to heat up to 90°C within 0.5h, keep it warm for 8h, and then Continue to heat up to 110°C within 0.5h, keep warm for 15h, and finally cool down to 50°C within 0.5h;

[0042] (3) melt-spinning and drawing-winding are carried out to the processed polyamide chip of step (2) to make ...

Embodiment 3

[0045] A kind of 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 graphite-like carbon nitride, 0.4 parts of 2-carboxyethylphenyl phosphinate zinc and 1.7 parts of 9,10-dihydro-9 -Oxa-10-phosphaphenanthrene-10-oxide derivatives are melt-blended to prepare flame-retardant polyamide chips, wherein the melt-blending temperature is 280°C, and 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 slices. The process is: firstly raise the temperature from 25°C to 80°C within 1h, keep it warm for 5h, then continue to heat up to 100°C within 1h, keep it warm for 4h, and then within 1h Continue to heat up to 120°C, keep warm for 8h, and finally cool down to 80°C within 1h;

[0049] (3) carry out melt spinning and draft winding to the polyamide ch...

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Abstract

The invention relates to a flame-retardant polyamide fiber and a preparation method thereof. The preparation method comprises the steps of performing melt blending on polyamide, melamine cyanurate, graphite-like carbon nitride, a zinc compound and a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) derivative to prepare a flame-retardant polyamide slice, performing melt spinning and drafting winding or adopting a skin-core composite spinning method, and by taking flame-retardant polyamide as a skin layer and the polyamide as a core layer, performing melt spinning and drafting winding,wherein the prepared flame-retardant polyamide fiber is made from the flame-retardant polyamide, and in parts by mass, the flame-retardant polyamide is mainly composed of 92-96.8 parts of the polyamide, 2-5 parts of the melamine cyanurate, 0.1-0.5 parts of the graphite-like carbon nitride, 0.1-0.5 parts of the zinc compound and 1-2 parts of the DOPO derivative. The preparation process is simple, and the prepared flame-retardant polyamide fiber is low in flame retardant addition amount and has the relatively good mechanical property and flame retardant property.

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 the fields of home textiles, apparel and industrial rope nets. In these fields, the flame retardant performance of products has been paid more and more attention, and the development of a flame retardant polyamide fiber that is easy for industrial production and has good mechanical properties has become the development trend of the industry. [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. Generally, grafting, rolling, baking, coating, spraying and other processes are required in production. The proces...

Claims

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Application Information

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Patent Type & Authority Applications(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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