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Flame-retardant nylon composition and preparation method thereof

A technology of flame-retardant nylon and its composition, which is applied in the field of flame-retardant nylon composition and its preparation, can solve the problems of poor mechanical properties of flame-retardant PA66 resin, difficulty in balancing the flame-retardant and mechanical properties of flame-retardant nylon compositions, etc. Achieve good mechanical properties, good flame retardancy, and simple process

Active Publication Date: 2020-09-04
SHAOXING SIAN FLAME RETARDANT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the flame retardant PA66 resin are poor
[0010] All in all, it is difficult to balance the flame retardancy and mechanical properties of flame retardant nylon compositions obtained by most of the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Ingredients: Weigh 88wt% methylolated PA66 nylon resin; 4wt% poly N,N'-diphenyl-phenylphosphine oxide; 3.4wt% guanidine sulfamate; 4wt% nanometer γ-AlOOH; 0.4wt% N,N'-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hexamethylenediamine; 0.2wt% ethylene bisstearamide; PA66 nylon resin was first dried to The moisture content meets the processing requirements, and then it is uniformly mixed with other components to obtain a pre-blended nylon composition. Wherein, the methylolated PA66 nylon resin is obtained as follows: ordinary PA66 nylon resin is placed in a mixed solution of 85% phosphoric acid and formaldehyde, and reacted at 60°C for 18 hours; wherein, the 85% phosphoric acid and formaldehyde The volume ratio is 3:100.

[0034] Melt granulation: Feed the premixed nylon composition into a twin-screw extruder, melt and blend, extrude and granulate to obtain the product; the process parameters are as follows: the temperature in the first zone is 270°C; the temperatu...

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PUM

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Abstract

The invention discloses a preparation method of a flame-retardant nylon composition. The preparation method comprises the steps of burdening and melt granulation, wherein the premixed nylon composition is obtained in the burdening step; raw materials comprise nylon resin, a composite flame retardant and nano gamma-AlOOH. In addition, the invention also discloses the flame-retardant nylon composition obtained by the preparation method. The preparation method is simple in process, low in cost and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of textile materials and relates to a flame-retardant nylon composition and a preparation method thereof. Background technique [0002] Nylon, also known as polyamide, is a thermoplastic polymer containing repeating units of amide groups in the molecular backbone. The amide group repeating unit can be obtained by condensation of dibasic carboxylic acid and dibasic amine, or by ring opening of lactam. Nylon resin has good wear resistance, flexibility, dyeability and durability, and is widely used in clothing, stockings, apparel and industrial rope nets and other fields. [0003] The more commonly used nylon resins include PA6, PA56, PA66, PA11, PA12, PA610, PA612, PA1010, and PA1212. [0004] As a nylon resin, the main chain of the molecule often contains a large number of methylene structural units in addition to the repeating unit of the amide group. This causes nylon resins to burn easily, especially re...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L85/02C08K13/02C08K3/22C08K5/435C08G69/50
CPCC08L77/06C08G69/50C08L2201/02C08K2201/011C08K2003/2227C08L85/02C08K13/02C08K3/22C08K5/435
Inventor 陈海兴
Owner SHAOXING SIAN FLAME RETARDANT TECH CO LTD