Transparent flame-retardant high-temperature nylon and preparation method thereof

A high-temperature, nylon technology, applied in the field of transparent flame-retardant high-temperature nylon and its preparation, can solve the problems of reducing the processing fluidity and surface quality of products, the influence of high-temperature nylon optical and mechanical properties, etc., to solve the problems of poor optical and mechanical properties, adding Small amount, guaranteeing the effect of mechanical properties

Active Publication Date: 2018-05-22
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dialkyl hypophosphorous acid is still solid during the processing of high-temperature nylon, which will reduce the processing fluidity and surface quality of the product, and will also affect the optical and mechanical properties of high-temperature nylon, restricting its processing and application.

Method used

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  • Transparent flame-retardant high-temperature nylon and preparation method thereof
  • Transparent flame-retardant high-temperature nylon and preparation method thereof
  • Transparent flame-retardant high-temperature nylon and preparation method thereof

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preparation example Construction

[0043] This embodiment also provides a method for preparing the above-mentioned transparent flame-retardant high-temperature nylon, which includes:

[0044] Step S1: Mix the dried high-temperature nylon, bridged chain DOPO derivatives and nano silicon dioxide in parts by weight to obtain a mixed base material.

[0045] Further, the drying temperature of high-temperature nylon, bridged chain DOPO derivatives and nano-silica is 90-110°C, or 95-105°C, or 98-102°C; the drying time is 10-15 hours, or 11-10 hours. 14h, or 12-13h.

[0046] Further, it also includes putting high-temperature nylon, bridged chain DOPO derivatives and nano silicon dioxide into a high-speed mixing mixer, and mixing for 5-10 minutes to form a mixed base material;

[0047] More preferably, it also includes: mixing bridge chain DOPO derivatives and nano-silica in a high-speed mixer for 5 to 20 minutes to obtain a uniform flame retardant composition; then mixing high-temperature nylon and flame retardant com...

Embodiment 1

[0053] This embodiment provides a transparent flame-retardant high-temperature nylon, which includes by weight parts:

[0054] 90 parts of semi-aromatic high-temperature nylon resin, 9.8 parts of bridged chain DOPO derivatives (with a particle size of 5-6 μm), and 0.2 parts of nano-silica (with a particle size of 40-60 nm).

[0055] The molecular formula of the bridged chain DOPO derivative is formula I:

[0056]

[0057] The preparation method of the transparent flame-retardant high-temperature nylon comprises:

[0058] a. Mix the bridge chain DOPO derivatives and nano silicon dioxide in a high-speed mixer for 10 minutes to obtain a uniform flame retardant composition;

[0059] b. Dry the high-temperature nylon and flame retardant composition at 100° C. for 12 hours; then put the dried high-temperature nylon and flame retardant composition into a high-speed mixer and mix evenly to obtain a mixed base material;

[0060] c. Add the mixed base material to a twin-screw extru...

Embodiment 2

[0063] This embodiment provides a transparent flame-retardant high-temperature nylon, which includes by weight parts:

[0064] 85 parts of semi-aromatic high-temperature nylon resin, 14.8 parts of bridged chain DOPO derivative (compound of formula I, particle size 5-6 μm), 0.2 part of nano silicon dioxide (particle size 40-60 nm).

[0065] Its preparation method is with embodiment 1.

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Abstract

The invention provides transparent flame-retardant high-temperature nylon and a preparation method thereof, and relates to the field of a halogen-free flame-retardant macromolecular material. The transparent flame-retardant high-temperature nylon comprises the following components in parts by weight: 85 to 95 parts of high-temperature nylon, 5 to 15 parts of bridge chain DOPO derivative and 0.1 to0.5 part of nano-silicon dioxide. The preparation method comprises the following steps: mixing the dried high-temperature nylon, bridge chain DOPO derivative and nano-silicon dioxide according to theparts by weight to obtain a mixed base material; and melting and blending the mixed base material at 280 to 330 DEG C and performing extrusion granulation. The transparent flame-retardant high-temperature nylon has high flame resistance and mechanical property, has the advantages of transparency, low price, environmental friendliness, high efficiency and the like, and can serve as injection molding-grade electronic components, communication equipment and the like.

Description

technical field [0001] The invention relates to the field of halogen-free flame-retardant polymer materials, in particular to a transparent flame-retardant high-temperature nylon and a preparation method thereof. Background technique [0002] High-temperature nylon is the most widely used thermoplastic engineering plastic at this stage. Because of its heat resistance, wear resistance and excellent mechanical properties, it is widely used in the production of wear-resistant parts, household appliance parts, transmission structural parts, automobiles, etc. manufacturing parts etc. Semi-aromatic high-temperature nylon has become a focus of attention due to its low humidity, outstanding thermal stability, excellent chemical resistance and electrical properties, providing a guarantee for the multi-function and high-performance of electronic appliances, automotive industries, and communication equipment, especially It is widely used in surface solder mount components. [0003] H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K3/36C08K5/5313
CPCC08K3/36C08K5/5313C08K2201/003C08K2201/011C08L2201/02C08L2201/08C08L2201/10C08L2205/24C08L77/00
Inventor 何文涛黄伟江于杰龙丽娟秦舒浩严伟李娟廖声涛孙天伟
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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