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Coated flame retardant and preparation method thereof

A kind of flame retardant and coated technology, which is applied in the field of coated flame retardants and their preparation, can solve the problems of long heating time of flame retardants, affecting the appearance of products, unacceptable to users, etc., and achieves strong polarity and melting point Low, improve the effect of thermal decomposition

Inactive Publication Date: 2020-05-19
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of flame retardants, the flame retardants are heated for a long time during the preparation process, and the shearing effect is strong, and the flame retardants will be decomposed to varying degrees, resulting in the prepared composite materials being ineffective during injection molding. Different degrees of low-molecular substances are precipitated and deposited on the mold, which affects the appearance of the product
If a flame retardant with high thermal stability is selected, the cost will increase, which is unacceptable to users

Method used

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0025] The sources of raw materials used in the present invention are as follows:

[0026] PBT: L09XM, Jiangsu Heshili New Material Co., Ltd., with a viscosity of 0.93dl / g;

[0027] Polyamide: PA6, molecular weight is about 25,000.

[0028] Coating flame retardant A: diethyl aluminum hypophosphite; coating resin is ethylene-methacrylic acid copolymer sodium salt, melt index is 1.1g / 10min (190℃, 2.16kg), melting point is 96℃, commercially available . The weight content of the ...

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Abstract

The invention discloses a coated flame retardant. The metal salt of the ethylene-acrylic acid copolymer is mainly used as the coating resin and has excellent compatibility with the flame-retardant component (especially the metal salt flame-retardant component), so that the thermal decomposition of the flame retardant in the processing process of the flame-retardant component can be improved, and the toughness of the flame-retardant modified plastic can also be improved.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a coated flame retardant and a preparation method thereof. Background technique [0002] Nowadays, flame-retardant polymer materials have been widely used in electronic components, automotive materials and other applications that require fire protection. However, the more commonly used flame-retardant polymer materials include polyamide, polyester PBT, etc., all of which are flame-retardant by adding a certain amount of flame retardant. Such as brominated flame retardants, halogen-free flame retardants, inorganic flame retardants, etc. Brominated flame retardants decompose at high temperatures to produce strong carcinogenic dioxin and hydrogen bromide which can cause secondary pollution. Among the halogen-free flame retardants, phosphorous flame retardants have attracted widespread attention due to their diverse flame retardant mechanisms. However, due to the addition of ...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K5/5313C08K5/3492C08K7/14C08K13/06C08L77/02C08L67/02
CPCC08K5/34928C08K5/5313C08K7/14C08K9/10C08K13/06C08L2201/02C08L77/02C08L67/02
Inventor 陈大华陈金伟
Owner GUANGDONG IND TECHN COLLEGE
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