A kind of flame-retardant polymer composite material and preparation method thereof

Abstract

The invention provides a flame-retardant high-polymer composite material. The material is characterized by being prepared from an environment-friendly brominated flame retardant, graphene nano-platelets and an auxiliary dispersant, wherein the high-polymer material is polystyrene. The graphene nano-platelets are creatively added into the flame-retardant material and the adding mount is accurately limited; the graphene nano-platelets belong to condensed-phase flame retarding and a network structure is mainly formed in a combustion process, so that the material represents a solid-like behavior in a combustion process; the network structure can effectively inhibit thermal motion of a polymer molecular chain and the exchange of gas and heat is stopped. In view of the flame-retardant effect, only a few of graphene nano-platelets are added and the heat releasing speed and the smoke density of a polymer can be remarkably reduced; unpredicted technical effects are realized.

Description

technical field [0001] The invention relates to processes such as organic synthesis, blending of polymer composite materials, material flame retardancy and mechanical performance testing, and specifically relates to a flame-retardant polymer compound compounded by an environmentally friendly brominated flame retardant and graphene microchips. Materials, and methods of preparation and performance testing of the materials. technical background [0002] A series of environmental directives such as RoHS, WEEE and REACH promulgated by the European Union have set off a "halogen-free" storm in the field of polymer flame-retardant materials. However, judging the pros and cons of flame retardants should be judged from many aspects such as their application range, flame retardant efficiency, reliability, cost and environmental health impact, rather than just focusing on whether their chemical structure contains halogens. [0003] As far as the current situation is concerned, brominat...

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Problems solved by technology

[0006] Aiming at the problem that the existing brominated flame-retardant polymer materials will release a large amount of smoke during the combustion process, the present invention provides a method that uses graphene microchips and environmentally friendly brominated flame retardants to compound and fully utilizes both in polymers. The synergistic effect on flame retardancy of materials optimizes the flame retardancy effect of existing environmentally friendly brominated flame retardants, and complies with the more stringent research on environmental protection in modern society. Flame-retardant polymer composite materials

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