Graphene-modified polyethylene flame-retardant composite material and preparation method thereof

A flame retardant composite material and graphene modification technology, applied in the field of polymer composite materials, can solve the problems of low flame retardant and reinforcement efficiency, and can not have both flame retardant and reinforcement dual functions, so as to increase the thickness of the carbon layer , The effect of increasing the void density and improving the bonding strength

Inactive Publication Date: 2017-06-13
DONGGUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the low flame retardant and reinforcement efficiency of polyethylene composite materials in the prior art, or the problem that the flame retardant and reinforcement dual-function characteristics cannot be simultaneously provided, and

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  • Graphene-modified polyethylene flame-retardant composite material and preparation method thereof

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Embodiment 1

[0025] A graphene-modified polyethylene flame-retardant composite material is characterized in that: it is made of polyethylene matrix, modified graphene, silicon-phosphorus compound flame retardant, synergistic reinforcement, filler, toughener and additives, By weight, 55 parts of polyethylene matrix, 3 parts of modified graphene, 13 parts of silicon-phosphorus composite flame retardant, 13 parts of synergistic reinforcement, 10 parts of filler, 5 parts of toughening agent and 1 part of additive; The modified graphene is graphene oxide treated with hexachlorocyclotriphosphazene, and the weight ratio of the two is 1:10; the particle size of the silicon-phosphorus compound flame retardant is 5 microns; the synergistic enhancer It is formed by mixing carbon nanotubes and modified titanium dioxide according to a weight ratio of 1:10, wherein the carbon nanotubes are modified multi-walled carbon nanotubes, and the modification step is first to use multi-walled carbon nanotubes with...

Embodiment 2

[0035] A graphene-modified polyethylene flame-retardant composite material, made of polyethylene matrix, modified graphene, silicon-phosphorus compound flame retardant, synergistic reinforcement, filler, toughener and additives, by weight, 60 parts of polyethylene matrix, 4 parts of modified graphene, 15 parts of silicon-phosphorus composite flame retardant, 17 parts of synergistic reinforcement, 13 parts of filler, 7 parts of toughening agent and 2 parts of additive; the modified graphite Graphene is graphene oxide treated with hexachlorocyclotriphosphazene, and the weight ratio of the two is 1:13; the particle size of the silicon-phosphorus composite flame retardant is 5 microns; the synergistic enhancer is made of carbon nanotubes It is mixed with modified titanium dioxide according to the weight ratio of 1:12, wherein the carbon nanotubes are modified multi-walled carbon nanotubes, and the modification step is to first use the multi-walled carbon nanotubes with a volume rat...

Embodiment 3

[0045] A graphene-modified polyethylene flame-retardant composite material, made of polyethylene matrix, modified graphene, silicon-phosphorus compound flame retardant, synergistic reinforcement, filler, toughener and additives, by weight, 65 parts of polyethylene matrix, 5 parts of modified graphene, 16 parts of silicon-phosphorus composite flame retardant, 20 parts of synergistic reinforcement, 15 parts of filler, 8 parts of toughening agent and 3 parts of additive; the modified graphite Graphene is graphene oxide treated with hexachlorocyclotriphosphazene, and the weight ratio of the two is 1:15; the particle size of the silicon-phosphorus composite flame retardant is 10 microns; the synergistic enhancer is made of carbon nanotubes It is mixed with modified titanium dioxide according to the weight ratio of 1:13, wherein the carbon nanotubes are modified multi-walled carbon nanotubes, and the modification step is to first use the multi-walled carbon nanotubes with a volume ra...

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Abstract

The invention relates to a graphene-modified polyethylene flame-retardant composite material and a preparation method thereof. The preparation method comprises the following steps of uniformly mixing a polyethylene matrix, modified graphene, a silicon and phosphor compound flame retardant agent, a synergistic enhancer, a filler, a toughener and an additive in a mixing machine, and performing injection molding by an injection molding machine, so as to obtain a final product, namely the graphene-modified polyethylene flame-retardant composite material. The modified graphene is prepared by treating graphene oxide by phosphonitrilic chloride trimer; the synergistic enhancer is prepared by mixing a carbon nanotube and modified titanium dioxide; the filler consists of modified glass fiber and modified nanometer silicon dioxide; under the synergistic action of the modified graphene, the silicon and phosphor compound flame retardant agent, the synergistic enhancer and the filler, the graphene-modified polyethylene flame-retardant composite material is prepared. The preparation method has the advantages that the preparation technology is simple; the additive component has no pollution to environment; the prepared polyethylene composite material can meet the requirement of mechanical strength, and can realize the flame retardant effect; the use range of the polyethylene is widened.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and specifically relates to a graphene-modified polyethylene flame-retardant composite material and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polyethylene has been widely used in packaging and daily life in various fields such as industry, agriculture, medical treatment, and hygiene. It is currently the largest and fastest-growing product among polymer materials in the world. There are many sources of raw materials, low price, excellent material performance, good electrical insulation and chemical stability, and at the same time, it has the advantages of easy processing and molding. Although polyethylene has many advantages, it also has its shortcomings, mainly manifested in poor toughness, low temperature resistance, aging resistance, large molding shrinkage, and easy combustion. At the same time, due to its non-polar characteristics, it ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/04C08K3/04C08K9/02C08K7/24C08K9/06C08K7/14C08K3/36C08K3/22C08K7/00
CPCC08L23/06C08K2201/011C08L2201/02C08L2201/22C08L2205/025C08L2205/03C08L2207/062C08L2207/066C08L83/04C08K13/06C08K9/04C08K3/04C08K9/02C08K7/24C08K9/06C08K7/14C08K3/36C08K2003/2241C08K7/00
Inventor 张峻岭唐玉许霞
Owner DONGGUAN POLYTECHNIC
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