Phosphorus-containing polyethylene and maleic anhydride graft copolymer with synergistic flame-retardant effects and method for preparing phosphorus-containing polyethylene and maleic anhydride graft copolymer

Abstract

The invention discloses a phosphorus-containing polyethylene and maleic anhydride graft copolymer with synergistic flame-retardant effects and a method for preparing the phosphorus-containing polyethylene and maleic anhydride graft copolymer. The phosphorus-containing polyethylene and maleic anhydride graft copolymer is a graft copolymer with polyethylene, maleic anhydride and organic phosphorus compounds. The phosphorus-containing polyethylene and maleic anhydride graft copolymer comprises 82-98 wt% of polyethylene, 0.5-6 wt% of maleic anhydride, 0.5-8 wt% of organic phosphorus compounds, 0.01-2 wt% of initiators,0-1 wt% of antioxidants and 0-1 wt% of lubricants. The phosphorus-containing polyethylene and maleic anhydride graft copolymer and the method have the advantages that excellent coupling effects can be realized by functional groups with the maleic anhydride for ethylene matrix polymers and polar substances such as inorganic mineral, inorganic flame retardants and glass fibers;the organic phosphorus compounds in systems have double synergistic flame-retardant and plasticization functions, influence on the processing properties and the mechanical properties of materials canbe prevented, the phosphorus-containing polyethylene and maleic anhydride graft copolymer is easy to process, and the phosphorus-containing polyethylene and maleic anhydride graft copolymer and the method conform to the current green and environment-friendly development trend.

Description

technical field [0001] The invention relates to a phosphorus-containing polyethylene maleic anhydride graft copolymer with a synergistic flame-retardant effect and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] As a thermoplastic, polyethylene has the characteristics of excellent electrical insulation, low temperature resistance, light weight, non-toxicity, easy processing and excellent mechanical properties, etc. It is widely used in wire and cable insulation materials, films, pipes and daily necessities, etc. field. [0003] With the development of the plastics industry, people have higher and higher requirements for the various properties of plastic products. In many fields, plastic products are required to have certain flame retardant effects, such as insulating cable materials and some indoor building materials. Flame retardants are divided into additive flame retardants and reactive flame retardants a...

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Problems solved by technology

In order to achieve the ideal flame retardant effect, it is necessary to add a large amount of flame retardant, but the addition of a large amount of flame retardant will lead to poor compatibility with the matrix resin, which will seriously reduce the mechanical properties of the material

Among them, although the flame retardant efficiency of halogenated flame retardants is higher, the combustion will release a large amount of toxic gases and dense smoke, which will cause secondary harm and pollution to people and the environment.

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