Polyethylene glycol terephthalate composite material and preparation method thereof

Abstract

The embodiment of the invention discloses a polyethylene glycol terephthalate composite material, comprising the following raw materials in parts by weight: 60-80 parts of polyethylene glycol terephthalate, 10-20 parts of functionalized polyolefin elastomers, 15-30 parts of fibers, 1-5 parts of polyfunctional vinyl monomers and 2-10 parts of composite auxiliaries. The functionalized polyolefin elastomer comprises the block polymer and / or graft polymer of the polyolefin elastomer. The invention also provides a preparation method of the polyethylene glycol terephthalate composite material. The functionalized polyolefin elastomers self adopted by the invention have good compatibility with PET, therefore, the polyethylene glycol terephthalate composite material with high strength and high toughness is prepared by a composite method of enhanced radiation and reactive blending.

Description

technical field The invention relates to the technical field of composite materials, in particular to a polyethylene terephthalate composite material and a preparation method thereof. Background technique Polyethylene terephthalate (PET for short) is a highly crystalline aromatic polyester with high strength, high rigidity, high heat resistance temperature, good chemical resistance, fully recyclable and low price And other advantages, polyethylene terephthalate has become a hot spot in the development of engineering plastics. Due to the lack of toughness of PET, experts at home and abroad have carried out a lot of modification work, for example, by adding rubber or elastomer as a toughening agent to improve the toughness of polyethylene terephthalate. However, due to the addition of toughening agents such as rubber or elastomers, the original strength and rigidity of PET are reduced. In addition, in order to enhance the strength and rigidity of PET, some people add fibers ...

AI Technical Summary

Problems solved by technology

Although the fiber-reinforced polyethylene terephthalate composite material prepared by this method has good strength and high temperature resistance, it has the disadvantage of insufficient toughness

Due to the insufficient toughness of the fiber-reinforced polyethylene terephthalate composite material prepared by Chinese patent CN101519481A, the present invention considers to provide a high-strength and high-toughness polyethylene terephthalate composite material and a preparation method thereof, so that The strength and toughness of polyethylene terephthalate have been fundamentally improved