Polyolefin blend used for continuous long fiber reinforced prepreg tapes, and preparation method thereof

A prepreg tape and polyolefin technology, applied in the field of continuous long fiber fiber reinforced prepreg tape, can solve the problem of limited compatibility between thermoplastic resin and fiber interface, low bonding force between thermoplastic resin and fiber, poor environmental stress resistance, etc. problems, to achieve excellent resistance to environmental stress, enhanced mechanical properties, and enhanced environmental stress resistance

Active Publication Date: 2016-10-05
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are certain defects in the above-mentioned blends. Because the blends are poorly resistant to environmental stress, they are prone to stress cracking in a certain environment. At the same time, because the grafting rate of polyolefin grafted maleic anhydride is low, it is not s

Method used

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  • Polyolefin blend used for continuous long fiber reinforced prepreg tapes, and preparation method thereof
  • Polyolefin blend used for continuous long fiber reinforced prepreg tapes, and preparation method thereof
  • Polyolefin blend used for continuous long fiber reinforced prepreg tapes, and preparation method thereof

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[0010] Invented polyolefin blend for continuous fiber reinforced prepreg tape, the components are calculated in parts by mass, including 100 parts of medium density polyethylene, 0.5-3 parts of polyethylene grafted bismaleimide, 2 -5 parts of ethylene maleic anhydride copolymer and 0.5-3 parts of polyethylene grafted silane and 0.05-0.5 parts of silane coupling agent, wherein the ethylene maleic anhydride copolymer contains 20%-50% by mole The maleic anhydride, the silane coupling agent is one of KH-550, KH-560 or KH-570 or a mixture of any two or more. The invention uses medium-density polyethylene as the matrix resin to make it have excellent environmental stress resistance, and is melted with polyethylene grafted bismaleimide, ethylene maleic anhydride copolymer, polyethylene grafted silane and silane coupling agent Blending can not only improve the heat resistance of the matrix resin, but also through the maleic anhydride group of the ethylene maleic anhydride copolymer and...

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Abstract

The invention relates to a polyolefin blend used for continuous long fiber reinforced prepreg tapes. The polyolefin blend comprises, by mass, 100 parts of medium-density polyethylene, 0.5-3 parts of polyethylene grafted bimaleimide, 2-5 parts of an ethylene-maleic anhydride copolymer, 0.5-3 parts of polyethylene grafted silane and 0.05-0.5 parts of a silane coupling agent, wherein the ethylene-maleic anhydride copolymer comprises 20-50 mole% of maleic anhydrides, and the silane coupling agent is one or a mixture containing two or above of KH-550, KH-560 and KH-570. The polyolefin blend improves the environment stress tolerance and the interface bonding force of a resin matrix, and produced continuous long fiber reinforced prepreg tapes have excellent environment stress resistance and extremely high longitudinal tensile strength.

Description

technical field [0001] The invention relates to a polyolefin blend for continuous long fiber reinforced prepreg tape and a preparation method thereof, belonging to the technical field of continuous long fiber fiber reinforced prepreg tape. Background technique [0002] Prepreg tapes for continuous long fiber reinforcement are mainly composed of thermoplastic resins and fibers, while the matrix resins of current prepreg tapes include high-density polyethylene or polypropylene, high-density polyethylene or polypropylene grafted maleic anhydride and silane coupling Combined use of high-density polyethylene or polypropylene grafted maleic anhydride into the blend formula to improve the interfacial adhesion between high-density polyethylene or polypropylene and fibers. The blend is to a certain extent Above all, the shortcoming of the weak interfacial bonding between the resin and the fiber is solved, and the mechanical properties of the prepreg tape can be improved. However, th...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/26C08L51/06C08J5/04
Inventor 刘春林吴盾廖华勇章诚陶国良龚方红
Owner CHANGZHOU UNIV
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