REINFORCED POLYPROPYLENE MATERIAL AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2021/208435

A1

Disclosed is a reinforced polypropylene material, comprising the following components in parts by weight: a. 10-90 parts of a polypropylene resin; b. 0.5-25 parts of a compatibilizer; c. 5-60 parts of reinforced fibers; and d. 0.1-20 parts of a low-hardness toner, wherein the reinforced fibers comprise component I and component II, with component I being composed of a reinforced fiber with a length of 0.3-0.9 mm and accounting for 55-75% of the amount of the reinforced fibers, and the component II being composed of a reinforced fiber with a length of 1.1-1.9 mm and accounting for 12-35% of the amount of the reinforced fibers. According to the invention, the length and content distribution of the reinforced fibers are adjusted in the formula of the reinforced polypropylene material, such that the retention length of reinforced fibers is greatly maintained in the reinforced polypropylene material, and the low-temperature toughness and the long weather resistance of the obtained reinforced polypropylene material are obviously improved by combining the low-hardness toner at a specific content and supplementing the compatilizer at a specific content.

LU ZHANQUAN (CN)
HUANG XIANBO (CN)
YE NANBIAO (CN)
CHENG SHUWEN (CN)
GUAN ANNAN (CN)
LIU LEWEN (CN)
YANG XIAOYUN (CN)

PCT/CN2020/130135

October 21, 2021

November 19, 2020

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KINGFA SCIENCE & TECHNOLOGY CO (CN)

C08L23/12; C08K3/22; C08K7/14

CN111500009A	2020-08-07
CN110511488A	2019-11-29
CN105408400A	2016-03-16
CN108690259A	2018-10-23
JP2013072042A	2013-04-22
JP2018024762A	2018-02-15

GUANGZHOU WISON I.P. LAW FIRM (CN)

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