公开(公告)号：EP4119613A1

公开(公告)日：2023-01-18

申请号：EP20932283.3

申请日：2020-11-19

申请人： Kingfa Sci. & Tech. Co., Ltd.

发明人： LU, Zhanquan ,  HUANG, Xianbo ,  YE, Nanbiao ,  CHENG, Shuwen ,  GUAN, Annan ,  LIU, Lewen ,  YANG, Xiaoyun

IPC分类号： C08L53/00 ,  C08L23/12 ,  C08L23/14 ,  C08L51/06 ,  C08K13/04 ,  C08K7/14 ,  C08K7/10 ,  C08K3/22 ,  C08J5/04

摘要： The present invention discloses a reinforced polypropylene material comprising in parts by weight:
a, 10 to 90 parts of a polypropylene resin;
b, 0.5 to 25 parts of a compatilizer;
c, 5 to 60 parts of reinforcing fibers;
d, 0.1 to 20 parts of low-hardness colorant powder;
wherein the reinforcing fibers comprise a component I, a component II and a component III:
the component I is composed of reinforcing fibers with a length of 0.1 mm - 0.6 mm, accounting for 35% - 50% of a number of reinforcing fibers;
the component II is composed of reinforcing fibers with a length of 0.7 mm - 1.3 mm, accounting for 35% - 45% of the number of reinforcing fibers;
the component III is composed of reinforcing fibers with a length of 1.4 mm - 2.0 mm, accounting for 5% - 20% of the number of reinforcing fibers.


By adjusting the length and content distribution of the reinforcing fibers in the formulas of reinforced polypropylene material, greatly retaining the length of reinforcing fibers in the reinforced polypropylene material, and by combining a specific amount of low-hardness colorant powder and supplementing with a specific amount of compatilizer, the obtained reinforced polypropylene material would have obviously improved low-temperature tenacity and long-term weathering resistance.