公开(公告)号：EP4324879A1

公开(公告)日：2024-02-21

申请号：EP22803626.5

申请日：2022-03-23

申请人： KINGFA SCI. & TECH. CO., LTD.

发明人： QIAN, Zhijun ,  CHEN, Pingxu ,  HUANG, Xianbo ,  YU, Fei ,  TANG, Yuhang ,  GUO, Tanghua

IPC分类号： C08L23/14 ,  C08L23/16 ,  C08L23/06 ,  C08L23/08 ,  C08L53/00

摘要： Disclosed are a polypropylene composite material capable of cracking at a low temperature, and a preparation method therefor and use thereof. The polypropylene composite material comprises the following components in parts by weight: 35-75 parts of special polypropylene A, 3-10 parts of special polypropylene B, 15-30 parts of a filler, 2-10 parts of a special toughening agent, 15-25 parts of a toughening agent, 0.1-0.3 part of a lubricant, 0.1-0.3 part of a photo stabilizer, and 0.2-0.6 part of an antioxidant, wherein the special toughening agent comprises ultrahigh molecular weight polyethylene and a metallocene ethylene-propylene copolymer. The polypropylene composite material that is capable of cracking at a low temperature and has good rigidity is prepared by using the special polypropylene A, the special polypropylene B, and the special toughening agent in combination with the normal filler and the normal toughening agent, and the polypropylene composite material has a wide application prospect (for example, in automotive interior parts such as a bare column capable of cracking at a low temperature).