公开(公告)号：US20240270959A1

公开(公告)日：2024-08-15

申请号：US18646999

申请日：2024-04-26

申请人： Fine Blend Polymer ( Shanghai ) Co., Ltd

发明人： Pengwei SHI ,  Junjie Tang ,  Pinqiang Guo ,  Yongpeng Jl ,  Congshan Zhu ,  Hao Duan ,  Guangrun Jin

IPC分类号： C08L67/02 ,  C08K3/26 ,  C08K7/08

CPC分类号： C08L67/02 ,  C08K3/26 ,  C08K7/08 ,  C08K2003/265 ,  C08K2201/003 ,  C08L2201/06

摘要： The present invention discloses a high-stiffness high-toughness fully-degradable resin composition. The composition includes the following raw material components in parts by weight: 60-80 parts of PBAT; 10-30 parts of PLA; 5-15 parts of a calcium carbonate whisker; 0.3-0.6 parts of a high molecular weight chain extension compatilizer; 0.01-0.1 parts of a coupling agent; and other processing aids. A preparation method includes: treating a calcium carbonate whisker with a coupling agent, then mixing same with PBAT followed by extrusion and granulation by using a double-screw extruder to obtain a calcium carbonate whisker masterbatch; and then premixing the calcium carbonate whisker masterbatch, PLA, a high molecular weight chain extension compatilizer and an auxiliary agent, followed by melt extrusion and granulation to obtain a high-stiffness high-toughness fully-degradable PBAT/PLA resin composition.