公开(公告)号：US20250092290A1

公开(公告)日：2025-03-20

申请号：US18727546

申请日：2023-03-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： En Zhong Zhang ,  Heng Yu Huan ,  Li Jing Zhang ,  Pu Ren ,  Xin Xin Sun

IPC: C09J163/00 ,  C08K5/375 ,  C08K5/5419 ,  C09J7/35 ,  C09J131/04

Abstract: The present invention provides a curable composition, a curable adhesive film, and an adhesive tape. Specifically, the curable composition comprises, based on the total weight thereof as 100 wt %: 15-50 wt % of an ethylene-vinyl acetate copolymer; 10-40 wt % of polyvinyl butyral; and 20-60 wt % of an epoxy resin. The curable adhesive film according to the technical solution of the present invention has no tackiness at room temperature, which enables the curable adhesive film to have the ability to reposition even after being laminated on a substrate, making the curable adhesive film applicable to substrates with irregular shapes. Once initiated by UV radiation, the curable adhesive film is flowable and tacky at elevated temperatures. The cured adhesive has good bonding strength at high temperatures. The curable adhesive film features high bond strength and low odor, and can be used for void filling, especially for side panel bonding of electric vehicle battery modules in the electric vehicle (EV) market.