Polyurethane modified epoxy resin adhesive material as well as preparation method and application thereof

• Main Authors: WANG JIN, WANG QIHUA, WANG TINGMEI, ZHANG CHANGSHENG, ZHANG YAOMING, JU HAO, YANG ZENGHUI, CHEN SHOUBING, JIANG YIHUI, LIU JIANFENG
• Format: Patent
• Language: Chinese; English
• Published: 11.03.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

The invention provides a polyurethane modified epoxy resin adhesive material as well as a preparation method and application thereof, and belongs to the technical field of adhesive materials. According to the invention, polyurethane is used for toughening modification of epoxy resin, polytetrahydrofuran diol and toluene-2, 4-diisocyanate are used as raw materials for synthesis of a polyurethane prepolymer, and isocyanate groups in the polyurethane prepolymer can react with hydroxyl groups in the epoxy resin, so that the epoxy resin is subjected to a reaction with hydroxyl groups in the epoxy resin; when the epoxy resin is subjected to toughening modification, no great negative influence is generated on the strength, and the polyurethane has high polarity and high bonding strength on a cable heat shrink tube. The 3, 3 '-dichloro-4, 4'-diaminodiphenyl methane is used as the curing agent, the fluidity of the adhesive material is adjusted by using the nano aluminum oxide, the graphene and the thickening agent, an