摘要
采用间氯过氧苯甲酸(MCPBA)对腰果酚缩水甘油醚(CGE)侧链上的双键进行环氧化,制备了多环氧基腰果酚缩水甘油醚(PECGE)。研究了以三乙烯四胺为固化剂的PECGE改性双酚A型环氧树脂E-51胶粘剂的固化性能、粘接性能和热稳定性。结果表明:PECGE的改性,可延长环氧树脂胶粘剂的适用期、凝胶时间、硬化时间,并提高了室温固化度;PECGE的加入量为10份时,室温固化5d后室温和80℃的拉伸剪切强度分别提高了29.8%和79.4%,加热固化后室温和80℃的拉伸剪切强度分别提高了6.7%和17.1%;对应失重5%的温度值下降了8.5℃。
The 3-chloroperbenzoic acid(MCPBA)and cardanol glycidyl ether(CGE)are employed as the raw materials to synthesize the polyepoxy cardanol glycidyl ether(PECGE)by the epoxidation of double bonds in the CGE side chain.The bisphenol A type E-51 epoxy resin adhesive is modified by PECGE with the triethylene tetraamine as the curing agent.The curing performance,adhesion properties and thermal stability of the mod-ified epoxy resin adhesive are studied.The results show that the working life,gelling time and hardening time are extended and the curing degree at room temperature is improved.When the addition amount of PECGE is 10phr,the shear strength at room temperature and 80℃ of the adhesive cured at room temperature for 5d increases by 29.8% and 79.4% respectively.The shear strength at room temperature and 80℃ of the adhesive cured at high temperature increases by 6.7% and 17.1% respectively,and the 5% weight loss of the adhesive decreases by 8.5℃.
作者
高星
王刚
刘晓辉
荣立平
赵颖
朱金华
李欣
张大勇
米长虹
GAO Xing;WANG Gang;LIU Xiao-hui;RONG Li-ping;ZHAO Ying;ZHU Jin-hua;LI Xin;ZHANG Da-yong;MI Chang-hong(Institute of Petrochemistry,Heilongjiang Academy of Sciences,Harbin 150040,China)
出处
《化学与粘合》
CAS
2020年第6期437-440,共4页
Chemistry and Adhesion
