环氧树脂胶黏剂在石墨粘接接头的热分解动力学

引言 与传统的铆接、螺栓连接工艺相比,粘接技术因具有操作灵活、简便、生产效率高、生产成本低等优点,而广泛用于化工、汽车、航空、航天等现代结构工程,在工程设计和制造领域的应用持续增长[1-3].

Thermal decomposition dynamics of epoxy adhesive in adhesive/graphite joints

The energy dispersive X-ray analysis method can measure the elemental compositions and changes of the epoxy adhesive in adhesive/graphite joints.The weight loss of the adhesive in the adhesive/graphite joint can be measured with EDX, so the thermal decomposition dynamics of the epoxy adhesive in the joint can be determined.The values of thermal decomposition energy of the adhesive in the joint and in the air atmosphere were -35.89 kJ•mol^-1 and -34.43 kJ•mol^-1,respectively.The rate of thermal decomposition of the adhesive in the joint was lower than that of the adhesive in the air,because air was excluded in the joint.It auord with the rule of thermal decomposition of adhesive.This is a new method of measuring some properties of adhesive in the joints.