【摘要】 <正> 环氧树脂在粘接技术与复合材料工业中被大量使用,主要用作胶粘剂和复合材料的基体。环氧树脂是一种热固性材料,它的固化物物理性能除与其组成有关外,还与固化制度选择合理与否有关。因此对固化过程进行研究,不但有理论上的意义,而且有很大的实用价值。更多还原

【Abstract】 The curing reaction of Epoxy Re- sin 618 was investigated with D sc and reaction-rate constant,energy of activation,degree of curing and glass- transition temperature (Tg) were obt- ained.It was found that there is a relation between the degree of cur- ing and Tg and that reaction-rate constant k and the temperature ar ~ ~ in good agreement withArrhenlues Equation. There are two caculating methods used to obtain energy of activation. 16.3 kcal/mol and 15.8 kcal/mol obtained by the methods are relatively similar. It was comfirmed that the curing reaction,in the range of studies,obeys first-order reaction.更多还原