碳硼烷双酚型环氧树脂的固化动力学研究  

Curing kinetics of carborane bisphenol epoxy resins

作　　者：杨震[1] 周秋实[2] 齐士成[1] 张孝阿[1] 

机构地区：[1]北京化工大学材料科学与工程学院碳纤维及功能高分子教育部重点实验室,北京100029 [2]合肥工业大学化学与化工学院,安徽合肥230009

出　　处：《热固性树脂》2016年第3期22-25,共4页Thermosetting Resin

基　　金：中央高校基本科研业务费专项(JD-1512)资助

摘　　要：利用非等温DSC对o-碳硼烷双酚环氧树脂/4,4′-二苯砜二胺(DDS)以及m-碳硼烷双酚环氧树脂/DDS体系的固化反应过程进行了研究,并根据Kissinger方法求得体系固化反应的活化能分别为79.0和67.1 k J/mol,与E-51/DDS体系相比活化能较大,这归因于碳硼烷基团的大体积对环氧基团产生的位阻效应。根据Crane等方法计算得到体系固化反应级数分别为0.90和0.89。同时采用傅里叶红外光谱仪研究了碳硼烷环氧/DDS体系的等温固化反应,确定该体系的最佳固化条件为:180℃/2 h+200℃/2 h。The curing processes of o-carborane epoxy/DDS and m-carborane/DDS systems were studied by non-isothermal different scanning calorimetry（DSC）. The curing reaction activation energies obtained by Kissinger were 79.0 and 67.1 k J/mol,respectively and were higer than that of E-51/DDS system. This was due to the steric effect of bulky carbon borane group on the epoxy groups.Meanwhile,the curing reaction orders of the two systems were 0.90 and 0.89,respectively calculated by the Crane method. In addition,the isothermal curing reaction of carborane epoxy/DDS was investigated by FT-IR and the optimum curing conditions were as followed： 180 ℃/2 h＋200 ℃/2 h.

关 键 词：碳硼烷 环氧树脂 固化动力学 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]