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研究了不同温度下电子束辐照对含和不含多官能团单体的NBR的影响。利用FTIR、动态机械热分析及溶胶-凝胶分析方法分析了经不同剂量辐照后橡胶结构发生的变化。通过Charlesby-Pin-ner公式确定了NBR的断链和交联比。测试了力学性能,发现拉伸强度随多官能单体在高温下的辐照接枝而增大。
The effect of electron beam irradiation on NBR with and without polyfunctional monomers at different temperatures was investigated. The changes of rubber structure after irradiated by different doses were analyzed by FTIR, dynamic mechanical thermal analysis and sol-gel analysis. The chain scission and crosslinking ratio of NBR were determined by Charlesby-Pin-ner formula. The mechanical properties were tested and the tensile strength was found to increase with irradiation grafting of multifunctional monomers at high temperatures.