摘要
采用甲基丙烯酸缩水甘油酯对Al2O3颗粒进行接枝改性,制备了接枝微粒,考察了PGMA/Al2O3对环氧电子灌封材料力学性能的影响,并利用扫描电镜观察了环氧灌封材料经PGMA/Al2O3填充前后的冲击断面的形貌变化。研究结果表明,经接枝改性后,接枝微粒PGMA/Al2O3对环氧灌封材料的力学性能起到了明显的改善作用:PGMA/Al2O3对环氧灌封料的增韧效果明显优于未改性的Al2O3,且随PGMA/Al2O3填充量的增大,冲击韧性先增大后减小,在填充量较小(0.7%)时,冲击韧性最大;屈服强度也随PGMA/Al2O3的加入出现一最佳值;并随接枝微粒PGMA/Al2O3的接枝率的增加,其冲击韧性和屈服强度明显增大。
Grafted particles PGMA/Al2O3were prepared by grafting poly-glycidyl methacrylate （GMA） onto Al2O3 with the method of ＂Grafting from＂. The morphology and mechanical properties of epoxy resin blended with PGMA/ Al2O3 particles were studied. The results show that the toughening effect of PGMA/Al2O3 particles on epoxy resin is much better than that of unmodified Al2O3 particles. The impact strength and yielded strength of epoxy resin is significantly improved when a smaller amount of grafted particles is added. In addition, the higher the grafting degree of PGMA/Al2O3 particles is, the greater the impact strength and yielded strength of epoxy resin is.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第3期53-56,共4页
Polymer Materials Science & Engineering
基金
山西省研究生优秀创新项目(20081065)
中北大学青年科学基金项目
太原市科技项目计划大学生创新创业专项
