CAJ | 학술논문

对未改性和表面偶联处理的氧化铝颗粒填充环氧树脂复合材料(颗粒体积分数为20%,35%和40%)的力学性能进行对比研究.通过对改性前后复合材料结构的均匀性和抗拉伸性能的分析得出以下结论:添加了偶联处理后的氧化铝颗粒使复合材料的均匀性、断裂强度和弹性模量都有了较大程度的提高.原因在于对颗粒的表面偶联改性处理使颗粒间存在的黏聚吸附力下降,增加了颗粒与树脂基体间的结合力,使氧化铝颗粒能够在树脂基体中达到很好的分散状态.采用扫描电镜分析手段对样晶断口形貌的分析说明材料内部界面问的结合状态以及颗粒在基体中的分布状况.
대미개성화표면우련처리적양화려과립전충배양수지복합재료(과립체적분수위20%,35%화40%)적역학성능진행대비연구.통과대개성전후복합재료결구적균균성화항랍신성능적분석득출이하결론:첨가료우련처리후적양화려과립사복합재료적균균성、단렬강도화탄성모량도유료교대정도적제고.원인재우대과립적표면우련개성처리사과립간존재적점취흡부력하강,증가료과립여수지기체간적결합력,사양화려과립능구재수지기체중체도흔호적분산상태.채용소묘전경분석수단대양정단구형모적분석설명재료내부계면문적결합상태이급과립재기체중적분포상황.
The homogeneity and mechanical properties of alumina filled epoxy composites with particle volume fractions of 20%,35% and 40% were investigated. The as-received particles and particles modified with silane coupling agent were used in the com-parison test. The results show that the surface modified particles lead to great improvement in homogeneity, tensile strength and elas-tic modulus. Moreover, the modification of the surface activity of particles reduces the filler-filler interaction and improves the adhe-sion of filler-epoxy resin, achieving high dispersion of the modified alumina in the resin matrix. Scanning electron microscope was employed to illustrate the interface bonding and particle distribution in epoxy resin.