n-SiO_2的表面改性及其增强环氧树脂复合材料的性能  

Surface Modification of n-SiO_2 and the Properties of n-SiO_2 Reinforced Composite

作　　者：孙磊[1] 梁志杰[1] 原津萍[1] 周克兵[1] 

机构地区：[1]装甲兵工程学院装备再制造工程系,北京100072

出　　处：《中国表面工程》2011年第1期69-72,共4页China Surface Engineering

摘　　要：纳米粒子在聚合物中均匀、稳定分散,是纳米复合材料具有优良性能的前提。文中通过选择表面活性剂改性纳米SiO2,提高纳米粒子在环氧树脂中的分散性,制备出不同含量的n–SiO2/环氧树脂聚合物复合材料,探讨了纳米SiO2对复合材料强度的影响规律。研究结果表明:改性后的纳米SiO2粒子在聚合物体系中呈单分散状态,均匀分布的纳米粒子与基体结合紧密,其在基体中起到了物理交联点的作用,对剪切力的抵抗能力增强,提高了复合材料的综合性能。加入6%质量分数的纳米粒子,复合材料的拉伸剪切强度可提高35.1%。To increase the properties of nano-polymer composite,the key job is how to disperse nano-particles equably and steadily.In this paper,modificating n-SiO2 by surface activity agent to disperse nano-particles was studied.The results showed that n-SiO2 particles modificated disperses well in nano-polymer composite,and combined with Epoxy resin matrix closely,enhanced the properties of composite as the role of physical combination spot against the shear strengthens.When the nano particle was adulterated with 6 %,the nano-polymer composite reached to the highest shear strengthen which is 35.1% higher than that of the composite with no nano-particles filled.

关 键 词：聚合物 纳米复合材料 n-SiO2 表面改性 强度 

分 类 号：O485[理学—固体物理] TB33[理学—物理]