引用本文:孙 磊，梁志杰，原津萍，周克兵.n?SiO2的表面改性及其增强环氧树脂复合材料的性能[J].中国表面工程,2011,24(1):69~72
SUN Lei, LIANG Zhi–jie, YUAN Jin–ping, ZHOU Ke–bing.Surface Modification of n–SiO2 and the Properties of n–SiO2 Reinforced Composite[J].China Surface Engineering,2011,24(1):69~72
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n?SiO2的表面改性及其增强环氧树脂复合材料的性能
孙 磊，梁志杰，原津萍，周克兵
装甲兵工程学院 装备再制造工程系
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 %。
关键词:  聚合物  纳米复合材料  n?SiO2  表面改性  强度
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Surface Modification of n–SiO2 and the Properties of n–SiO2 Reinforced Composite
SUN Lei, LIANG Zhi–jie, YUAN Jin–ping, ZHOU Ke–bing
Department of Equipment Remanufacture Engineering, Academy of Armored Forces Engineering
Abstract:
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.
Key words:  polymer  nanocomposite  n–SiO2  surface modification  strengthen
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