文献类型：期刊文献

英文题名：Surface treatment mechanism of nano-SiO2 and the properties of PP/nano-SiO2 composite materials

作者：Wu, Wei[1]; Wagner, Manfred H.[2]; Xu, Zhongde D.[3]

机构：[1]E China Univ Sci & Technol, Petrochem Inst, Shanghai 201512, Peoples R China;[2]Tech Univ Berlin, D-10623 Berlin, Germany;[3]E China Univ Sci & Technol, Inst Mat Engn, Shanghai 200237, Peoples R China

年份：2003

卷号：281

期号：6

起止页码：550

外文期刊名：COLLOID AND POLYMER SCIENCE

收录：;EI(收录号：2003297545195);WOS:【SCI-EXPANDED(收录号:WOS:000183851800007)】；

语种：英文

外文关键词：nanometer-SiO2; PP; composite material; surface treatment; interfacial mechanism

摘要：The effects of different surface treatments of nano-SiO2 on the microstructure, the particle distribution, interfacial adhesion, and the mechanical properties of PP/nano-SiO2 Composite materials were investigated. The mechanism of particle distribution arising from nano-SiO2 surface treatment was analyzed. The results show that, by using only a small amount of nano-SiO2, the strength and the modulus of the composite material can be increased effectively, and increased toughness at room temperature can result. Nano-SiO2 was treated by A-1010 liquid phase first, then by PP solution, which acts as a big molecular obstructer layer of PP to assure that the distance between centers of mass is always larger than the van der Waals radius of particles, thus diminishing the tendency of agglomeration of SiO2. This is beneficial to its distribution in PP and to its strong interfacial bonding with the PP matrix. The mechanical properties were superior to those of PP/nano-SiO2 composite materials treated by A-1010 only.