硅烷偶联剂KH570对纳米SiO2的表面改性及其分散稳定性.pdf

·1596 · CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 2009 28 9 KH570 SiO 2 510640 KH570 SiO2 TEM Zeta FTIR SiO2 KH570 SiO2 Zeta SiO2 200 nm 100 nm SiO2 TQ 127.2 A 100066132009 Surface modification of nano-sized SiO with silane coupling agent and its 2 dispersion SU Ruicai LI Wenfang PENG Jihua DU Jun College of Material Science and EngineeringSouth China University of TechnologyGuangzhou 510640 GuangdongChina Abstract Nano-sized SiO2 was surface modified with silane coupling agent KH570. The role of surface modification was characterized by TEM Zeta potential analysisand FTIR. It was found that the surface of nano-sized SiO2 is covered by organic functional groups from KH570. After surface modification the Zeta potential and dispersion of nano-sized SiO2 are improved greatly. The statistical size of particle conglomeration of nano-sized SiO2 is reduced from 200 nm before modification to less than 100nm stability after the modification. Key words nano-sized SiO2 surface modificationsilane coupling agentdispersion SiO2 [45] [1] SiO2 [23] SiO2 SiO2 Ba2+ [6] KH570 SiO2 2009 03 132009 04 09 1984E mail suruicai@126.com 020 E mail mewfl