纳米SiO2丁酮溶胶的可控制备与表征  

Controlled Synthesis and Characterization of Nanosilica MEK Sol

作　　者：胡鹏[1] 柴颂刚[1] 杜翠鸣[1] 

机构地区：[1]广东生益科技股份有限公司,国家电子电路基材工程技术研究中心,广东东莞523039

出　　处：《浙江化工》2017年第3期13-16,共4页Zhejiang Chemical Industry

摘　　要：利用改进的溶胶-凝胶法制备了以丁酮为分散相,纳米SiO_2粒径为50~200 nm的溶胶。硅溶胶的固含量为10%~30%,含水量低至0.2 wt.%左右,利用硅烷偶联剂对纳米SiO_2进行了表面改性,实现了非醇-水体系中的纳米SiO_2的可控制备。利用红外光谱仪、扫描电镜和卡氏水分测试仪等手段对纳米SiO_2溶胶进行了测试,研究了氨水、正硅酸乙酯等因素对纳米SiO_2合成的影响。结果表明:纳米SiO_2的球形度高,粒径一致性好;经过表面改性的纳米SiO_2分散性好,有利于改善其与有机树脂的相容性。Colloidal dispersions of monodispersed nanosilica（70-150nm） were prepared by improved solgel method in MEK solution, surface of nanosilica was modified by silane coupling agent. Solid content of nanosilica gels range from 10 to 30 percent, water content was only 0.2 percent achieved the controlled synthesis of nanosilica in non alcohol-water system. The nanosilica sols were characterized by FT-IR, SEM and moisture tester, some research had been made on ammonium and TEOS concentration,results show that, nanosilica particles have very high degree of sphericity and monodispersed size. After being modified with silane coupling agent, nanosilica has a good dispersion, it may improve the compatibility with organic resins.

关 键 词：纳米二氧化硅 硅溶胶 表面改性 

分 类 号：O648.1[理学—物理化学]