KH-570原位改性纳米二氧化硅的制备与表征
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摘要
以正硅酸乙酯(TEOS)为原料,采用溶胶-凝胶法制备纳米二氧化硅溶胶,再用γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(KH-570)对其进行改性,得到KH-570改性的纳米二氧化硅。采用红外光谱(FT-IR)、粒径分析、透射电镜(TEM)以及热重分析(TG)等对原料及产物进行表征。结果表明:KH-570能够成功改性纳米二氧化硅,改性后的纳米二氧化硅尺寸主要分布在30～115nm。
Nano silica sol was prepared by sol-gel method with TEOS as raw material. Then, the modified nano silicon dioxide was obtained by the modification of male-methylallyl propyl trimethoxysilane (KH-570). It was modified to obtain KH-570 modified nano silica. The materials and products were characterized by Fourier transform infrared (FT-IR) spectroscopy, particle size analysis, transmission electron microscopy (TEM) and thermogravimetric analysis (TG). The results show that KH-570 can successfully modify nano-silica. The size of the modified nano-silica is mainly distributed at 30-115 nm.
Nano silica sol was prepared by sol-gel method with TEOS as raw material. Then, the modified nano silicon dioxide was obtained by the modification of male-methylallyl propyl trimethoxysilane (KH-570). It was modified to obtain KH-570 modified nano silica. The materials and products were characterized by Fourier transform infrared (FT-IR) spectroscopy, particle size analysis, transmission electron microscopy (TEM) and thermogravimetric analysis (TG). The results show that KH-570 can successfully modify nano-silica. The size of the modified nano-silica is mainly distributed at 30-115 nm.
引文
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[3]Wang L,Lu A,Xiao Z,et al.Modification of nanofibriform silica by dimethyldichlorosilane[J].Appl Surf Sci,2009,255(17):7542-7546.
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[5]Chang H L,Sun H P,Chung W,et al.Preparation and characterization of surface modified silica nanoparticles with organo-silane compounds[J].Colloid Surface A,2011,384(1):318-322.
[6]Ruban Y J V,Mon S G,Roy D V.Mechanical and thermal studies of unsaturated polyester-toughened epoxy composites filled with amine-functionalized nanosilica[J].Appl Nanosci,2013,3(1):7-12.
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