以正硅酸四乙酯(TEOS)为前驱体,氨水为催化剂,经St6ber法制备了单分散SiO2纳米微球,并采用硅烷偶联剂KH-570对其表面进行了改性;通过激光粒度分析仪、傅里叶变换红外光谱、透射电子显微镜对SiO2纳米微球进行了检测分析.结果表明,随着TEOS和氨水用量的增加,SiO2纳米微球的粒径逐渐增大,而粒径分布到后期也有所增加;经KH-570改性后,SiO2纳米微球不仅具有良好的单分散性,而且表面成功接枝土丙烯酸酯基团,因而具有较好的亲油性,能更好地分散在甲苯和苯乙烯中.
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