硅溶胶是一种二氧化硅的水溶胶,它具有许多优良的性能,例如有较大的比表面,较强的吸附性,较好的粘结性和较高的耐火绝缘性等等。诸性能中,表面积大是其十分显著的特点。二氧化硅胶粒表面通常为硅羟基所覆盖,对胶粒表面硅羟基进行研究有着重要的意义。前人曾用多种方法测定二氧化硅胶粒表面的硅羟基数,由于硅胶是一种无定形物质,不同硅胶的 Silica sol is a silica sol, which has many excellent properties, such as a larger specific surface, strong adsorption, good adhesion and high fire resistance and so on. Among the properties, the large surface area is a very significant feature. The surface of silica micelles is usually covered by silanols, which is of great significance to the study of silanols on micelles. Many people have used a variety of methods to determine the silica gel particles on the surface of silica hydroxyl number, because the silica gel is an amorphous substance, different silica gel