Abstract
The surface of magnesium hydroxide (MH) was modified with a silane coupling agent A-174 (3-methacryloxypropyltrimethoxysilane) to improve MH dispersion and hydrophobicity. The effects of modification on the resultant product and the mechanisms involved were studied through activation index analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy and scanning electron microscope. The optimum modification conditions were obtained as follows: an A-174 dosage of 1.5 wt.% at 145 °C for 10 min at a stirring rate of 3000 rpm. A chemical reaction was observed between the MH surfaces and A-174. The dispersion and hydrophobicity of MH remarkably improved after surface modification.
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