Study on Spherical Silica Micro Powder Modified by Oligosiloxanes and its Application
The surface modification of liquid-phase spherical silica micro powder was carried out using self-made vinyloligosi-loxanes,aminooligosiloxanes,and multi oligosiloxanes as modifiers.The structure of the modifier,microstructure and particle size distribution of the silica micro powder were characterized by FT-IR,SEM and particle size analyzer,and the effect of modi-fied silica micro powder on the mechanical properties of epoxy resin was investigated.The results show that when the liquid-phase spherical silica micro powder surface is treated with the modifiers,the particle size of the silica micro powder and its uniformity increase.The impurities distributed between silica micro powder particles are also improved,when added to the epoxy resin,the mechanical properties of the material are improved.
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