KCC-1/硅橡胶复合微球的制备及性能研究

Preparation and Properties of KCC-1/Silicone Rubber Composite Microspheres

通过改变反应条件制备了不同粒径、形貌的树枝状纤维形二氧化硅(KCC-1),将其进行改性后与硅橡胶微球进行复合得到KCC-1/硅橡胶复合微球。当KCC-1质量为硅橡胶微球质量的3%时为最佳比例。以此为最佳比例制备了系列主客体尺寸比不同的复合微球。通过动静态接触角测试可知,复合微球涂层水接触角呈现逐渐减小的趋势,而油接触角先增大后下降;涂层呈现出高疏水高粘附现象,这是由涂层表面微结构及表面化学成分共同决定。KCC-1/硅橡胶复合微球比纯硅橡胶微球具有更好的热稳定性。

A series of dendritic fibrous silica(KCC-1) with different particle sizes and morphologies were prepared by changing the reaction conditions. After being modified, it is compounded with silicone rubber microspheres to obtain KCC-1/silicone rubber compound microspheres. When the mass of KCC-1 is 3 % of the mass of the silicone rubber microsphere the optimum ratio is obtained. The water phase contact angle showed a decreasing trend, while the oil phase contact angle first increased and then decreased. The dynamic contact angle test shows that the composite microsphere coating exhibits high hydrophobicity and high adhesion,which is determined by the surface microstructure and surface chemical composition of the coating. KCC-1/silicone rubber composite microspheres have better thermal stability than pure silicone rubber microspheres.