本文通过对改性矿物填料的热稳定性、红外光谱以及比表面积测定研究 ,揭示了改性剂与矿物填料的界面结合关系。研究表明 ,采用不同改性剂和改性方法 (干法、湿法 )处理的矿物填料具有不同的改性效果和热稳定性 ;改性剂与矿物填料的界面存在物理吸附与化学吸附双重作用 ;矿物填料表面物理、化学性质与改性效果有着直接的联系 In this paper, the thermal stability of the modified mineral filler, infrared spectroscopy and specific surface area determination study reveals the modifier and the mineral filler interface binding. The results show that the mineral fillers treated with different modifiers and modified methods (dry method, wet method) have different modification effects and thermal stability. The interface between modifier and mineral filler has the dual role of physical adsorption and chemical adsorption ; Mineral filler surface physics, chemistry and modification effect has a direct link