化学机械法制备叶蜡石基复合钛白粉体研究

摘要

Using pyrophyllite and rutile titanium oxide powder as the substrates and outer covered material respectively, the compound powder was got with using the cooperative effects of chemical and the mechanical surface modification, which had the character of nuclear shell structure. TheHigh Resolution-Transmission Electronic Microscope, Energy Dispersion X-ray Spectrum, whiteness and hiding test results indicated the pyrophyllite surface was coated with titanium oxide better, the compound powder might take place of the pigment level titanium oxide powder.%以叶腊石微粉为基核材料、金红石型钛白粉为包覆基质,利用内核化学表面改性与机械研磨的协同效应,实现叶腊石/钛白粉的核壳包覆结构,进而得到新型的复合钛白粉体.高分辨透射电镜(HR-TEM)、能量分析光谱(EDX)、白度及遮盖力测试结果表明:钛白粉与叶腊石基质达到较好的包覆.复合粉体可实现颜料级钛白粉的替代.