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分别采用溶剂 /非溶剂结晶法和机械研磨法探索了超细 BTF粒子的制备。目前采用溶剂 /非溶剂结晶法还难以使 BTF粒子粒径细化至微米级 ;采用机械研磨法获得了平均粒径 0 .74 4 μm、比表面积 19.95 m2 / g的亚微米级超细 BTF粒子
The preparation of ultrafine BTF particles were investigated by solvent / non-solvent crystallization and mechanical milling respectively. At present, it is still difficult to refine the particle size of BTF to micrometer by using the solvent / non-solvent crystallization method. Submicron ultrafine BTF particles with an average particle size of 0.744 μm and a specific surface area of 19.95 m2 / g were obtained by mechanical milling