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浆纸技术2017-05-08张建平报道:绵云母有着高纵横比片理、上下重叠取向的特点,具有较强的遮挡与散射作用。然而绵云母的亲水疏油特性,造成了其在有机相中的润湿和分散存在较大难度,而且容易凝聚成团,导致产品脆化、力学性能下降等缺点。因而必须加以改性,以提高分散性,完善应用性能和价值。机械力化学包覆方法,有强烈的机械力活化作用,是制备复合颗粒的有效方法之一。通过机械力化学包覆,Ti02在绵云母表面成膜,得到绵云母-Ti02复合颗粒材料。绵云母-Ti02复
Pulp & Paper Technology 2017-05-08 Zhang Jianping reports: The sponge mica has the characteristics of high aspect ratio, up-and-down overlapping orientation and strong shielding and scattering effects. However, the hydrophilic and oleophobic properties of the mica make it difficult to wet and disperse in the organic phase, and it is easy to agglomerate, resulting in the embrittlement of products and the decrease of mechanical properties. It must be modified to improve dispersion and improve application performance and value. Mechanical chemistry coating method, with a strong mechanical activation, is one of the effective methods for the preparation of composite particles. By mechanical chemical coating, Ti02 film in the surface of the mica, obtained sponge mica-TiO2 composite particulate material. Cotton mica-TiO2 complex