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一、加速抛光的机理众所周知,硅酸盐玻璃水解形成硅酸胶保护性薄膜和游离碱离子,如:Na_2SiO_3+2H_2O→2Na~+OH~-+H_2SiO_3阻止水解继续进行。某些盐类可以加速水解,因为该盐类跟硅酸胶起反应,形成化合物沉淀。如钼酸盐和铵盐等就属于这类盐,如钼酸盐 M_2MoO_4与硅酸胶起反应:M_2MoO_4+H_2SiO_3→2MOH+MoSiO_5↓选择了钼酸铵盐类进行实验,该盐类与玻璃表面水解的硅酸胶保护薄膜相互作用,形成硅酸钼沉淀物被水冲刷掉。
First, the mechanism of accelerated polishing As we all know, silicate glass hydrolyzed silicate protective film and the formation of protective film ions, such as: Na_2SiO_3 + 2H_2O → 2Na ~ + OH ~ - + H_2SiO_3 to prevent hydrolysis continue. Some salts accelerate hydrolysis because the salt reacts with the silicic acid gel to form a compound precipitate. Such as molybdate and ammonium salts belong to such salts, such as molybdate M_2MoO_4 reacts with silica gel: M_2MoO_4 + H_2SiO_3 → 2MOH + MoSiO_5 ↓ selected ammonium molybdate experiments, the salt and the glass surface Hydrolyzed silicic acid gel protects the thin film from interacting to form a molybdenum silicate precipitate that is washed away by water.