超剪切在沉淀白炭黑分散细化中的研究

Research on ultra-shearing technology of precipitated silica dispersing and disintegrating treatment

二氧化硅是高比表面积的粉体物料,在水中形成极易团聚的沉淀白炭黑。为全面提高其分散性,使其平均粒径达到2—5μm,利用最新的超剪切技术,对沉淀白炭黑进行分散细化处理,研究了基于超剪切过程的原理和方法,并通过响应面实验对沉淀白炭黑进行了分散细化实验研究,结果表明超剪切技术对易团聚、难分散的液固态物料的分散细化具有极佳的效果。

The silica oxide is a kind of powder with high specific surface area, which is easily aggregated to become precipitated silica. In order to improve the dispersion and make its average particle size down to 2-5 μm, the principle and method of making use of a new kind of ultra-shearing technology on precipitated silica dispersing and disintegrating treatment were proposed. Testified by response surface regression research on precipitated silica, ultra-shearing technology shows that the performance of dispersion effect on the easily-aggregated and hardlydispersed liquid material is superior.