CAJ | 학술논문

由沉淀法制备的白炭黑粉体因颗粒微细、比表面积大和表面羟基间的结合作用而形成多次团聚体，严重影响其填充补强等性能的发挥。对沉淀法白炭黑进行了颗粒聚集行为和在水介质中的解聚、分散试验研究。结果表明，采用搅拌磨对白炭黑进行湿法研磨，并添加分散剂可使白炭黑颗粒解聚并有效分散，在研磨时间1.5 h、球料比5∶1、浆体质量分数10%、分散剂用量6%等试验条件下对白炭黑解聚分散，白炭黑颗粒D50由25.2μm降为11μm。
유침정법제비적백탄흑분체인과립미세、비표면적대화표면간기간적결합작용이형성다차단취체，엄중영향기전충보강등성능적발휘。대침정법백탄흑진행료과립취집행위화재수개질중적해취、분산시험연구。결과표명，채용교반마대백탄흑진행습법연마，병첨가분산제가사백탄흑과립해취병유효분산，재연마시간1.5 h、구료비5∶1、장체질량분수10%、분산제용량6%등시험조건하대백탄흑해취분산，백탄흑과립D50유25.2μm강위11μm。
Silica powder prepared by precipitation method had formed among multiple aggregates because of its particles ifning, large surface area and interaction among the hydroxyl groups in particls surface. So, its reinforcing properties of iflling were seriously affecting. The research on the aggregation behavior of precipitated silica particles and its disaggregation and dispersion in aqueous medium were carried out. The results showed that the wet grinding of silica in stirred mill and adding dispersant can make silica particles be effectively dispersed and disaggregaed, andD50 of silica particles reduced by a 25.2μm to 11μm after disaggregation and dispersion with follow conditions : grinding time 1.5 h, the ball feed ratio 5∶1, slurry concentration of 10%, the amount of dispersant 6%.