CAJ | 학술논문

详细研究了氧化铝悬浮液的分散行为及固含量、pH值和聚丙烯酸(PAA)添加量对分散行为的影响.实验结果表明,固含量、pH值和PAA添加量对氧化铝悬浮液的分散行为有显著影响.粘度法及Zeta电位测试法所反映的悬浮液分散性随pH值和分散剂添加量的变化规律基本一致.当pH=9～10、分散剂添加量的质量分数为2.0%～2.5%时粘度最低、Zeta电位绝对值最大、分散效果最好.分散剂添加量存在最佳范围,且最佳范围不随固含量的变化而改变.随固含量的增加,粘度开始缓慢上升,到达一定程度后迅速增大.
상세연구료양화려현부액적분산행위급고함량、pH치화취병희산(PAA)첨가량대분산행위적영향.실험결과표명,고함량、pH치화PAA첨가량대양화려현부액적분산행위유현저영향.점도법급Zeta전위측시법소반영적현부액분산성수pH치화분산제첨가량적변화규률기본일치.당pH=9～10、분산제첨가량적질량분수위2.0%～2.5%시점도최저、Zeta전위절대치최대、분산효과최호.분산제첨가량존재최가범위,차최가범위불수고함량적변화이개변.수고함량적증가,점도개시완만상승,도체일정정도후신속증대.
Dispersion behavior of alumina suspension and effects of the solid loading,pH value and polyacrylic acid(PAA) content on the dispersion behavior are examined in detail.The experimental results show that the solid loading,pH value and PAA content significantly influence the dispersion behavior.The variation tendencies of the suspension dispersity with the changes of pH value and dispersant content from the viscosity measurement are almost consistent with those from the Zeta potential measurement.The viscosity achieves the minimum,absolute value of the Zeta potential achieves the maximum and the dispersity achieves the best at pH=9～10 and the dispersant content 2.0%～2.5%(wt).The dispersant content has a suitable range,and the suitable range does not change with the solid loading.The viscosity increases slowly at first and rapidly after achieving a certain degree,with enhancing the solid loading.