阳离子型高分子分散剂的制备及应用研究  

Preparation of Cationic Polymeric Dispersant and Study on Its Application

作　　者：李辉茹[1] 孙晓然[1] 

机构地区：[1]河北理工大学化工与生物技术学院,河北唐山063009

出　　处：《上海化工》2009年第4期13-16,共4页Shanghai Chemical Industry

摘　　要：通过自由基引发溶液聚合,以二甲基二烯丙基氯化铵(DMDAAC)为阳离子共聚单体,过硫酸钾(KPS)为引发剂,与羟乙基纤维素(HEC)共聚制得阳离子型高分子分散剂PHD,通过正交实验得到最优反应条件为:m(HEC)∶m(DMDAAC)=0.6∶10,引发剂w(KPS)=1%(以DMDAAC的质量计,以下同),反应温度75℃,反应时间2h。用IR对产物进行了表征,将产品(PHD)应用到高岭土泥浆中,对其流动性能进行测试,并通过SEM对分散体系的微观形貌进行分析,结果表明,PHD对陶瓷用高岭土具有良好的分散效果。Cationic polymer dispersant PHD has been synthesized by free radical copolymerization with dimethyldiallyl ammonium chloride （DMDAAC） and hydroxyethyl cellulose （HEC） in aqueous solution, using potassium sulfate （KPS） as the initiator. The optimum reaction conditions were obtained by orthogonal experiments： m（HEC）：m（DMDAAC）=0.6：10, m（KPS）/m（DMDAAC）=1%, reaction temperature 75℃ and reaction time 2 h. The structures of copolymer were characterized by IR. The rheological behavior of Kaolin slurry treated by PHD was researched. The microscopic pattern of dispersive system was analyzed by SEM. The results indicated that PHD has a good dispersion effect to ceramic Kaolin slurry.

关 键 词：分散剂 高岭土 羟乙基纤维素 二甲基二烯丙基氯化铵 接枝共聚 

分 类 号：TQ174.4[化学工程—陶瓷工业]