IA/AA/AMPS水煤浆分散剂的制备与表征  

IA/AA/AMPS coal-water slurry preparation and characterization of dispersant

作　　者：米小慧[1] 李小瑞[1] 李培枝[1] 王晨[1] 

机构地区：[1]陕西科技大学轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《功能材料》2012年第23期3261-3264,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50973057);陕西省自然科学基金资助项目(2012JQ2004);陕西科技大学科研启动基金资助项目(BJ11-10)

摘　　要：以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)-丙烯酸(AA)-衣康酸(IA)三元共聚物为水煤浆分散剂,通过对水煤浆液体流变性能的研究得到了分散剂的最佳合成条件:单体配比为m(AMPS)∶m(AA)∶m(IA)=3.8∶1∶1,反应温度为85℃,引发剂的添加量为单体总质量的5%,次亚磷酸钠的最佳添加量为单体总质量的10%;并通过FT-IR、XRD、GPC等对聚合物分散剂的结构、分子量进行测定。结果表明,共聚物中成功引入了磺酸基和羧酸基,重均相对分子质量约为1.6×104,多分散系数为3.41。The coal-water slurry dispersant was prepared by 2-acrylamide-2-methylpro panesulfonic acid（AMPS）,acrylic acid（AA） and itaconic acid（IA）（terpolymer）.Through the viscosity curves which was characteristic of this coal dispersant,the best synthetic conditions had been determined： monomer ratio：m（AMPS）∶m（AA）∶m（IA）=3.8∶1∶1,reaction temperature 85℃,the adding amount of initiator and sodium hypophosphite was 5% and 10% amount of monomers,respectively.The copolymer was characterized and analyzed by FT-IR,XRD and GPC.The results showed sulfonic group and carboxylic acid group were successfully introduced into copolymer and the dispersant,and the GPC showed the weight average molecular weight of about 1.6×10^4,polydispersity was 3.41.

关 键 词：分散剂 2-丙烯酰胺基-2-甲基丙磺酸 水煤浆 引发剂 ZETA电位 

分 类 号：TQ536[化学工程—煤化学工程] TQ517.4