一种新型水煤浆聚羧酸分散剂大单体的制备  

Synthesis of a macromer for polycarboxylate acid CWS additive

作　　者：任军哲 魏辉[2] 张光华[2] 张亚青[2] 

机构地区：[1]陕西煤化能源有限公司,陕西长武713600 [2]教育部轻化工助剂化学与技术重点实验室陕西科技大学,陕西西安710021

出　　处：《应用化工》2011年第3期411-413,共3页Applied Chemical Industry

基　　金：陕西省自然科学基金重点项目(2009JZ002);陕西科技大学研究生创新基金资助项目

摘　　要：为探索一种优化的聚羧酸系分散剂大单体生产工艺,以衣康酸、聚乙二醇为原料,考察了反应物配比、反应时间、反应温度、催化剂对活性大单体酯化率的影响。实验表明,较佳反应条件为:催化剂为对甲苯磺酸,n(衣康酸)∶n(聚乙二醇)=1∶1.5,反应温度为85℃,反应时间5 h。表面性能研究结果表明,该表面活性剂有较好的表面活性,在25℃下c,mc为5.01 mmol/L,在cmc时的γ=47.1 mN/m,Krafft点<0℃。In order to explore an optimized process for preparing a novel itaconic acid,polyethylene glycol as raw materials were used.The influences of reaction parameters on the esterification rate,such as reactants ratio,time,temperature and solvent,were researched.The optimal reaction conditions for the synthesis were as follows：n（IA） ∶ n（PEG）=1 ∶ 1.5,reaction temperature 85 ℃ and reaction time 5 h.The surface properties of the product were determined.The results showed that the emulsifier possessed good surface activity,at 25 ℃ the micelle concentration（cmc） is measured as 5.01 mmol/ L,surface tension（γ） at the cmc is measured as 47.1 mN/m and Krafft point 0 ℃.

关 键 词：聚乙二醇 聚羧酸大单体 水煤浆 合成 

分 类 号：TQ536[化学工程—煤化学工程] TQ517.4