一种高性能醚型聚羧酸系减水剂的合成研究  

Systhesis of Ether Polycarboxylate Superplasticizer

作　　者：马斐[1] 王安建[1] 黄小珠[1] 王颖[1] 杨君[1] 

机构地区：[1]中海油能源发展股份有限公司石化公司,广东惠州516086

出　　处：《广东化工》2014年第17期49-50,60,共3页Guangdong Chemical Industry

摘　　要：设计四元单体共聚体系,以聚乙二醇异戊烯丙基醚2400(TPEG)、丙烯酸(AA)、甲基丙烯磺酸钠(SMAS)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)在过硫酸铵(APS)为引发剂存在下共聚,一步法合成高性能的聚羧酸减水剂。经正交实验优选出最佳合成工艺条件如下:AA/TPEG摩尔比为3∶1;AMPS/TPEG摩尔比为0.3∶1,SAS/TPEG摩尔比为0.8∶1,引发剂APS的用量为共聚单体总质量的4%,反应温度为70℃、反应时间为8 h。所合成的聚羧酸减水剂具有优异的减水性能和良好的保坍性能,并能大幅提高所得混凝土拌合物的强度。The tetra copolymer of polyethylene glycol （peg） isoamyl allyl ether 2400（TPEG）, acrylic acid （AA）, sodium methallyl sulfonate （SMAS）, 2-acrylamide-2-methyl propane sulfonic acid （AMPS） were used to synthesis polycarboxylic superplasticizer by one-step in the presence of initiator ammonium persulfate （APS）. The optimum synthetic conditions for the macromonomer were obtained by orthogonal experiments as follows： the molar ratio of AA to TPEG is 3：1; the molar ratio of AMPS to TPEG is 0.3：1, the molar ratio of SAS to TPEG is 0.8 ： 1, the amount of APS is the 5 % according to the mass of macromonomer The synthesised polycarboxylic superplasticizer has better water reducing and lower slump loss properties for concrete, and can improve the strength of the concrete mixture in a large scale.

关 键 词：聚羧酸减水剂 四元单体 正交实验 

分 类 号：O632.51[理学—高分子化学]