酰胺型聚羧酸系减水剂的合成研究  

Synthesis on Maleimide-structural Polycarboxylate Based Superplasticizer

作　　者：李继新[1] 王海玥[1] 赵远[1] 张瑶[1] 

机构地区：[1]沈阳工业大学石油化工学院,辽阳111003

出　　处：《材料导报》2015年第8期87-90,共4页Materials Reports

基　　金：辽宁省博士科研启动基金(20131084)

摘　　要：以过硫酸铵(APS)为引发剂,N-氨基甲酰马来酸(NCMA)、聚乙二醇单烯丙基醚(APEG)和甲基丙烯磺酸钠(SMAS)为聚合单体,合成N-氨基甲酰马来酸-甲基丙烯磺酸钠-聚乙二醇单烯丙基醚(SP)。通过FT-IR和1 H-NMR谱图对SP结构进行表征。以净浆流动度为指标,考察了引发剂用量、反应温度、SMAS/APEG物质的量比和NCMA/APEG物质的量比对净浆流动度的影响。结果表明:最佳反应条件为SMAS/APEG物质的量比1.2、NCMA/APEG物质的量比1.0、引发剂用量0.4%(质量分数)和反应温度50℃。以最佳反应条件制备的SP具有较好的工作性能和分散效果,掺量为0.2%(质量分数)时,减水率达25.7%,净浆流动度达311mm。Potycarboxylate based superplasticizer （SP） was prepared from N-carbamoylmaleamic aicd （NC- MA）, sodium methylallyl sulfonate（SMAS） and polyethylene glycol monoallyl ether （APEG） with ammonium persul- phate（APS） as initiator. The molecular structure of SP was characterized by FT-IR and 1H-NMR. Effects of SMAS/ APEG monomer mole ratio, NCMA/APEG monomer mole ratio, the degree of initiator and polymerization tempera- ture were investigated with initial fluidity as measurement indent The result showed that the optimal condition in- cludes： the monomer mole ratio of SMAS/APEG was 1.2, the monomer mole ratio of NCMA/APEG was 1.0, the amount of initiator was 0. 4% according to the mass and the reaction temperature was 50 ℃. The SP prepared under optimal condition has good plasticizing, the water-reducing ratio was 25. 7% and the initial fluidity of cement paste reached 311 mm with the dosage of SP was 0. 2% according to the mass.

关 键 词：N-氨基甲酰马来酸 甲基丙烯酸磺酸钠 聚羧酸系减水剂 

分 类 号：TQ317.4[化学工程—高聚物工业]