降黏型聚羧酸高性能减水剂的合成及性能评价  

Synthesis and performance evaluation of viscosity-reducing polycarboxylate superplasticizer

作　　者：陈国新[1,2,3,4] 祝烨然 杜志芹[1,2,3,4] 朱素华 CHEN Guoxin;ZHU Yeran;DU Zhiqin;ZHU Suhua(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Nanjing R&D Hi-Tech Co.Ltd.,Nanjing 210024,China;Research Center on New Materials in Hydraulic Structures of Ministry of Water Resources,Nanjing 210029,China;Anhui Ruihe New Materials Co.Ltd.,Maanshan 243000,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京瑞迪高新技术有限公司,江苏南京210024 [3]水利部水工新材料工程技术研究中心,江苏南京210029 [4]安徽瑞和新材料有限公司,安徽马鞍山243000

出　　处：《新型建筑材料》2022年第4期19-21,25,共4页New Building Materials

摘　　要：以乙烯基聚氧乙烯醚(HM-008)、丙烯酸(AA)、苯乙烯(St)、丙烯酸甲酯(MA)等为单体,通过水溶液聚合制备了一种降黏型聚羧酸系减水剂PC-418F,并采用水泥净浆流速T_(200)、Marsh时间及混凝土T_(500)、倒坍落度筒时间进行了降黏性能比较。结果表明,掺PC-418F的水泥净浆和混凝土在流动度相当的前提下,与市售标准型及降黏型聚羧酸减水剂相比,具有更短的净浆T_(200)、Marsh时间、混凝土T_(500)及倒坍落度筒时间,降黏性能优异。A viscosity-reducing polycarboxylate superplasticizer PC-418F was prepared by water solution polymerization with the vinyl polyoxyethylene ether monomer(HM-008),acrylic acid(AA),andstyrene and methyl acrylate(MA).The viscosity reduction performance was compared by cement paste velocity T_(200),Marsh time,concrete time T_(500) and delivery time of inverted slump cone(DTISC).The results show that,comparing with the commercially available standard and viscosity reducing type polycarboxylate superplasticizer,the cement paste or concrete mixed with PC-418F has shorter T_(200),Marsh time,concrete T_(500) and DTISC at the same cement paste fluidity or concrete slump,the synthesized product has better viscosity-reducing performance.

关 键 词：聚羧酸减水剂 降黏型 合成 性能 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]