一种两性聚羧酸减水剂对水泥净浆及混凝土早期性能的影响  

Synthesis and Early Performance of Amphoteric Polycarboxylate Superplasticizers

作　　者：何廷树[1] 邹亚婷 杨仁和[1] 徐一伦 李同新 HE Ting-shu;ZOU Ya-ting;YANG Ren-he;XU Yi-lun;LI Tong-xin(College of Materials and Mineral Resources,Xi＇an University of Architecture and Technology,Xi＇an 710055,China;Shaanxi Youbang New Material Technology Co.,Ltd.,Xi＇an 712046,China)

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]陕西友邦新材料科技有限公司,西安712046

出　　处：《硅酸盐通报》2018年第6期1852-1855,1867,共5页Bulletin of the Chinese Ceramic Society

基　　金：陕西省工业攻关项目(2016GY-205)

摘　　要：通过引入2-丙烯酰胺-2-甲基丙磺酸(AMPS)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)两种小单体,并采用相对分子量较大的甲基烯丙基聚氧乙烯醚(HPEG)大单体,合成了一种两性聚羧酸减水剂ZQ-3,使用红外光谱对其结构进行了确证。将该减水剂与另外三种聚羧酸减水剂进行了性能对比研究。水泥净浆实验结果表明:减水剂ZQ-3具有良好的分散性及分散性经时保持性能,对净浆的凝结时间影响不大;混凝土实验及XRD分析表明:减水剂ZQ-3能够促进水泥的早期水化,明显提高混凝土蒸养脱模强度和早期强度。A amphoteric polycarboxylate superplasticizer（APC） ZQ-3 with length side chain,2-acrylamido-2-methylpropane sulfonic acid（AMPS） and cationic monomer methacrylatoethyl trimethyl ammonium chloride（DMC） was synthesized through radical polymerization. The structure was determined by FTIR. The properties of ZQ-3 were studied and compared with other three polycarboxylate superplasticizer. The results show that ZQ-3 has better dispersion and better retention of dispersion,and little effect on paste setting time. Concrete test and XRD analysis show that ZQ-3 can promote the early hydration of cement,and obviously improve the early strength of steam-curing concrete.

关 键 词：两性聚羧酸减水剂 阳离子单体 长侧链 蒸养 早强 

分 类 号：TU528[建筑科学—建筑技术科学]