摘要
以氯乙酸(CAA)为改性剂,对不同分子量的烯丙基聚乙二醇醚(APEG)进行封端制得羧基改性的APEGC,APEGC与异戊烯醇聚氧乙烯醚(TPEG)和丙烯酸(AA)进行水溶液自由基共聚,合成聚羧酸减水剂(CPCE),并对其性能进行了测试。结果表明:羧酸基改性的APEG-500为最佳共聚单体,共聚体系中n(TPEG):n(APEGC):n(AA)的最佳配比为1.0:0.25:4.0,引发剂用量为单体总量的1.7%,合成的CPCE分散性好、保坍性高,对不同水泥及矿物掺合料的适应性好。
APEG, APEGC and isoprenyl alcohol polyoxyethylene ether(TPEG) were prepared by capping with different molecular weight allyl polyglycol ether(APEG) with chloroacetic acid(CAA) as modifier. And acrylic acid(AA) were prepared by free radical copolymerization and polycarboxylate water reducing agent(CPCE), and their properties were tested.The results showed that the optimal ratio of n(TPEG): n(APEGC): n(AA) was 1.0: 0.25: 4.0 in the copolymer system, and the initiator of APEG-500 was the best comonomer. The amount of monomer for the total 1.7%, synthetic CPCE good dispersion, high stability, the different cement and mineral admixture of good adaptability.
作者
黄月初
高玉军
HUANG Yue-chu GAO Yu-jun(CCCC Wuhan Engineering Design and Research Co.Ltd CCCC SHEC Wuhan Harbor New Material Co.Ltd, Wuhan 430040, China)
出处
《胶体与聚合物》
2017年第3期128-131,共4页
Chinese Journal of Colloid & Polymer
关键词
烯丙基聚乙二醇醚
氯乙酸
羧基改性
异戊烯醇聚氧乙烯醚
共聚
Allyl Polyglycol Ether
Chloroacetic Acid
Carboxylic Acid Modification
Isobutyl Alcohol Polyoxyethylene Ether
Copolymerization
作者简介
黄月初(1990-),男,湖北孝感人。助理工程师,从事混凝土外加剂及新型建筑材料方面的研究。E-mail:449026321@qq.com