酯化-共聚合成高效减水剂WD-1

广东工业大学学报 ›› 2006, Vol. 23 ›› Issue (2): 24-28.

酯化-共聚合成高效减水剂WD-1

广东工业大学轻工化工学院；广东工业大学轻工化工学院广东广州510090；广东广州510090；

出版日期:2006-04-06 发布日期:2006-04-06
基金资助:
2003年广东工业大学学生课外科技活动立项资助(2003)

Synthesis of High-Performance Water-reducing Agent WD-1 by Process of Esterification-Copolymerization

(Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090,China)

Online:2006-04-06 Published:2006-04-06

摘要/Abstract

摘要： 以甲基丙烯酸与聚乙二醇为主要原料,经酯化制得聚乙二醇丙烯酸酯,将酯化物与烯丙基磺酸钠、甲基丙烯酸共聚制备出聚羧酸系高效减水剂WD-1.对产品进行了红外光谱分析,探讨了聚乙二醇的聚合度(n)、聚乙二醇封端与否以及酯化温度对聚羧酸系减水剂主要性能的影响.结果表明:采用n=9的聚乙二醇单甲醚进行酯化,温度为80℃时,产品具较好的综合性能;产品红外谱图与设计分子结构相符;聚羧酸系高效能减水剂WD-1可以使水泥具有较好的净浆流动度,混凝土减水率可达26.9%.

关键词: 聚羧酸系；减水剂；酯化；共聚；

Abstract: In this paper,high performance polycarboxylic type water-reducing agent WD-1 is synthesized in following steps: 1.Methyl acrylic acid is esterized with polyethylene glycol;2.The ester intermediate is polymerized with sodium allylsulfonate and methyl acrylic acid.The polymerization degree of PEG(n),the temperature of esterification(T)and their effect on major performance of water reducing agent WD-1 are discussed.The product is characterized by IR;and the total performance is tested.The results show that the water-reducing ratio of WD-1 is 26.9% when n=9 and T=80?℃.

Key words: polycarboxylic； water-reducing agent； esterification； copolymerization；

周智鹏；王飞镝；武文超；邓海娥； . 酯化-共聚合成高效减水剂WD-1[J]. 广东工业大学学报, 2006, 23(2): 24-28.

ZHOU Zhi-peng,WANG Fei-di,WU Wen-chao,DENG Hai-e. Synthesis of High-Performance Water-reducing Agent WD-1 by Process of Esterification-Copolymerization[J]. Journal of Guangdong University of Technology, 2006, 23(2): 24-28.

参考文献

[1] 王国建,黄韩英. 聚羧酸盐高效减水剂的合成与表征[J]. 化学建材. 2003(06)

[2] 李崇智,李永德,冯乃谦. 聚羧酸系高性能减水剂的试验研究[J]. 化学建材. 2002(02)

[3] 赵石林,岳阳,黄小彬. 聚羧酸盐多元共聚物高效减水剂的研制[J]. 化学建材. 2000(04)

[1] 熊大玉,王小虹编著.混凝土外加剂[M]. 化学工业出版社, 2002

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