目录
化学建材
首页

蓖麻油 基聚羧酸减水剂的合成及性能研究

作者:秦娜娣1,2,刘心雨2,丁建飞2,邵荣2,许伟2,张义东2

关键字:蓖,麻油,基聚,羧酸,减,水剂,的,合成,及,性能,

 
(1.江苏大学,江苏 镇江  212013;
2.盐城工学院,江苏 盐城  224051)
    摘要:以甲基 烯丙基聚氧乙烯醚(TPEG)、蓖麻油(C.O)、反丁烯二酸(FA)为单体,巯基乙酸(TGA)为链转移剂,过氧化氢(H2O2)和抗坏血酸(Vc)氧化还 原体系为引发剂,在常温 下通过自由基聚合反应制得新型高性能聚羧酸减水剂。试验结果表明:在聚羧 酸减水剂分子主链上嫁接蓖麻油分子基团可以提高减水剂的分散性和分散保持性;其最佳合成工艺为:n(TPEG)∶n(C.O)∶n(FA)∶n(H2O2)∶n(Vc)∶n(TGA)=1∶0.43∶2.48∶0.4∶0.023∶0.16,反应温度25 ℃,TGA和Vc混合水 溶液滴加速率为0.3 ml/min。红外光 谱分析结果表明,C.O已成功 接枝到聚羧酸减水剂分子中。
    关键词:蓖麻油;聚羧酸减水剂;合成;性能
    中图分类号:TU528.042+.2        文献标识码:A        文章编号:1001-702X(2020)10-0072-04
 
Study on synthesis and properties of castor oil-based polycarboxylate superplasticizer
QIN Nadi1,2,LIU Xinyu2,DING Jianfei2,SHAO Rong2,XU Wei2,ZHANG Yidong2
(1.Jiangsu University,Zhenjiang 212013,China;2.Yancheng Institute of Technology,Yancheng 224051,China)
    Abstract:Using methyl allyl polyoxyether(TPEG),castor oil(C.O),fumaric acid(FA) as monomer,thioglycolic acid(TGA) as chain transfer agent,hydrogen peroxide(H2O2) and ascorbic acid(Vc) redox system as initiator,high performance polycarboxylate superplasticizer was synthesized by solution free radical polymerization at room temperature. The optimum polymerization conditions were as follows:the reaction temperature is 25 ℃,the dripping rate of aqueous solution of TGA and Vc is 0.3 ml/min,the molar ratio of reactants is n(TPEG)∶n(C.O)∶n(FA)∶n(H2O2)∶n(Vc)∶n(TGA)=1∶0.43∶2.48∶0.4∶0.023∶0.16. FTIR results showed that the castor oil group has been introduced into the structure of the prepared superplasticizer.
    Key words:castor oil,polycarboxylate superplasticizer,synthesis,properties

网站地图