聚羧酸减水剂的合成与性能研究
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摘要
以甲基烯丙基聚氧乙烯醚(TPEG)、丙烯酸(AA)、甲基丙烯磺酸钠(SMAS)为原料,过硫酸钾(KPS)为引发剂,在水溶液中进行自由基聚合反应合成聚羧酸减水剂(PC)。探讨了丙烯酸与甲基烯丙基聚氧乙烯醚的摩尔比、过硫酸钾用量、甲基丙稀磺酸钠用量以及反应温度对聚羧酸减水剂性能的影响。确定最佳合成工艺参数为:丙烯酸与甲基烯丙基聚氧乙烯醚的摩尔比为3.5﹕1,过硫酸钾用量为0.6%,甲基丙稀磺酸钠用量为3.0%,反应最佳温度为80℃。利用红外光谱仪对自制的聚羧酸减水剂进行分子结构表征,证明产物中包含有预先设计的官能团,达到了分子结构设计的预期目标。
Using methyl allyl polyoxyethylene ether(TPEG),acrylic acid(AA) and sodium methacrylate(SMAS) as raw materials and potassium persulfate(KPS) as an initiator,a polycarboxylate superplasticizer(PC) was synthesized by free radical polymerization in an aqueous solution.The effects of the molar ratio of acrylic acid and methylallyl polyoxyethylene ether,the amount of potassium persulfate,the amount of sodium methyl methacrylate,and the reaction temperature on the performance of polycarboxylate superplasticizers were investigated.The optimum synthetic process parameters were determined as follows:the molar ratio of acrylic acid to methylallyl polyoxyethylene ether was 3.5:1,the amount of potassium persulfate was 0.6%,and the amount of sodium methyl methacrylate was 3.0%.The temperature is 80℃.The molecular structure of the self-made polycarboxylate superplasticizer was determined by infrared spectroscopy,and it was proved that the product contained pre-designed functional groups and the expected target of molecular structure design was achieved.
Using methyl allyl polyoxyethylene ether(TPEG),acrylic acid(AA) and sodium methacrylate(SMAS) as raw materials and potassium persulfate(KPS) as an initiator,a polycarboxylate superplasticizer(PC) was synthesized by free radical polymerization in an aqueous solution.The effects of the molar ratio of acrylic acid and methylallyl polyoxyethylene ether,the amount of potassium persulfate,the amount of sodium methyl methacrylate,and the reaction temperature on the performance of polycarboxylate superplasticizers were investigated.The optimum synthetic process parameters were determined as follows:the molar ratio of acrylic acid to methylallyl polyoxyethylene ether was 3.5:1,the amount of potassium persulfate was 0.6%,and the amount of sodium methyl methacrylate was 3.0%.The temperature is 80℃.The molecular structure of the self-made polycarboxylate superplasticizer was determined by infrared spectroscopy,and it was proved that the product contained pre-designed functional groups and the expected target of molecular structure design was achieved.
引文
[1]何天白,胡汉杰.功能高分子材料[M].北京:化学工业出版社,2001:330-339.
[2]孟巧峰,冯军强.混凝土技术的现状和发展[J].山西建筑,2007,33,180-181.
[3]唐蓉萍,伍家卫,杨兴锴.聚羧酸系高效减水剂的合成及性能研究进展[J].中国建材科技,2010,12:25-28.
[4]陈建奎.混凝土外加剂原理与应用[M].北京:中国计划出版社,2004.
[5]周志威,吕生华,李芳.聚羧酸系高效减水剂的研究进展[J].化学建材,2006,22,34-38.
[6]潘祖仁.高分子化学[M].第四版,北京:化学工业出版社,2007.
[7]李安.醚类聚羧酸高性能减水剂的开发与性能研究[D].2012,29-30.
[8]王子明.聚羧酸系高性能减水剂制备、性能与应用[M].中国建筑工业出版社,2009.
[2]孟巧峰,冯军强.混凝土技术的现状和发展[J].山西建筑,2007,33,180-181.
[3]唐蓉萍,伍家卫,杨兴锴.聚羧酸系高效减水剂的合成及性能研究进展[J].中国建材科技,2010,12:25-28.
[4]陈建奎.混凝土外加剂原理与应用[M].北京:中国计划出版社,2004.
[5]周志威,吕生华,李芳.聚羧酸系高效减水剂的研究进展[J].化学建材,2006,22,34-38.
[6]潘祖仁.高分子化学[M].第四版,北京:化学工业出版社,2007.
[7]李安.醚类聚羧酸高性能减水剂的开发与性能研究[D].2012,29-30.
[8]王子明.聚羧酸系高性能减水剂制备、性能与应用[M].中国建筑工业出版社,2009.