| 低温合成LPEG型聚羧酸减水剂 |
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| 引用本文： | 刘思扬,杨志飞,何年,罗率,舒豆豆. 低温合成LPEG型聚羧酸减水剂[J]. 新型建筑材料, 2020, 0(4): 90-93,104 |
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| 作者姓名： | 刘思扬 杨志飞 何年 罗率 舒豆豆 |
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| 作者单位： | 四川同舟化工科技有限公司 |
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| 摘 要： | 乙二醇单乙烯基聚氧乙烯醚(LPEG)作为一种新型的大单体,具有比普通聚羧酸大单体更高的反应活性,合成的聚羧酸减水剂(PCE)具有更好的工作性能。以LPEG、丙烯酸(AA)、丙烯酸羟乙酯(HEA)为聚合单体,在低温氧化还原引发体系下合成PCE,并研究了反应温度、FeSO4用量、酸醚比、还原剂及链转移剂用量等对PCE性能的影响。结果表明,低温合成的新型PCE与由传统大单体合成的PCE相比,具有更好的保坍性与混凝土增强效果。
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| 关 键 词： | 乙二醇单乙烯基聚氧乙烯醚 聚羧酸减水剂 反应条件 低温合成 |
Low temperature synthesis of LPEG type PCE |
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| LIU Siyang,YANG Zhifei,HE Nian,LUO Shuai,SHU Doudou. Low temperature synthesis of LPEG type PCE[J]. New Building Materials, 2020, 0(4): 90-93,104 |
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| Authors: | LIU Siyang YANG Zhifei HE Nian LUO Shuai SHU Doudou |
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| Affiliation: | (Sichuan Tongzhou Chemical Technology Co.Ltd.,Mianyang 621000,China) |
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| Abstract: | LPEG monomer is a new type of polycarboxylate superplasticizer monomer,has higher reactivity than ordinary polycarboxylate macromonomer in recent years,synthetic PCE has better working performance.Using a new type of ethylene glycol monovinyl ethoxylate(LPEG),acrylic acid(AA)and hydroxyethyl acrylate(HEA)as a polymerization monomer,Synthesis of PCE under low temperature redox initiation system,experiment and discuss the effects of reaction temperature,FeSO4 dosage,acid-ether ratio,reducing agent and chain transfer agent dosage on PCE performance.Compared with the traditional PCE,the new PCE has better slump retention and concrete workability. |
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| Keywords: | ethylene glycol monovinyl ethoxylate polycarboxylate water reducer reaction conditions low temperature synthesis |
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