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不饱和酯类单体对湿拌砂浆稳塑剂性能影响的研
作者：柯余良，方云辉，郭元强，张小芳，朱少宏，钟丽娜
（科之杰新材料集团有限公司，福建 厦门 361199）
摘要：以聚4-羟丁基乙烯基聚氧乙烯基醚、丙烯酸作为主要原材料，引入不同酯类单体，在过硫酸铵-次磷酸钠引发体系作用下制备湿拌砂浆稳塑剂，研究不同酯类单体及其用量对湿拌砂浆稳塑剂性能的影响。结果表明，砂浆稳塑剂中引入酯类单体可以提高其保塑性能，其中以4-乙烯基苯磺酸酯和甲基丙烯酰氧乙基琥珀酸单酯的效果较好，当用量为2%时，2 h稠度最佳，当继续增加用量时，砂浆出现泌水现象。并采用4-乙烯基苯磺酸酯合成砂浆稳塑剂MS-11，并复配一定量的助剂，制得砂浆添加剂KZJ-MS。实际工程应用表明，所配制砂浆的施工性能好、易泵送，符合工程技术要求。
关键词：湿拌砂浆；稳塑剂；酯类单体；稠度；泌水
中图分类号：TU528.042 文献标识码：A 文章编号：1001-702X（2019）05-0010-03
Research on effect of unsaturated esters on the performance of wet mix mortar stabilizers
KE Yuliang，FANG Yunhui，GUO Yuanqiang，ZHANG Xiaofang，ZHU Shaohong，ZHONG Lina
（KZJ New Materials Group Co. Ltd.，Xiamen 361199，China）
Abstract：Wet-mixed mortar stabilizers are synthesized by monomers including VPEG，AA and different ester monomers，with the initiating system of ammonium persulfate-sodium hypophosphite，the effects of the dosage and kind of ester monomers on wet-mixed mortar stabilizers performance were discussed. The results show that the introduction of ester monomers in the mortar stabilizer can improve the plasticity of the mortar stabilizer. Among them，4-vinylbenzenesulfonate and methacryloyloxyethyl succinate have better effects. When the dosage is 2%，the consistency of 2 h is the best，when the dosage is continued to increase，the mortar appears to be bleeding，and the mortar stabilizer（MS-11） is synthesized by 4-vinylbenzenesulfonate，and compounded with certain
amount of additives，the mortar additive KZJ-MS is obtained. Practical engineering shows that the mortar has good construction performance and easy pumping，and meet the technical requirements of the project.
Key words：wet-mixed mortar，stabilizer，ester monomer，consistency，bleeding phenomenon