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基于响应面法的六碳型聚羧酸减水剂的工艺优化及其应用研究
作者：张晓宇1，甄卫军1，关寿禄2，陈俊2
（1.石油天然气精细化工教育部重点实验室，新疆大学 化工学院，新疆 乌鲁木齐 830017；
2.新疆天铁工程材料有限公司，新疆 乌鲁木齐 830013）
摘要：以乙二醇单乙烯基聚氧乙烯醚（EPEG）、丙烯酸为主要原材料，在过氧化氢-硫酸亚铁/抗坏血酸引发体系下通过水溶液自由基聚合法合成一种高性能六碳型聚羧酸减水剂。分别以初始、1 h水泥净浆流动度为响应值，基于Box-Behnken设计的响应面法优化工艺配方为：酸醚比4.90，过氧化氢、硫酸亚铁/抗坏血酸、巯基丙酸、氢氧化钠的用量分别为EPEG质量的0.89%、0.18%、0.44%、1.05%。性能测试结果表明，六碳型聚羧酸减水剂较市售的四碳、五碳型减水剂的分散性和分散保持性更好，同时与新疆地产水泥、砂、石集料的配伍性更好，具有一定的工程应用价值。
关键词：聚羧酸减水剂；响应面优化法；数学模拟；性能测试；应用
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2022）10-0008-06
Study on process optimization of hexa-carbon polycarboxylate superplasticizer based on response surface methodology and its application
ZHANG Xiaoyu1，ZHEN Weijun1，GUAN Shoulu2，CHEN Jun2
（1.Key Laboratory of Oil and Gas Fine Chemicals，Ministry of Education and Xinjiang Uygur Autonomous Region，School of Chemical Engineering and Technology，Xinjiang University，Urumqi 830017，China；
2.Xinjiang Tiantie Engineering Materials Limited Company，Urumqi 830013，China）
Abstract：The high performance hexa-carbon polycarboxylate superplasticizer was synthesized with ethylene glycol monovinyl polyoxyethylene ether and acrylic acid as raw material by free radical polymerization in aqueous solution under the hydrogen peroxide-ferrous sulfate/ascorbic acid initiator system conditions. Initial fluidity and 1 h fluidity of cement paste were taken as response values respectively，the response surface optimization process formula based on Box-Behnken design was as follows：the ratio of acid to ether was 4.90，and the hydrogen peroxide，ferrous sulfate/ascorbic acid，mercaptopropionic acid and sodiumhydroxide dosage accounted for 0.89%，0.18%，0.44% and 1.05% of polyether mass，respectively. Through the performance test of the validation test，the results showed that the dispersity，slurry fluidity and fluidity retention of the hexa-carbon polycarboxylate superplasticizer were significantly improved compared with the commercial tetra-carbon and penta-carbon polycarboxylate superplasticizer prepared under these optimized conditions，and had better compatibility with Xinjiang local cement，sand，stone aggregate，which will have certain engineering application value.
Key words：polycarboxylate superplasticizer，response surface optimization，mathematical simulation，performance test，application