响应面法优化微波辐射马来酸酐高效减水剂的合

关键字：马来酸酐,高效减水剂,响应面法,微波辐射

（1.广西科技大学鹿山学院，广西 柳州  545616；2.广西科技大学 生物与化学工程学院，广西 柳州  545006） 

    摘要：利用马来酸酐共轭结构易共聚、难均聚的特点，以马来酸酐（MAH）、烯丙基聚氧乙烯醚（APEG-2400）、甲基丙烯磺酸钠（SMAS）为原料，结合微波辐射高效清洁优势，在单因素试验基础上，采用响应面法对高效减水剂制备工艺进行优化，制备出分子结构含有阴离子基团—COO-、—SO3-及长侧链聚氧乙烯基的高性能阴离子型马来酸酐类高效减水剂。结果表明，于最佳工艺条件下制备的高效减水剂，当折固掺量为0.15%、0.3%、0.5%时，水泥净浆流动度分别为305、312 、326 mm，且折固掺量0.3%时砂浆减水率达35.4%。该工艺高效节能、反应过程易控，产品分散性能良好，有利于实现高效减水剂低成本化和绿色化生产。
    关键词：马来酸酐；高效减水剂；响应面法；微波辐射
    中图分类号：TU528.042.2          文献标识码：A          文章编号：1001-702X（2017）02-0015-05

Optimization of microwave-assisted synthesis of maleic anhydride-type superplasticizer
using response surface analysis
LUO Ying1，LI Yanqing2，LU Zhilong1，KONG Hongxing2，WANG Qinwei2，LI Lijun1，2
（1.Lushan College of Guangxi University of Science and Technology，Liuzhou 545616，China；2.College of Biological and Chemical Engineering，Guangxi University of Science and Technology，Liuzhou 545006，China）

    Abstract：Maleic anhydride had advantages of easy copolymerization and difficult homopolymerization. On the basis of single factor experiments，maleic anhydride-type superplasticizer was synthesized from maleic anhydride（MAH），allyl polyethenoxy ether（APEG-2400）and sodium methylallyl sulfonate（SMAS） combined with efficient clean advantage of microwave irradiation using response surface analysis，which contained anion group，—COO- and —SO3-，and polyoxyethylene side chain. The results showed that the fluidity of cement paste could reach 305 mm，312 mm and 326 mm respectively when maleic anhydride-type superplasticizer was added 0.15%，0.3% and 0.5%，and water-reducing ratio was 35.4% with the dosage of 0.3% superplasticizer. The approach had superiority in high efficiency，energy saving and easy control in reaction process，and the superplasticizer had good dispersivity，so the preparing technology was conductive to realize the preparation of superplasticizer with low cost and eco-friendliness.
    Key words：maleic anhydride，superplasticizer，response surface approach，microwave irradiation