化工进展2016，Vol.35Issue(11)：3645-3649,5.DOI:10.16085/j.issn.1000-6613.2016.11.039
聚羧酸减水剂的常温合成工艺
Synthesis process of polycarboxylic water reducer at ambient temperature
陈世明 1金一丰 1高洪军 1董楠1
作者信息
- 1. 浙江皇马科技股份有限公司，浙江上虞 312363
- 折叠
摘要
Abstract
The synthesis process of polycarboxylic water reducer was mainly composed of heating. The synthesis process at ambient temperature has been less reported. To solve this problem,the paper researched the influences of reaction temperature,holding time,feeding time of A and B,acid ether ratio,and ammonium persulfate(APS)weight on the performance of polycarboxylic water reducer that was synthesized by using methyl allyl polyethenoxy ether(TPEG)and acrylic acid(AA)as the main polymeric monomers. Orthogonal experiments showed that when the temperature is 30℃,holding time is 1.5 hours,feeding time of A is 2.25 hours,feeding time of B is 3.5 hours,n(AA)∶n(TPEG)=3.5∶1,and APS ratio is 0.5%,the polycarboxylic water reducer achieves optimum performance. When water-binder ratio is 0.29 and a dosage of 0.25% of such obtained water reducer is used,the initial cement paste fluidity reaches 240mm and the slump loss is 5mm after 1 hour. It has better dispersity and dispersion stability than other polycarboxylic water reducers at the same dosage.关键词
聚羧酸减水剂/异戊烯醇聚氧乙烯醚/常温/聚合Key words
polycarboxylic water reducer/TPEG/ambient temperature/polymerization分类
化学化工引用本文复制引用
陈世明,金一丰,高洪军,董楠..聚羧酸减水剂的常温合成工艺[J].化工进展,2016,35(11):3645-3649,5.
