摘要
通过对影响马来酸酐系混凝土减水剂合成工艺的几种因素进行探讨,优化了马来酸酐系混凝土减水剂的合成工艺。通过试验得出:当使用用量为反应物重量4倍的甲苯作为带水剂,掺加5%～6%的自制复合催化剂时,酯化反应的酯化率较高;当选用分子量为600的聚乙二醇单甲醚作为聚合反应单体,酸醇比为6.32∶0,掺加5%的引发剂时,所制备的减水剂的性能较好,掺加减水剂的水泥净浆的初始流动度较高且经时流动度损失较小。
Several influence factors of synthesis process of maleic acid type concrete water reducer are discussed, so the process is optimized. Conclusion is drawn from test：when use toluene as water carrier, the amount of water carrier is four times of the amount of reactors, and use the catalyst synthesized in laboratory,the amount is 5%-6% of reactors,the high esterification rate is obtained;when use polyethylene glycol,the molecular weight of which is 600, the ratio of acid to alcohol is 6,3 ： 16, add initiator, the amount is 5% of reactors, under the prior conditions, the property of the water reducer composed is excellent ,the initial fluidity of cement paste is high, and fluidity loss is much little.
出处
《混凝土》
CAS
CSCD
北大核心
2007年第9期51-53,56,共4页
Concrete
基金
国家"973"项目资助(2001CB610704-3)
关键词
马来酸酐系减水剂
带水剂
侧链长度
maleic acid type water reducer
water cartier
length of side chain
