期刊文献+

常温合成聚羧酸减水剂的方法及性能研究 被引量:8

Synthesis and performance research of polycarboxylate superplasticizer at normal temperature
下载PDF
导出
摘要 以改性聚醚大单体(HPEG)、丙烯酸(AA)为原材料,巯基乙酸(TGA)为链转移剂,在双氧水(H2O2)-酒石酸(TA)体系下,采用一步合成方法,在常温条件下制备高性能聚羧酸减水剂.正交实验结果表明,其最佳合成工艺为:n(AA)∶n (HPEG) =1.67,n (H2O2)∶n (TGA)=10∶3,n(H2O2)∶n (TA) =4,反应温度为20~30℃,反应时间为5h;合成减水剂的掺量为0.33%时,水泥净浆初始流动度达227 mm,且1h内基本无损失. Using modified polyether macromer(HPEG),acrylic acid (AA) as the raw materials,thioglycolic acid (TGA) as the chain transfer agent,we can compose them in one step to polycarboxylate superplasticizer in hydrogen peroxide(H2O2)-tartaric acid(TA) system at normal temperature.The orthogonal experimental results indicate that the optimum technology of synthesis are shown as follows∶ n (AA) ∶n (HPEG) =1.67,n (H2O2) ∶n (TGA) =10∶3,n (H2O2) ∶n (TA) =4,the reaction temperature is 20~30 ℃,the reaction time is 5 h.When the volume of superplasticizer is 0.33%,the initial fluidity of cement paste can get to 227 mm,and no loss in one hour.
作者 陈小路
出处 《新型建筑材料》 2014年第12期80-83,共4页 New Building Materials
关键词 聚羧酸减水剂 改性聚醚大单体 常温 polycarboxylicacid superplasticizer modified polyether macromer normal temperature
  • 相关文献

参考文献3

二级参考文献30

共引文献23

同被引文献64

引证文献8

二级引证文献21

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部