摘要
以过硫酸铵为引发剂,以酒石酸改性的马来酸酐(TMA)、烯丙基聚乙二醇(APEG)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)为共聚单体,合成聚羧酸高性能减水剂PTAA。以净浆流动度为考查指标,研究了单体配比、引发剂用量、反应温度、反应时间对聚合的影响。结果表明,在MA为0.01 mol、n(APEG)∶n(AMPS)=2.28、引发剂过硫酸铵(APS)的用量为单体总量的3%、反应温度75℃、反应时间3 h时,所合成的减水剂在用量为1.0%时,其净浆流动度可达288 mm。
TMA - APEG - AMPS polycarboxylic high performance water reducer PTAA was synthesized using tartaric modified maleic acid (TMA) , acrylic polyoxyethylene glycols (APEG) and 2 -acrylamido -2 -methyl -propane sulfonic acid (AMPS) as raw materials. The effects of comonomers tool ratio, initiator dosage, reaction temperature and reaction time on the cement fluidity were discussed. The results showed that the optimum synthesis conditions were molar ratio of MA 0.01 tool, n(APEG) : n(AMPS) of 2.28, APS dosage 3.0wt%, reaction temperature of 75 ℃ and reaction time of 3 h. When adding 1.0% water reducer in cement_ the fluidity of cement paste was 288 mm.
出处
《广州化工》
CAS
2013年第1期62-64,共3页
GuangZhou Chemical Industry
基金
江西省教育厅项目(GJJ11680)
关键词
酒石酸
马来酸酐
烯丙基聚乙二醇
减水剂
tartaric acid
maleic acid
acrylic polyoxyethylene glycols
water reducer