CAJ | 학술논문

采用甲基烯丙基聚氧乙烯醚(TPEG)与不饱和羧酸在氧化还原体系下合成聚羧酸减水剂。研究了反应温度、反应时间、单体与不饱和羧酸摩尔比(酸醚比)、引发剂用量及分子量调节剂用量对聚羧酸减水剂性能的影响。在n(AA)∶n(Itaconic acid)∶n(Thioglycolic acid)∶n(TPEG)=1.7∶0.23∶0.005∶1,m(initiator)∶m(TPEG)=0.20%、反应时间4 h、反应温度45℃时,聚羧酸减水剂各项性能最佳。
채용갑기희병기취양을희미(TPEG)여불포화최산재양화환원체계하합성취최산감수제。연구료반응온도、반응시간、단체여불포화최산마이비(산미비)、인발제용량급분자량조절제용량대취최산감수제성능적영향。재n(AA)∶n(Itaconic acid)∶n(Thioglycolic acid)∶n(TPEG)=1.7∶0.23∶0.005∶1,m(initiator)∶m(TPEG)=0.20%、반응시간4 h、반응온도45℃시,취최산감수제각항성능최가。
Adopting methyl allyl polyoxyethylene ether (TPEG)and unsaturated carboxylic acid throught REDOX system synthetize the polycarboxylic slump-retaining admixture.The impact factors were researched of temperature,re-action time,acid alcohol ratio,dosage of initiator and molecular regulator to the polycarboxylic superplasticizer with slump retaining.In the circumstance of n(AA)∶n(Itaconic acid)∶n(Thioglycolic acid)∶n(TPEG)=1.7∶0.23∶0.005∶1,m(initiator)∶m(TPEG)=0.20%,reaction time is 4 h and temperaure is 45 ℃,the admixture has the best performance.