CAJ | 학술논문

通过甲基丙烯酸( MAA)和聚乙二醇( mPEG)进行酯化,合成了一类具有反应活性的羧酸系减水剂中间大单体———聚乙二醇甲基丙烯酸酯。应用正交实验研究了多种合成因素(醇酸摩尔比、催化剂使用量、阻聚剂使用量、实验温度)对酯化反应的影响,获得制备聚乙二醇甲基丙烯酸酯的最优生产条件：醇酸摩尔比为1：3,催化剂对甲苯磺酸(PTS)使用量是原材料总质量1.3%,阻聚剂氢醌用量是MAA质量的0.8%,反应温度是105℃,并对不同分子量的聚乙二醇与甲基丙烯酸的酯化进程进行了分析比较。
통과갑기병희산( MAA)화취을이순( mPEG)진행지화,합성료일류구유반응활성적최산계감수제중간대단체———취을이순갑기병희산지。응용정교실험연구료다충합성인소(순산마이비、최화제사용량、조취제사용량、실험온도)대지화반응적영향,획득제비취을이순갑기병희산지적최우생산조건：순산마이비위1：3,최화제대갑분광산(PTS)사용량시원재료총질량1.3%,조취제경곤용량시MAA질량적0.8%,반응온도시105℃,병대불동분자량적취을이순여갑기병희산적지화진정진행료분석비교。
A kind of monomer with reaction activity polyethylene glycol methacrylate,which could be used as the intermediate macromonomer of polycarboxylate high performance water-reducer. It was prepared by the esterification of methacrylic acid ( MAA ) and polyethylene glycol ( mPEG ) . The experimental conditions ( alcohol and acid molar ratio, the amount of catalyst, the amount of the polymerization inhibitor,experimental temperature) were investigated by using orthogonal design. Optimal production condition to prepare polyethylene glycol methacrylate were got:alcohol and acid molar ratio is 1 : 3. The amount of catalyst p-toluenesulfonic acid ( PTS) is 1. 3% of the total mass of raw materials. Hydroquinone polymerization inhibitor is used in an amount of 0. 8% by mass MAA, the reaction temperature is 105 ℃. And esterification process of different molecular weights polyethylene glycol and methacrylic acid were analyzed and compared.