反应条件对PA高效减水剂性能影响的研究  

Effect of Reaction Conditions on the Properties of PA High Range Water Reducing Agent

作　　者：陈永芬[1] 陈克强[1] 黄寿栗[1] 孙杨宣[1] 

机构地区：[1]四川大学高分子研究所成都610065

出　　处：《四川大学学报（工程科学版）》2000年第4期65-67,共3页Journal of Sichuan University (Engineering Science Edition)

基　　金：四川省科委重点科技攻关资助项目 !( 99B0 75)

摘　　要：研究了酚系高效减水剂 (以下简称PA)的配方、合成工艺及其性能 ,讨论了影响PA高效减水剂性能的主要反应条件。当磺化剂用量及酚、醛比例确定后 ,合成反应进行的时间及分子量调节剂用量是影响PA高效减水剂性能的重要因素 ,通常将合成反应时间控制在 5～ 7h ,分子量调节剂的用控制在 1 %～ 2In this paper, a synthetic method of PA high range water reducing agent was studied.The mian facts affecting the properties of PA high range water reducing agent were also discussed.When the added amount of sulfonation agent and the ratio of phenol to aldehyde were determined,the main facts that influence the properties of PA high range water reduing agent were the reaction times and the added amoumt of moecular modifier. ordinary, the synthetic time is betwween 5～7 h,the satisfactory added amount of molecular modifier is between 1%～2%.

关 键 词：高效减水剂 磺化剂 净浆流动度 混凝土 

分 类 号：TU528.042[建筑科学—建筑技术科学]