聚丙烯酰胺/酚醛树脂的胶凝反应动力学探讨  

On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin

作　　者：黎钢[1] 郝立根[1] 杨芳[1] 张俊然[1] 王桂香[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《应用化学》2003年第4期391-393,共3页Chinese Journal of Applied Chemistry

基　　金：河北工业大学博士科研启动基金资助项目 ( 2 30 0 2 0 5 0 9)

摘　　要：The kinetics of gellation reaction between amphoteric polyacrylamide(APAM) and water soluble phenol-formaldehyde resin has been studied. The whole gelation process could be divided into three periods:induction period, acceleration period and steady period. The accelerative increase period ranged in 3～17 days determines the incremental amount of gelling velocity and gel viscosity, and its gelling kinetics equation is η=η 0+kt 0.9(25 ℃). There are two factors which are the doses of water soluble phenol formaldehyde resin as crosslinker and the molecular weight of APAM affecting the gelling velocity at temperature 40～70 ℃, the former is the more prominent. The gelling reaction rate constant k could be controlled in 1 57～3 13 Pa·s/d 0.9 for reaction of 0 4% APAM solution with 0 2%～0 8% resol as crosslinker at reaction temperature 50 ℃ and the gel viscosity being reached to the maximum values of 16 2～29 0 Pa·s.The kinetics of gellation reaction between amphoteric polyacrylamide(APAM) and water soluble phenol-formaldehyde resin has been studied. The whole gelation process could be divided into three periods:induction period, acceleration period and steady period. The accelerative increase period ranged in 3～17 days determines the incremental amount of gelling velocity and gel viscosity, and its gelling kinetics equation is η=η 0+kt 0.9(25 ℃). There are two factors which are the doses of water soluble phenol formaldehyde resin as crosslinker and the molecular weight of APAM affecting the gelling velocity at temperature 40～70 ℃, the former is the more prominent. The gelling reaction rate constant k could be controlled in 1 57～3 13 Pa·s/d 0.9 for reaction of 0 4% APAM solution with 0 2%～0 8% resol as crosslinker at reaction temperature 50 ℃ and the gel viscosity being reached to the maximum values of 16 2～29 0 Pa·s.

关 键 词：两性聚丙烯酰胺 水溶性酚醛树脂 聚合物水凝胶 胶凝反应 动力学 

分 类 号：O633[理学—高分子化学] O631.5[理学—化学]