引用本文:
黎钢, 郝立根, 杨芳, 张俊然, 王桂香. 聚丙烯酰胺/酚醛树脂的胶凝反应动力学探讨[J]. 应用化学,
2003, 20(4): 391-393.
Citation: LI Gang, HAO Li-Gen, YANG Fang, ZHANG Jun-Ran, WANG Gui-Xiang. On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin[J]. Chinese Journal of Applied Chemistry, 2003, 20(4): 391-393.
Citation: LI Gang, HAO Li-Gen, YANG Fang, ZHANG Jun-Ran, WANG Gui-Xiang. On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin[J]. Chinese Journal of Applied Chemistry, 2003, 20(4): 391-393.
聚丙烯酰胺/酚醛树脂的胶凝反应动力学探讨
English
On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin
Abstract:
The kinetics of gellation reaction between amphoteric polyacrylamide (APAM) and water soluble phenolformaldehyde 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=η0+kt0.9 (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/d0.9 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.
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Key words:
- polyacrylamide
- / phenol formaldehyde resin
- / polymer gels
- / gelling reaction
- / kinetics
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