Characterizing water sorption in 100% solids epoxy coatings

被引：37
作者：
Coniglio, N. [1 ]
Nguyen, K. [1 ]
Kurji, R. [1 ]
Gamboa, E. [1 ]
机构：
[1] Univ Adelaide, Sch Mech Engn, Adelaide, SA, Australia
来源：
PROGRESS IN ORGANIC COATINGS | 2013年 / 76卷 / 09期
关键词：
100% solids epoxy; Gravimetric liquid sorption measurements; Water diffusion coefficient; Non-Fickian two-stage diffusion; AEROSPACE COMPOSITE-MATERIALS; MOISTURE ABSORPTION BEHAVIOR; GLASS-TRANSITION; DIFFUSION; RESIN; DESORPTION; SYSTEMS; CURE; TRANSPORT; NETWORKS;
D O I：
10.1016/j.porgcoat.2013.03.011
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In the present work, water sorption kinetics and equilibrium in 100% solids epoxy coatings are investigated by immersion into distilled water baths from 20 to 85 degrees C (absorption tests) and drying in a furnace between 60 and 85 degrees C (desorption tests). The gravimetric liquid sorption measurements reveal a non-Fickian two-stage diffusion behaviour during both absorption and desorption. The effect of hydrothermal history was also investigated. Cycling the immersion bath temperature increases the saturation values. Alternating sorption-desorption cycles increases the speed of water movement. The hydrothermal-induced coating degradation and the sorption modes are discussed. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：1168 / 1177
页数：10
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