ISSN:
0032-3888
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
This article presents data on outdoor weathering of unfilled epoxy resins. The data have been accumulated after five years of weathering. The anhydride cured epoxy resin system was least affected by outdoor exposure. In addition, systems with higher deflection temperatures were more resistant to attack by outdoor exposure than those of lower deflection temperatures. It was also evident that heat curing is better than curing at room temperature. Hardness, for all systems, decreased with exposure time. Microscopic examination of the exposed systems showed that surface change closely correlated with changes obtained in the mechanical and electrical properties tested in this program. Systems showing the greatest change also had the worst surface appearance.
Additional Material:
22 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pen.760050314
