MOLECULAR MOBILITY AND RELAXATION PROCESSES IN AN EPOXY MATRIX 2. EFFECTS OF WEATHERING IN HUMID SUBTROPICAL CLIMATE.

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作者
Startsev, O.V. [1 ]
Mashinskaya, G.P. [1 ]
Yartsev, V.A. [1 ]
机构
[1] Moscow Automotive Inst, Moscow, USSR, Moscow Automotive Inst, Moscow, USSR
关键词
PLASTICS; REINFORCED - Fibers - TEMPERATURE MEASUREMENT;
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摘要
Results are presented of a study of the molecular mobility and relaxation processes in an epoxy matrix of PCM after extended exposure to the humid subtropical Batumi climate. The combination of such factors as the high average annual relative humidity (80-85%), the large amount of precipitation (2500-2800 mm per year), the fairly high level of sun radiation, and the proximity to the Black Sea, which increases the level of sulfates and chlorides in the atmosphere, results in a highly agressive environment in Batumi. An additional factor is the natural thermocycling taking place due to radiative heating of the sample surface. For example, on sunny summer days the temperature of organic fiber-reinforced plastic samples usually reaches 320-330 degree K.
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页码:406 / 409
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