Outdoor and Accelerated Weathering of Elastomers and Plastics: The Assessment of an Accelerated Weathering Test Chamber
EXPLOSIVES RESEARCH AND DEVELOPMENT ESTABLISHMENT WALTHAM ABBEY (UNITED KINGDOM)
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A range of elastomers and plastics were exposed in a Climatest accelerated weathering test chamber which uses a fluorescent source of ultraviolet radiation. The rates of deterioration of the materials exposed in the Climatest were compared with those of the same materials exposed out of doors at various sites including hotwet and hotdry tropical sites at Australia and temperate UK sites. The rates of deterioration obtained with the Climatest were usually about ten times faster than outdoor tropical exposures, rather slower than had been anticipated. Correlation between the rates of change of mechanical properties of materials exposed in the Climatest and out of doors was reasonably satisfactory, although visual failures apparent on specimens exposed out of doors were not necessarily reproduced by accelerated weathering cycles. A brief description of the Climatest and its operation is also given.
- Laminates and Composite Materials
- Elastomers and Rubber
- Test Facilities, Equipment and Methods