オゾン濃度,温度が同時に変動する環境下での建築用ゴム系材料のオゾン劣化の評価

田中 享二; 宋 炳昌; 小池 迪夫

doi:10.3130/aijsx.443.0_17

Journal of Structural and Construction Engineering (Transactions of AIJ)

Online ISSN : 2433-0000
Print ISSN : 0910-8025
ISSN-L : 0910-8025

OZONE DEGRADATION OF RUBBER SHEETS FOR ROOF COVERING UNDER FLUCTUATING OZONE CONCENTRATION AND TEMPERATURE

Kyoji TANAKA, Byung Chang SONG, Michio KOIKE

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Keywords: ozone degradation, prediction of degradation, rubber sheets, ozone concentration, temperature, ozone test

JOURNAL FREE ACCESS

1993 Volume 443 Pages 17-23

DOI https://doi.org/10.3130/aijsx.443.0_17

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Abstract

The method to predict time to failure of roof covering rubber sheets under fluctuating ozone concentration and temperature was developed, being based on the equation, t=10^<(c/t+D)>/X^A, which express the time to failure of them, at constant ozone concentration, X and temperature, T. Ozone tests which ozone concentration and temperature were varied through sine curves were carried out. Comparing both results obtained by the tests and calculation, it is concluded that the effect of fluctuating ozone concentration and temperature can be estimated by the integration of them with time.

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