Abstract

The rate of air ventilation in an oven is an important condition required in an accerlerated ageing oven test. A Power Consumption method has been designated as the checking method in many standards, but it is impractical in actual use. A new oven has been developed using the Air Flow-meter method which has the same performance as the Power Consumption method and can be easily set to monitor the air ventilation rate. The new oven is also provided with air filters for cleaning incoming air and the air circulating in the test chamber which minimizes the problems arising due to contaminated air, but has not been considered in conventional standards. This paper describes the newly developed oven and the experiments conducted with the oven using several standard rubbers, where the deterioration was assessed by retention of elongation at break (EB).

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