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http://dx.doi.org/10.7473/EC.2014.49.2.144

A Study on Life Time Prediction of ACM Rubber Composite Using Accelerated Test and Thermogravimetric Analysis  

Ahn, WonSool (Department of Chemical Engineering, Keimyung University)
Lee, Joon-Man (Division Chemical Industry, Yeungnam University College)
Lee, Hyung Seok (R&D Center, Datwyler Korea, Inc.)
Publication Information
Elastomers and Composites / v.49, no.2, 2014 , pp. 144-148 More about this Journal
Abstract
Compression set (CS) and weight loss by thermal degradation of the ACM rubber composite sample prepared for an automotive part were measured simultaneously at several given temperatures of $150^{\circ}C$, $160^{\circ}C$, $170^{\circ}C$, and $180^{\circ}C$. Using the relationship between them, thermal life of the sample could be predicted at a given operating temperature by applying Toops method which is based on the analysis of non-isothermal TGA thermograms. Conversion by weight loss showed a linear relationship with CS changes, exhibiting 4.2% at CS 40%. Activation energy of thermal degradation was calculated as 120.2 kJ/mol at 4.2% of weight loss from Flynn-Wall-Ozawa analysis. When the expected life was set as time to reach CS 40% at $120^{\circ}C$, the life time of the sample was calculated as 9,700 hrs when Toops method was applied.
Keywords
ACM rubber; toop method; TGA; life time prediction;
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Times Cited By KSCI : 4  (Citation Analysis)
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