Interfacial ageing of high temperature carbon/bismaleimide composites |
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| Affiliation: | 2. Rovira i Virgili University, Tarragona, Spain;1. Key Laboratory of Eco-textiles, Ministry of Education, College of Textile Science and Engineering, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China;2. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, China;3. State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China |
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| Abstract: | Ageing studies were performed on a carbon fibre–bismaleimide (CBR320/328) system developed by the CSIRO in Australia, with a fibre volume fraction of 55%. This material has a glass transition temperature of 302 °C and the effect of ageing at 204 and 250 °C on the interfacial region was studied. A variety of test techniques were employed to characterise interfacial property changes (mode I delamination, SEM, Raman); chemical changes due to ageing (Raman, FTIR); changes in glass transition temperature (DMTA) and weight loss. The results showed that both interfacial and resin degradation mechanisms differed between the two temperatures. It can, therefore, be concluded that accelerated ageing is not applicable to this system. |
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