Interface chemistry in carbon fibre/epoxy matrix composites |
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| Affiliation: | 1. British Aerospace (Operations) Ltd, Sowerby Research Centre, FPC 267, PO Box 5, Filton, Bristol BS12 7QW, UK;2. British Aerospace Airbus Ltd, Filton House, Filton, Bristol BS99 7AR, UK;1. Department of Biomaterials Science and Turku Clinical Biomaterials Centre—TCBC, Institute of Dentistry, University of Turku, 20520 Turku, Finland;2. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China;3. Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China;4. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China;5. City of Turku Welfare Division, Oral Health Care, 20520 Turku, Finland;1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;2. Collaborative Innovation Center for Advanced Aero-engine, Beijing 100191, China;3. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;4. AVIC Commercial Aircraft Engine Co., Ltd., Shanghai 201108, China;1. School of Engineering and Technology, China University of Geosciences, Beijing, 100083, China;2. AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China;3. Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China;4. Flexible Integrated Circuit Center, Institute of Flexible Electronic Technology of THU, Jiaxing, 314006, China;5. Sate Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang, 621000, China;6. China Academy of Aerospace Aerodynamics, Beijing, 100074, China;7. Zhengzhou Research Institute, China University of Geosciences (Beijing), Zhengzhou, 450001, China;1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, PR China;2. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, PR China;3. Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, PR China;4. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, PR China;5. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, PR China |
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| Abstract: | Microcomposite test methods were used to measure the properties of the interphase of HTA/922 carbon/epoxy composites. The shear strength of the interphase resin is lower than that of the bulk resin. It is suggested that the discrepancy arises from changes in resin chemistry at the fibre/matrix interface. Bulk resin samples where the proportions of the constituents had been altered were tested. Resin with a reduced level of hardener matched the mechanical behaviour of the interphase resin. It is concluded that, for the system examined, the interphase resin had a lower hardener concentration than the bulk resin. |
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