Rapid and low-cost carbon/carbon composites by using graphite slurry impregnated prepregs |
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| Affiliation: | 1. School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China;2. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China;3. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China;4. Dynamic Machinery Institute of Inner Mongolia, Hohhot 010010, PR China;1. Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 050019, People’s Republic of China;2. Huida Sanitary Ware Co., Ltd., Tangshan 063307, People’s Republic of China;3. School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, People’s Republic of China;1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;2. Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China;1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;2. Key Laboratory of Aero-engine Thermal Environment and Structure, Ministry of Industry and Information Technology, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;3. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;1. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan;2. Hocheng Corporation, Yingge District, New Taipei City, Taiwan;3. National Chung-Shan Institute of Science & Technology, Dual-Use Technology Development Center, Longtan District, Taoyuan City, Taiwan;1. College of Science, Xi’an University of Posts and Telecommunications, Xi’an, Shaanxi 710121, PR China;2. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, PR China;3. Institute of Advanced Structure Technology, Beijing Institute of Technology, Haidian District, 100081 Beijing, PR China;1. CEITEC BUT, Purkynova 123, Brno 612 00, Czech Republic;2. Institute of Physics of Materials, Czech Academy of Sciences, Zizkova 22, Brno 616 00, Czech Republic;3. Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2, Brno 616 69, Czech Republic |
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| Abstract: | A rapid and low-cost carbon/carbon (C/C) composites preparation method is proposed: graphite prepreg-coated carbon fiber fabric (CFF) is formed by hot pressing, followed by hot isostatic pressing and high temperature graphitization, to prepare C/C composite with low porosity and high crystallinity. In this method, the carbon fiber (CF) mass fraction can be precisely regulated in the range of 40–95% by the impregnation process conditions of CFF in graphite prepreg. The graphite particles in the preform were graphitized and bonded with CFF by high temperature graphitization. Finally, a ZrO2 anti-ablative layer was applied using sol-gel method. The results show that when the CF mass fraction is 50%, the C/C composite with a crystallinity of 92.21 and a porosity of 3.47% can be obtained, with mass ablation rate of 0.23 mg/s and density of 1.62 g/m3. The method can prepare C/C composites with uniform density and high ablation resistance. |
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| Keywords: | Carbon/carbon composite Prepreg Hot-press forming Ablative resistance performance |
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