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Compressional behavior of carbon nanotube reinforced mesophase pitch-based carbon fibers |
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| Authors: | Young Rack Ahn Young Seak Lee A. A. Ogale Chang Hun Yun Chong Rae Park |
| Affiliation: | 1. Enviro-polymers Design Lab., Hyperstructured Organic Materials Research Center (HOMRC) and School of Materials Science and Engineering, Seoul National University, 151-744, Seoul, Korea 2. Department of Fine Chemical Engineering & Chemistry, Chungnam National University, 305-764, Daejeon, Korea 3. Department of Chemical Engineering and Center for Advanced Engineering Fibers and Films, Clemson University, 29634, Clemson, SC, USA 4. School of Applied Chemistry and Chemical Engineering, Sungkyunkwan University, 440-746, Suwon, Korea |
| Abstract: | The tensile-recoil compressional behavior of the carbon nanotube reinforced mesophase pitch (MP)-based composite carbon fibers (CNT-re-MP CFs) was investigated by using Instron and SEM. The CNT-re-MP CFs exhibited improved, or at least equivalent, compressive strength as compared with commercial MP-based carbon fibers. Particularly, when CNT of 0.1 wt% was reinforced, the ratios of recoil compressive strengths to tensile strength of CNT-re-MPCFs were much higher (the difference is at least 10% or higher) than those for the commercial counterparts and even than those for PAN-based commercial carbon fibers. FESEM micrographs showed somewhat different fractography from that of a typical shear failure as the CNT content increased. |
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