| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.208 |
| 발표분야 | 복합재료 |
| 제목 | Interfacial Properties and Sensing of Carbon Nanofiber/Tube and Electrospun Nanofiber/Epoxy Composites Using Electrical Resistance Measurement and Micromechanical Technique |
| 초록 | Nondestructive damage sensitivity and electrical properties of carbon nanofiber (CNF)/epoxy composites for four different aspect ratios were investigated using electro-micromechanical technique in Fig. 1. Electrical and mechanical properties of carbon nanomaterials (CNMs) reinforced epoxy composites depend on aspect ratio. For high aspect ratio, the electrical resistivity decreased in comparison with low aspect ratio due to the more opportunity for electrical contact. In contrast, apparent modulus increases with a decrease in the aspect ratio. It may be because interphase area between matrix material and carbon nanofibers increases and stress transferring effect should be comparable. Micro-damage sensitivity of various CNF/epoxy composites could be comparable for differing aspect ratios. Carbon nanotube (CNT) was used for the comparison. Aspect ratio is an important factor affecting on the electrical properties and mechanical properties significantly. Elecrtospun nanofibers of PVA/CNT solution at low and high concentrations are shown in Fig. 2. In high concentration case showed smooth electrospun nanofiber than low aqueous solution concentration. These results on aspect ratio parameters and electrospun nanofiber could be investigated by electro-sensing test further consequently. Acknowledgement: this work was financially supported by Korea Research Foundation Grant (KRF-2004-002-D00192). Fig. 1 Different types of aspect ratios for CNF Fig. 2 Elecrtospun PVA/CNT nanofiber at low and high concentrations References 1. Y. H. Liao, M. T. Olivier, Z. Liang, C. Zhang, B. Wang, Materials Science and Engineering A, 385, 175-181, (2004). 2. J. M. Park, D. S. Kim, J. R. Lee, T. W. Kim, Materials Science & Engineering C, 23, 971 (2003). |
| 저자 | 정진규1, 박종만2, 김성주1 |
| 소속 | 1경상대, 2공학(연) |
| 키워드 | Nanocomposites; Interfacial Properties; Micromechanical Technique; Electrical Resistance; Electrospinning |
