| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.192 |
| 발표분야 | 복합재료 |
| 제목 | Nondestructive Evaluation of Nicalon Nanowire Strands Composites Using Electro-Micromechanical Technique |
| 초록 | Electrical and mechanical properties of Ni nanowire reinforced epoxy composites depend on various parameters such as inherent properties of Ni Nanowire, the degree of dispersion, aspect ratio, shape and content, etc. Among them, the degree of dispersion is one of the very important factors affecting on electrical and mechanical properties. Nondestructive damage sensitivity and electrical properties of various concentration of Ni/epoxy composites were investigated using electro-micromechanical technique. Ni nanowire/epoxy composites were oriented well under magnetic field and their apparent modulus was higher than the random state case (Fig. 1). However, aligned case under magnetic field, volumetric electrical resistance were smaller than the random case, which means electrically conductive better. Electrical contact resistance was measured with increasing concentration from 0.3 vol%, 0.5 vol% and 2 vol% ranges respectively. For 0.3 vol% concentration case, electrical contact resistance was roughly responded with applied stress-strain, whereas 2 vol% concentration responded well exactly (Fig. 2). Acknowledgement: this work was financially supported from 'Center for Nanostructured Materials Technology' under '21st Century Frontier R&D program' of MST. Fig. 1(a) Random nanowire in epoxy Fig. 1(b) Aligned Ni nanowire in epoxy under magnetic filed Fig. 2(a) Contact resistance of Ni nanowire/epoxy Fig. 2(b) Contact resistance of Ni nanowire/epoxy composite (0.3 vol%) composite (2 vol%) References 1. W. Merchan-Merchan, A. V. Saveliev and L. A. Kennedy, Carbon, 42, 559-608, (2004). 2. D. S. Kim, J. M. Park, T. W. Kim, Polymer(Korea), 28, 1 (2004). |
| 저자 | 김성주1, 정진규2, 박종만1, 김태욱2 |
| 소속 | 1경상대, 2공학(연) |
| 키워드 | Nanocomposites; Uniform cyclic strain test; Electrical contect resistivity; Apparent modulus; Nondestructive Evaluation |
