| Autor: |
Nishi Y; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan.; Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan.; Laboratoire de Génie Electrique et Ferroéléctricité (LGEF), INSA Lyon, CEDEX, 69621 Villeurbanne, France.; Ecole Centrale de Lyon, CEDEX, 69134 Ecully, France.; Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina 243-0435, Japan., Tsuyuki N; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan., Uchida HT; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan.; Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan., Faudree MC; Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan.; Faculty of Liberal Arts and Science, Tokyo City University, Yokohama 224-8551, Japan., Sagawa K; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan., Kanda M; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan.; Laboratoire de Génie Electrique et Ferroéléctricité (LGEF), INSA Lyon, CEDEX, 69621 Villeurbanne, France.; Center of Applied Superconductivity & Sustainable Energy Research, Chubu University, Kasugai 487-8501, Japan., Matsumura Y; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan.; Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan., Salvia M; Ecole Centrale de Lyon, CEDEX, 69134 Ecully, France., Kimura H; Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan.; Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan. |
| Abstrakt: |
In an interlayered carbon fiber-reinforced polycarbonate polymer (CFRPC) composite composed of three sized of CF plies, alternating between four PC sheets, designated [PC] 4 [CF] 3 , and a new process of activating CF cross-weave cloth plies directly on both sides with homogeneous low-energy electron beam irradiation (HLEBI) before lamination assembly and hot pressing at 6.0 MPa and 537 K for 8 min was produced. Experimental results show that a dose of 215 kGy of HLEBI raised the bending strength, σ b , at each experimental accumulative probability, P a , with the σ b at a median P a of 0.50, increasing by 25% over that of the untreated sample. Three-parameter Weibull analysis showed that when quality can be controlled, a dose of 215 kGy of HLEBI can raise the statistically lowest bending strength, σ s , at P a = 0 (94.3 Mpa), with a high correlation coefficient. This is because, although it had a higher bending strength than that in the other experimental conditions, the weakest sample of the 215 kGy data set had a much lower σ b value than that of the others. Electron spin resonance (ESR) of the CF showed that naturally occurring dangling bonds in CF were increased at 215 kGy. Charge transfer to the PC occurs, apparently generating stronger bonds, which are possibly covalent, resulting in enhanced adhesion at the CF-PC interface. |
