Optimizing electrophoretic deposition conditions for enhancement in electrical conductivity of carbon fiber/carbon nanotube/epoxy hybrid composites
来源期刊：中南大学学报(英文版)2012年第11期
论文作者：WANG Yi-qi(王一奇) BYUN Joon-hyung KIM Byung-sun SONG Jung-il
文章页码：3017 - 3022
Key words：design of experiment; electrophoretic deposition; carbon nanotube; Taguchi method; signal to noise (S/N) ratio; analysis of variance (ANOVA)
Abstract: The effectiveness of optimizing electrical conductivity of carbon fiber/carbon nanotube (CNT)/epoxy hybrid composites via Taguchi method was demonstrated. CNTs were induced on carbon fabric by electrophoretic deposition (EPD) technique. The essential deposition parameters were identified as 1) the deposition time, 2) the deposition voltage, 3) the mass fraction of CNTs in suspension, and 4) the distance between the electrodes. An experimental design was then performed to establish the appropriate levels for each factor. An orthogonal array of L9 (34) was designed to conduct the experiments. Electrical conductivity results were collected as the response. The relative influences of design parameters on the response were discussed. Using the model, signal to noise (S/N) ratio and response characteristics for the optimized deposition parameter combination were predicted. The results show clearly that the optimum condition of electrophoretic deposition (EPD) process improves the electrical conductivity of carbon/epoxy hybrid composites.
WANG Yi-qi(王一奇)1, BYUN Joon-hyung2, KIM Byung-sun2, SONG Jung-il1
(1. Department of Mechanical Engineering, Changwon National University, Changwon 641-773, Korea;
2. Korea Institute of Materials Science, Changwon 641-831, Korea)
Abstract:The effectiveness of optimizing electrical conductivity of carbon fiber/carbon nanotube (CNT)/epoxy hybrid composites via Taguchi method was demonstrated. CNTs were induced on carbon fabric by electrophoretic deposition (EPD) technique. The essential deposition parameters were identified as 1) the deposition time, 2) the deposition voltage, 3) the mass fraction of CNTs in suspension, and 4) the distance between the electrodes. An experimental design was then performed to establish the appropriate levels for each factor. An orthogonal array of L9 (34) was designed to conduct the experiments. Electrical conductivity results were collected as the response. The relative influences of design parameters on the response were discussed. Using the model, signal to noise (S/N) ratio and response characteristics for the optimized deposition parameter combination were predicted. The results show clearly that the optimum condition of electrophoretic deposition (EPD) process improves the electrical conductivity of carbon/epoxy hybrid composites.
Key words:design of experiment; electrophoretic deposition; carbon nanotube; Taguchi method; signal to noise (S/N) ratio; analysis of variance (ANOVA)
