Optimization of novel epoxy/glass fiber nanocomposites utilizing experimental design method

• Main Authors: Jin-Wei Liu, 劉晉瑋
• Other Authors: Huey-Ling Chang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/64168670942589251619

碩士 === 國立勤益科技大學 === 化工與材料工程系 === 99 === In this study, novel nanocomposites are preparation and characterization. The Taguchi experimental design methodology is used to optimize the composition of a nanopowders/glass fiber epoxy resin material comprising nano-alumina, nano-silica, carbon black nanoparticle, epoxy resin, glass fiber and diluent. The effect of nanopowders and diluent addition on the corrosion resistance, thermal properties, and mechanical properties of the various samples are then observed. The results show that the addition of nanopowders will affect the properties of glass fiber/epoxy composites, resulting in thermal stability, corrosion resistance, glass transition temperature, hardness, storage modulus increased. Overall, that nanocomposite comprising 2 wt.% nano-Al2O3, 2 wt.% nano-SiO2, and 2 wt.% carbon black nanoparticle reduced the thermal expansion coefficient (α1) by 17.55% and increased the thermal decomposition temperature by 5.84% compared to that of the sample with no nanopowders. That nanocomposite comprising 2 wt.% nano-Al2O3, 2 wt.% nano-SiO2, 2 wt.% carbon black nanoparticle , and 3.75 wt.% diluent has the best storage modulus ,water and corrosion resistance. The experimental data generated in the Taguchi trials are processed using a regression analysis technique in order to derive analytical formulae relating the composition of the composite samples to their mechanical, thermal and corrosion properties. It is shown that the results obtained using the analytical formulae are in good agreement with the experimental observations. Thus, the derived formulae provide a quick and convenient means of predicting the mechanical and thermal response of glass fiber/ epoxy nanocomposites with a known composition without the need for experimental investigation.