| Summary: | 碩士 === 逢甲大學 === 纖維與複合材料學系 === 104 === In this study, the use of nano-silica on bisphenol A epoxy resin to toughen and prepare different nano silica content of the modified resin system. Then hand laminated prepared a quantitative basis weight and fiber content of the prepreg resin material. By using differential scanning thermal analyzer (DSC) and rheometer find hardening resin systems and processing conditions of temperature and then to a hot press method to make glass fiber cloth laminate. And its effect of different proportions of nano-silica glass transition temperature of the substrate of the position (Tg) and viscosity, followed by use of materials testing machine to test the toughness of DCB destroy Discussion (Double Cantilever Beam test) and impact properties, and finally and SEM image of fracture surface were analyzed after the DCB test.
The results show: glass transition temperature of the resin material in position 118 ± 2 °c, not by the addition of various amounts of nano silica caused significant impact; fig SEM observation of fracture surface from DCB test after the damage occurred during discovery crack path deflection, crack pinning, micro-cracks and peeling failure mechanism proved to add nano-silica composites can absorb leaving more destructive energy, when the silica content is 6wt% when, GIC will be from 0.56 kJ / m2 upgraded to 1.05kJ / m2. Increased by 46.67%; impact damage from 40.14 kJ / m2 increased to 51.27 kJ / m2, increased by 27.73%.
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