Mechanical Properties of CF/GF Fiber Hybrid Multi-axial Warp Knitted Fabric epoxy Composite Materials

摘要

In order to extend the applicability of composite, concept of "fiber hybrid composite" was applied into the multi-axial warp knitted fabric composites. Two kinds of fiber, carbon and glass fiber bundles, were used in 0/90 multi-axial warp knitted fabric. As the fiber hybrid composite, Inter-layer hybrid composite (C/G) in which 0 layer and 90 layer were fabricated by Carbon and Glass fiber bundles respectively was investigated. Matrix is epoxy resin. For the comparison, the specimen with unsaturated polyester used as matrix resin was prepared. In case of unsaturated polyester used as matrix tesin, as result of tensile test, tensile modulus and strength of inter layer fiber hybrid composite were the highest value in all specimens. Therefore, it can be said that positive effect of fiber hybrid composite was realized in inter layer hybrid composite. On the other hand, in case of epoxy, as a result of tensile test, tensile modulus and strength of inter layer fiber hybrid composite were not highest value in all specimens. In this case, fiber hybrid has no effect in inter layer hybrid composite because of the thermal stress.