Effect of low melting temperature polyamide fiber-interlaced carbon fiber braid fabric on the mechanical performance and fracture toughness of CFRP laminates
Jong Hyun Eun, Dong Hyun Kim, Joon Seok Lee
Abstract
Fracture toughness and epoxy matrix brittleness have been main issues in carbon/epoxy composites. Various studies have been reported to improve the fracture toughness and brittleness of the carbon/epoxy composites. Although conventional method such as toughened epoxy matrix dissolving method, interleaving with a thermoplastic interlayer method, incorporating with a thermoplastic particles method improve the fracture toughness and brittleness of the carbon/epoxy composites, there have been no significant improvement. Therefore, in this study, due to improve the fracture toughness and brittleness of the carbon/epoxy composites, applied the carbon fiber/low melting temperature polyamide fiber co-braid fabric. In addition, the toughened effect of carbon fiber co-braid fabric with low melting temperature polyamide fiber and high melting temperature polyamide fiber were investigated. The carbon/epoxy composites manufactured by carbon fiber/low melting temperature polyamide fiber co-braid fabric, the fracture toughness significantly improved about 293% compared to the pristine specimens.