'TORAYCA' T700 Fabric/3680 Self-Adhesive Type Honeycomb Co-Cure Prepreg

摘要

Newly developed self-adhesive type honeycomb co-curable fiber prepreg system, "TORAYCA T700GC/3680", reduces fabrication cost and weight of honeycomb sandwich structures. Excellent adhesive property of the 3680 toughened epoxy resin allows the elimination of cost-added adhesive films in prepregs/honeycomb co-curing sandwich structures, which also leads to weight reduction of aircraft composite parts. Good fiber-spreading capability of T700GC-12K fabric combines very well with the flow-controlled 3680 resin. This combination minimizes internal porosity and surface pitting of honeycomb sandwich skins. Good tackiness and excellent formability of prepreg expedite the fabrication of complex contoured parts. Additionally, the higher tensile strain of T700GC fabric compared to the conventional T300-3K fabric gives the higher impact-penetration resistance of honeycomb sandwich skins.