Innovative epoxy prepreg using a bio-based resin
The formulation features CTS’s new novolac-based bio-hardener, Novocard™ XFN, which introduces a high level of renewable content to prepregs and increases impact strength by 163 percent, when compared to composite prepregs made with a conventional amine-cured resin and carbon fiber. The aerospace, wind energy, transportation and sporting industries can use the bio-based prepreg in a range of applications due to its versatility and strength. Novocard resin is produced with oil extracted from discarded cashew nutshells. Thermally, chemically, and water-resistant, the bio-resin delivers superior fiber wetting and improved surface appearance. In addition to higher impact strength, Novocard-cured prepregs show improved material flow properties and processability in hot melt prepreg processes due to longer gel time when compared to traditional amine-cured epoxy systems. Mechanical tests of a composite laminate made with a Novocard prepreg demonstrated higher shear strength