Rocket booster casings made with semipreg having a thermoplastic toughened novolac-based epoxy resin matrix
A semipreg that can be cured/molded to form aerospace composite parts including rocket booster casings. The semipreg includes a fibrous layer and a resin layer located on one side of the fibrous layer. The resin layer includes an epoxy component that is a combination of a hydrocarbon epoxy novolac resin and a trifunctional epoxy resin and optionally a tetrafunctional epoxy resin. The resin matrix includes polyethersulfone as a toughening agent and a thermoplastic particle component.
Publication date: 29/09/2020
Number: US10787997B1 (B1)
Applicant: HEXCEL CORP?[US]
Inventor: BARON KATHLYN LIZETTE?[US]; EMMERSON GORDON?[US] (1)