公开(公告)号：US20220267543A1

公开(公告)日：2022-08-25

申请号：US17625157

申请日：2020-07-19

Applicant: HEXCEL COMPOSITES LIMITED

Inventor： Mark WHITER ,  Ben TIPLER ,  Mathilde MAILLOT

IPC: C08J5/24 ,  C08K3/40

Abstract: A prepreg or semipreg precursor comprising a fibre reinforcement and a resin composition fused thereto, the resin composition containing at least one epoxy resin and a latent curing agent, wherein the epoxy resin and the latent curing agent form a solid phase at ambient temperature, the latent curing agent forming a discrete phase within the epoxy resin. The stabilized uncured resin composition and prepregs and semipregs incorporating the same are easy to handle, have desirable curing temperatures and show good outlife at ambient to mid range temperatures.

公开(公告)号：US20250135748A1

公开(公告)日：2025-05-01

申请号：US18686634

申请日：2022-09-05

Applicant: HEXCEL COMPOSITES LIMITED

Inventor： Ben TIPLER ,  Mark WHITER

IPC: B32B7/025 ,  B32B5/02 ,  B32B15/02 ,  B32B15/14 ,  B32B15/20 ,  B32B27/08 ,  B32B27/12 ,  B32B27/38 ,  B32B27/40

Abstract: There is provided a surfacing material comprising an ultraviolet (UV) resistant polymer layer, a thermocurable or thermoplastic resin layer and a fibrous support, wherein a first surface of the UV resistant polymer layer forms an outermost surface of the surfacing material and the second surface of the UV resistant polymer layer contacts a first surface of the thermocurable or thermoplastic resin layer, and the second surface of the thermocurable or thermoplastic resin layer contacts a first surface of the fibrous support. There is also provided methods of forming cured composite structures having an ultraviolet resistant outer surface utilising a surfacing material of the invention, and cured composite structures incorporating a UV resistant surfacing layer of the invention.