公开(公告)号：US20230331945A1

公开(公告)日：2023-10-19

申请号：US18044146

申请日：2021-09-08

Applicant: Von Roll Schweiz AG

Inventor： Fiorenzo LENZI ,  Nicolas MULLOT ,  Markus RUDIN ,  Dimitri MEIER

IPC: C08J5/24 ,  C08K5/5313 ,  B32B5/02 ,  B32B5/26 ,  B32B37/18 ,  B32B19/02 ,  B32B19/06

CPC classification number: C08J5/244 ,  C08J5/245 ,  C08J5/241 ,  C08K5/5313 ,  B32B5/024 ,  B32B5/263 ,  B32B37/18 ,  B32B19/02 ,  B32B19/06 ,  C08J2363/00 ,  C08J2383/04 ,  B32B2260/023 ,  B32B2260/046 ,  B32B2307/718 ,  B32B2264/1026 ,  B32B2307/3065 ,  B32B2305/076 ,  B32B2305/188 ,  B32B2605/18 ,  B32B2262/101 ,  B32B2262/106 ,  B32B2260/025 ,  B32B2264/201 ,  B32B2305/30

Abstract: The invention relates to a multilayer prepreg comprising a first and a second fiber prepreg, one or two micaceous prepregs and B staged thermosetting resin, which may be different for each layer or identical. The micaceous prepregs are positioned on the top (outside) of the fiber prepregs. There may be plurality of further fiber prepregs. The micaceous prepregs preferably comprise mica flakes in the form of a mica paper. The use of such prepreg as surfacing layer at the top of a composite material or near the top of a composite material can determine an improvement in burn-through and fire retardancy performance of composite materials. It is also disclosed a cured composite panel, such as an aircraft part, obtainable by curing the multilayer prepreg to a C stage.

公开(公告)号：US20230151186A1

公开(公告)日：2023-05-18

申请号：US18058684

申请日：2022-11-23

Applicant: First Graphene Ltd

Inventor： Paul LADISLAUS ,  Neil ARMSTRONG

IPC: C08K7/00 ,  C08K9/04 ,  C08J5/04 ,  C08J7/04 ,  B32B1/08 ,  B32B27/20 ,  B32B27/08 ,  B32B27/36 ,  B32B5/02 ,  B32B13/12

CPC classification number: C08K7/00 ,  C08K9/04 ,  C08J5/043 ,  C08J7/042 ,  B32B1/08 ,  B32B27/20 ,  B32B27/08 ,  B32B27/36 ,  B32B5/028 ,  B32B13/12 ,  C08J2367/00 ,  C08K2201/005 ,  B32B2264/104 ,  B32B2264/107 ,  B32B2307/54 ,  B32B2307/7265 ,  B32B2262/101 ,  B32B2255/28 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2597/00 ,  B32B2264/108 ,  B32B2262/106 ,  B32B2307/302 ,  B32B2307/714 ,  B32B2250/24 ,  B32B2262/0269 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2605/12 ,  B32B2264/302 ,  B32B2264/303 ,  B32B2439/40 ,  B32B2419/06 ,  B32B2264/201

Abstract: A water-resistant composition 20 includes a graphene material 22 forming a matrix with a resin 23. The matrix can include reinforcing fibres such as glass fibres. The composition can include the graphene material 22, a polyester resin 23 and glass fibre reinforcement. Multiple forms of the composite can be provided in layers, such as a barrier layer containing the graphene material 22 in a resin 23 and a second layer containing reinforcing material. A cosmetic coloured gel coat can be applied to the composition and a clear gel coat applied over the cosmetic coating. The graphene material can include graphene platelets 22 dispersed within the resin. The graphene material can provide up to 5% by weight (% wt) of the composite, preferably up to 2% wt of the composite, more preferably between 1% wt and 2.5% wt of the composite and yet more preferably 2% wt of the composite. The composition can be applied to a boat hull, a pipe, a swimming pool, a spa or a tank, or a surface subject to prolonged contact with or submersion in water.