Fire-retardant composite material

Details Fire-retardant composite material Fire-retardant composite material

B - Operations, Transporting

32

B

B32B 5/28 (2006.01) B32B 5/06 (2006.01) B32B 17/04 (2006.01) B32B 27/28 (2006.01) B32B 33/00 (2006.01) B60R 13/00 (2006.01)

Patent

CA 2548390

A fire-retardant composite structure which includes a balsa core layer, fiberglass reinforcing layers attached to either side of the core layer, a PTFE porous layer attached to one of the fiberglass layers or to a fiberglass veil, and a gel coat layer over the PTFE porous layer. Matrix resin bonds the fiberglass layers to the balsa core member, as well as the PTFE porous layer to the fiberglass layers by impregnation.

La présente invention concerne une structure composite ignifuge comprenant une couche centrale de balsa, des couches de renforcement en fibres de verre reliées de part et d'autre de la couche centrale, une couche poreuse en PTFE reliée à l'une des couches de fibres de verre ou à un voile en fibres de verre, et une couche d'enduit gélifié recouvrant la couche poreuse en PTFE. Une résine d'enrobage relie les couches de fibres de verre à l'élément central en balsa, ainsi que la couche poreuse en PTFE aux couches de fibres de verre par imprégnation.

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