Lightweight sandwich panel intended for the production of multilayer structure withstanding impacts and heat attacks

摘要

A sandwich panel intended for the production of partitions, for example for building, of the type comprising a core 2 placed between two sole plates, outer 1 and inner 3. The outer sole plate 1 consists of a set of at least three layers integrally joined together by welding or adhesive bonding: a first layer 4 made of a composite material, a second layer 5 made of a cellular synthetic material with a low thermal conductivity coefficient, a third layer 6 obtained by lamination of a composite material. The second layer 5 consists of a honeycomb and the composite material of the first 4 and third 6 layers consists of resins reinforced with glass fibres. The resin incorporated into the first layer 4 is chosen from the group consisting of epoxy, polyester, phenolic or vinyl ester resins and the resin incorporated into the third layer 6 is an epoxy resin. The second layer 5 consists of polypropylene, a film 7 made of nonwoven polyester being arranged between the first 4 and second 5 layers and a layer 8 consisting of an aluminium foil is placed between the second 5 and third 6 layers. Application to the production of a wall for building construction. IMAGE