EPOXY RESINS AND COMPOSITE MATERIALS EXHIBITING IMPROVED COMBUSTION PROPERTIES Russian patent published in 2013 - IPC C08L63/00 C08L79/00 C08J5/24 C08J3/24 

FIELD: chemistry.

SUBSTANCE: invention relates to epoxy resin-based composite materials. The epoxy resin-based composition contains: a) 50-70 wt % of a component which is an epoxy resin containing one or more epoxy resins; b) 15-35 wt % of a mixture of thermoplastic materials containing polyetherimide and polyamideimide, where the weight ratio of polyetherimide to polyamideimide ranges from 5:1 to 1:5; and c) 5-25 wt % of a component which is a curing agent, where the epoxy resin composition has sulphur dioxide release level below 100 ppm. Also disclosed is a method of preparing a composition, a component made from an uncured composite, a component made from the composite, where a matrix of the epoxy resin is cured, and a method of producing a prepreg.

EFFECT: composite materials can be used to make primary structures in aircraft and other load-bearing structures, characterised by good self-extinguishing time.

21 cl, 2 dwg,18 ex