THERMOPLASTIC-MODIFIED CYANATE ESTER-BASED POLYMER COMPOSITION, PREPREG BASED THEREON AND ARTICLE MADE THEREFROM Russian patent published in 2014 - IPC C08G18/28 C08G75/20 C08G73/00 C08L79/00 C09D181/00 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to cyanate ester-based polymer compositions which are modified with polysulphones, reinforced with fibrous filler and are used for producing structural polymer composite materials with operating temperature of up to 200°C and articles from said materials, which can be used in aviation, aerospace, motorcar, ship-building and other industries. Disclosed is a cyanate ester-based polymer composition for polymer composite materials, which comprises a thermoplastic modifier and a curing agent, wherein the modifier used is a thermoplastic selected from polysulphone, polyestersulphone, polyarylsulphone or mixtures thereof, and the curing agent used is an amine catalyst. The invention also discloses a prepreg which includes said polymer composition and fibrous filler, and an article made from said prepreg by moulding.

EFFECT: producing a thermoplastic-modified cyanate ester-based polymer composition which is characterised by homogeneity of the composition, which enables prepreg processing thereof and enables to obtain moisture-proof articles from polymer composite materials made therefrom, with improved thermomechanical properties, a coefficient of variation of physical and mechanical properties and good retention of strength properties at high temperatures.

7 cl, 12 dwg, 3 tbl