PHTHALONITRILE BINDER COMPOSITION FOR POLYMER COMPOSITE MATERIALS, A METHOD FOR PRODUCTION THEREOF, A METHOD OF PRODUCING A POLYMER COMPOSITE MATERIAL AND A MATERIAL OBTAINED USING SAID METHOD Russian patent published in 2019 - IPC C08G73/06 C08L79/08 C08K5/523 C08J5/06 C08J5/24 

FIELD: technological processes.

SUBSTANCE: invention relates to a binder composition for making a polymer composite material (PCM) or prepregs for PCM, to versions of binder composition production method, method of curing a binder composition, a polymer composite material and a method for production thereof. Binder composition contains: (1) a polymerisable mixture containing one or more bis-phthalonitrile monomers of general formula:

where X, Y, Z are each independently selected from a group consisting of H, F, Cl, Br and CH₃, in amount of 20–94 wt% of weight of polymerised mixture; one or more reactive plasticisers-fire retardants of general formula:

where group can be in meta-or para-position relative to oxygen atom bound with benzene ring, and R is selected from aryl, oxyaryl, alkyl or oxyalkyl, or plasticisers-antipyrenes of general formula:

in which R is selected from aryl, oxyaryl, alkyl or oxyalkyl, taken in amount of 5–80 wt% of the total weight of the polymerisable mixture; one or more active diluents of general formula:

where R can be in meta- or para-position relative to an oxygen atom bound to a benzene ring, and is H, CN, NH₂ or N(C₃H₃)₂, in amount of 1 to 50 % of the total weight of the polymerisable mixture. Binder composition also includes (2) a polymerisation initiator in amount of 1–20 % of the total weight of the polymerisable mixture, selected from aromatic diamines or bisphenols having a boiling point at vacuum of 0.1 mm Hg not less than 180 °C. Total content of the polymerisable mixture and the polymerisation initiator ranges from 60 to 100 wt% of the total weight of the binder.

EFFECT: invention increases heat resistance of the binder composition and enables to obtain a composite material having high heat resistance after curing at temperatures up to 450 °C, having fusion or vitrification temperature not higher than 50 °C, providing value of melt viscosity in range from 100 to 180 °C below 800 mPa⋅s, and in range from 120 to 180 °C below 300 mPa⋅s.

46 cl, 3 tbl, 45 ex