COMPOSITE MATERIALS CONTAINING PPTA AND NANO-TUBES Russian patent published in 2009 - IPC D01F1/10 D01F6/60 D01D5/04 D01D1/02 C08K7/06 B82B1/00 

FIELD: metallurgy.

SUBSTANCE: method of obtaining includes following stages: a) addition of 12 wt % and less of nano-tubes, described by subject ratio, at least, equal to 100, and diametre of cross section equal to 5 nm or less, to sulfuric acid at temperature, exceeding solidification temperature of sulfuric acid; b) reduction of temperature up to value, less than solidification temperature of sulfuric acid, and blending during the time period, enough for solidification of mixture; c) addition of poly-p-phenilic-terephthalamide (PPTA) to solid mixture; and d) heating up to temperature exceeding temperature of solidification, and blending of mixture with following spinning or watering, or forming of received mixture. Material in the form of complex fibre or filament contains at least 5 filaments and is described by ultimate tensile strength, at least equal to 1.5 GPa and modulus of elasticity at least equal to 50 GPa.

EFFECT: upgraded characteristics.

12 cl, 1 tbl