| 摘要 |
FIELD: chemistry.SUBSTANCE: invention is intended for use in chemical, chemical-metallurgical, aviation and space industry. The method includes forming a frame from carbon-carbon composite material (CCCM), filling pores thereof with dispersed carbon filler by growing, in said pores using a catalytic gas-phase method, nanosized carbon in the form of particles, fibres or tubes until achieving content thereof of 3.7-10.9% of the weight of the fibrous frame; saturating with a pyrocarbon matrix using a thermoplastic method with excess methane pressure of 0.025-0.03 kgf/cm, temperature in the pyrolysis zone of 840-920°C and movement speed thereof of 0.1-0.25 mm/h. The obtained CCCM contains said components in the following amount, wt %: carbon fibre - 38.7-46.1; nanodispersed filler - 1.7-4.2; pyrocarbon matrix - 49.7-59.6; and has density of 1.41-1.55 g/cm. The nanodispersed carbon filler is contained in both inter-fibre pores of the frame and inter-filament pores of the carbon fibres.EFFECT: improving strength properties of the CCCM without deterioration of other operational characteristics.2 cl, 2 tbl, 12 ex |
