| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: present invention pertains to making carbon based composite materials and products made from the material, intended for use in conditions of complex static and dynamic loads at temperatures up to 2000C in an oxidising medium and high-speed streams of end products of fuel combustion (aerospace engineering, high-temperature electrothermal equipment etc.). The method involves stacking coal-fibre filler in form of packets of work pieces with a bulk structure, saturation with a carbon forming binding substance, moulding, carbonisation, compression and ceramising. Saturation of the filler with coal-fibre is done before putting the packet into a complex binding substance, containing an oligomeric non-coking resin in form of a 40-80 wt % solution of oligomeric unsaturated polyester resin in a monomer of unsaturated ester and oligomeric carbon forming resin in form of 45-55 wt % alcoholic solution of oligomeric phenol-formaldehyde resol resin. The ratio of non-coking to carbon forming oligomeric resin is (30-40):(60-70) wt %. Content of complex binding substance in the filler saturated with coal-fibre is 30-50 wt %. Polymerisation of non-coking resin after saturation is done using ionising radiation, and the carbon forming resin is polymerised at 130-190C temperature in the process of moulding carbon-fibre reinforced plastic work pieces. ^ EFFECT: obtaining material with good physical and mechanical and operating characteristics. ^ 6 cl, 3 tbl, 1 dwg |
