Physical and Mechanical Properties of Pyro-Compacted Carbon-Carbon Material on a Fabric Warp

The work showed that a change in the length of the samples within 60–100 mm and a width within 12–25 mm, as well as the shape of the samples, did not have a significant effect on the change in the mechanical characteristics when tested in compression in both directions of the UPA-4 material obtained by deposition of pyrolytic carbon from the gas phase on the warp made of graphite viscose fabric URAL-T-22. The carbon matrix of this material was formed as a result of the gradual deposition of pyrolytic carbon from the gas phase at a temperature of 980°C for ~150 h and at 1070°C for ~100 h. The paper presents the results of tests at different temperatures. Tests of flat specimens for bending, compression, and stretching were performed at room temperature. To assess the heat resistance of the material, samples were tested for bending in a neutral argon medium at a speed of active capture of 5 mm/min in a temperature range of 20–2800°C. The tests have shown that the developed material is structural and heat-resistant, since in the temperature range up to 2200°C it retains its bending strength, and as the temperature rises to 2500°C, it deforms with plasticity without breaking.