BigPatents India

The present invention of developing carbon/carbon composites having high density of 1.8 â¼³JFFXWLOL]HVDVSHFLDOSURFHVVLQJtechnique, in which a special type of the sample holder was designed for heat treatment of polymer composite material up to 1000 degree C. In this sample holder, green composites are placed and are covered from both the sides by two other plates. Finally, these three plates were sandwiched; keeping plate containing composite samples in the center. Now this sample holder was kept for carbonization up to 1000 degree C in an inert atmosphere keeping the desired heating rates. Now these, carbon-carbon composites were further heat treated to 2600 degree C in a furnace in inert atmosphere at the desired heating rates. After graphitization i.g. heat treatment to 2600 degree C, the density of carbon-carbon composites comes out to be in the range of 1.8-1.85 g/cc, which is suitable for various structural applications.