PURPOSE: To obtain a light carbon fiber carbon composite material with an excellent heat resistance property, and having high strength by carrying out the primary carboni zation in laminating carbon fibers and a plate comprising pitch, and making it being infusible then, after that, performing the secondary carbonization and third carboniza tion in turn.
CONSTITUTION: A plate made by infiltrating melted pitch into the bundle of carbon fibers is laminated to have a desired thickness, and then put into a mold in order that the primary carbonization is conducted such that a load is applied thereon from the upper part, and heated by the temperature in the range of 400 - 500°C in a non- oxiding atmosphere, however, the load applied thereon should be selected in the range of 0.5 - 5kg/cm2. And, after an infusible treatment is performed by heating it in the range of 150 - 400°C in an oxidizing atmosphere, the secondary carbonizing treatment is conducted by heating it at the temperature of the range of 600 - 800°C under a load in the non-oxidizing atmosphere, however, the load should be selected in the range of 5 - 20kg/cm2. Furthermore, the third carbonizing treatment at the temperature of 800°C or high in the non-oxidizing atmosphere. As a result, a carbon fiber carbon composite material can be obtained, in which fibers being light weight, having an excellent heat resisting property, and high strength is arranged in one direction.
IMAMURA TAKESHI
MATSUMOTO SHIROU
KOBAYASHI KAZUO
YOKOYAMA AKIRA
SHIMOMURA SEIJI
TSUCHITANI MASATOSHI
NIPPON CARBON CO LTD
KOA OIL CO LTD
MARUZEN PETROCHEM CO LTD
| JPS62246864A | 1987-10-28 |