Abstract:
A method for manufacturing polycarbosilane is provided to efficiently prepare polycarbosilane including impurities caused by a catalyst by using an inexpensive catalyst and to easily remove a reaction catalyst in a synthesizing process. A method for manufacturing polycarbosilane comprises a step of synthesizing polycarbosilane from polydimethylsilane by using alumina powder as a catalyst. The catalyst is mixed with alumina powder, zeolite inert ceramics or Lewis acid solid acid catalyst. The method further comprises the steps of: providing an organic metal precursor; and removing the catalyst by filtering or centrifuging the manufactured polycarbosilane.
Abstract:
A porous polycarbosilane tube and a method for manufacturing the same is provided to control the thickness of tube wall freely due to high specific surface area of the wall and the developed pore structure and to ensure excellent high strength, heat resistance, corrosion resistance and environmental proofing property. A method for manufacturing polycarbosilane tube comprises a step for extruding polycarbosilane in a fibrous type; a step for heat-treating it in the oxidizing atmosphere and hardening from the surface of polycarbosilane to form a uncured part on the fibrous polycarbosilane central part; and a step for forming hollow by dissolving the uncured central part of the fibrous polycarbosilane with a polar solvent.