| 摘要 |
PURPOSE:To increase the density and increase the strength by precipitating carbon base material to bundles of carbon fibers by gas phase impregnation to integrate them. CONSTITUTION:Bundles of 100-20000 carbon fibers of an average diameter of 3-15mum are supplied. These fiber bundles are densed by CVI method to have a fiber volume rate of 35-80% at a residual pore rate of 10% or less. (1) shows each carbon fiber, and (2) shows carbon generated by CVI. (4) shows a carbon fiber bundle to be supplied to a reaction furnace continuously. (5) shows a gas supply means to supply material gas and carrier gas, so flow-controlled gas is supplied to the reaction furnace 6. The reaction furnace 6 is a heating furnace for heating the carbon fibers, and material gas is heat decomposed in the surface of the carbon fibers to be carbonized. The carbon fiber bundle 4 passes some such reaction furnaces, while carbon matrix fills the intervals between the fibers, so a carbon fiber-reinforced carbon wire is manufactured. A high density wire having good mechanical characteristics can thus be obtained. |
