METHOD AND DEVICE FOR DRAWING CARBON FIBERS FROM SOLVATED RESIN Russian patent published in 2000 - IPC

FIELD: industries where carbon fibers or carbon- base fibers are used. SUBSTANCE: solvated mesophasic resin is heated to fluidity state and then it is fed to molding head for drawing the fiber by gas flow. Slotted or circular molding head is provided with at least one capillary tube with open first and second ends. Arranged inside capillary tube is unit for breaking the structure of flow, for example, mixer, sand, metal powder, flow converter, screen, fabric, fiber, filter medium or their combinations. Ratio of capillary length (L) to its diameter (D) ranges from 2 to 10. Fiber is drawn at the capillary outlet by gas flow, after which it is subjected to carbonization or graphitization. If necessary, fiber is stabilized through oxidizing. Fiber has non-radial structural of cross section. EFFECT: improved mechanical properties of fibers, low heat conductivity. 21 cl, 4 dwg, 1 tbl