Process Optimization for Preparing High Performance PAN-based Carbon Fibers

Optimum process Conditions were investigated for maximizing the mechanical properties of the carbon fiber by from wet spun polyacrylonitrile (PAN) fiber precursors The process variables chosen were treatment temperature. applied tension In stabilization Process. The temperature profile of the stabilization was set oil the basis of exothermic peaks of the differential scanning calorimetry (DSC) result Both tensile strength and modulus increased with holding at Onset temperature of the exothermic peaks for extended duration,and with a higher heating rate Lip to the onset temperatures at a given applied tension among the experimental Conditions The increase in load monotonously Increased the tensile modulus, on the other hand. the tensile strength was maximum at the load of 15 mg/filament (T15) The load 20 mg/ filament (T20) was considered to be exceeded to form oriented crystalline structure. possibly introducing more defects in the fiber than under load of T15 The sample CP3-T15 O5 H30 showed the best tensile properties among the samples experimented whose tensile properties are compatible with the commercialized grade of general purpose carbon fibers even Lit low carbonization temperature such as 800 degrees C (the carbonization temperature in the commercial process 1300 similar to 1500 degrees C.