Preparation and Characterization of Oil-Based Pitch Carbon Fiber by Novel Melt-Electrospinning Process
- Preparation and Characterization of Oil-Based Pitch Carbon Fiber by Novel Melt-Electrospinning Process
- 김진훈; 배병철; 이성호; 양샤핑; 류승곤; 이영석
- Pitch; Carbon fiber; Melt electrospinning
- Issue Date
- carbon 2012
- Isotropic pitch-based carbon fibers are widely used as reinforcement in composites or as raw material for the preparation of highly porous materials. It is well known that these carbon fibers are usually produced by melt spinning .
In this work, we have studied the feasibility of using oil-based pitches for the preparation of non-woven typed carbon fibers by novel melt-electrospinning process. The precursor pitch was modified at various reaction temperatures from the petroleum naphtha cracking bottom (NCB) oil. The modified pitches were investigated in the yield, softening point, elementary analysis, and molecular weight distribution, and were melt-electrospun to certify the optimum reforming conditions. For the optimization in the melt-electrospinning of these modified pitches, the influence of the spinning temperature, extrusion pressure, winding speed, voltage and the interrelationship of these factors upon the microstructure and diameter of the fibers was studied. Non-woven pitch-based carbon fiber obtained by stabilization (under air atmosphere at 200 ℃ for 8 h) and carbonization (under N2 atmosphere at 1000 ℃ for 1 h). Figure 1 is the SEM results of Pitch-based carbon fiber manufactured to various conditions.
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