| 초록 |
In this work, polyacrylonitrile nanofibers were fabricated by electrospinning to prepare nanofibers-reinforced composites. The effect of PAN nanofibers on thermal properties and wear and friction behaviors of nanofibers-reinforced composites were examined by different contents of PAN nanofibers. Morphology and diameter distribution of PAN nanofibers were determined by SEM observation. Thermal properties of the composites were investigated with differential scanning calorimetry, thermogravimetric analyzer, and dynamic mechanical analyzer measurements. Friction and wear behaviors of the composites were examined using friction and wear tester. As a result, the fiber diameter decreased in increasing an applied voltage. However the optimum condition for a fiber formation was 15 kV and the prepared PAN nanofibers were useful in fiber-reinforced composites. The PAN-based nanofibers-reinforced composites showed an improved thermal properties and loss of friction. |
