Improving Preferred Orientation and Mechanical Properties of the PAN-Based Carbon Fiber Precursors by Using Saturated Steam Stretching Process

Han Qiu; Hui Fang Chen

doi:10.4028/www.scientific.net/MSF.789.148

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Improving Preferred Orientation and Mechanical Properties of the PAN-Based Carbon Fiber Precursors by Using Saturated Steam Stretching Process
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HomeMaterials Science ForumMaterials Science Forum Vol. 789Improving Preferred Orientation and Mechanical...

Improving Preferred Orientation and Mechanical Properties of the PAN-Based Carbon Fiber Precursors by Using Saturated Steam Stretching Process

Abstract:

The saturated steam stretching process of the PAN-based carbon fiber precursors was studied. The orientation,crystallinity, and mechanical properties of the PAN fiber were analyzed by means of X-ray diffraction and XQ-2 tensile testing machine. The results demonstrated that the property of PAN fiber was very sensitive to the temperature, and the tensile strength and orientation degree increased with increasing temperature, which might be attributed to the changes of the super molecular structure. The stretching ratio also had great influence on the crystalline orientation of PAN fiber. Therefore, the temperature and stretching ratio for a certain fiber of the stretching process were matched and limited.