Effect of Mold Temperature on the Separation and the Orientation during Compression Molding of Fiber-Reinforced Polymeric Composites

섬유강화 고분자 복합재료의 압축성형에 있어서 분리 ${\cdot}$ 배향에 미치는 금형온도의 영향

During compression molding of fiber-reinforced polymeric composites, microstructural changes such as the fiber-matrix separation and the fiber orientation are occurred by the flow of composite materials. Since the nonhomogeneity and anisotropy of composites are caused by the separation and orientation of fibers. On the other hand, the separation and the orientation of fibers are inseparably related to each other. In this paper the degree of nonhomogeneity which is a measure of the separation is obtained using one-dimensional rectangular shaped part compression molding. And the orientation function is measured by the image processing using soft X-rayed photograph and image scanner. We study effects of the mold temperature on the degree of nonhomogeneity and the orientation function.