Prepartion of short carbon fiber reinforced polyphenylene sulfide composites by impregnation in suspension

摘要

A new method based on impregnation in suspension has been developed to prepare short carbon fiber reinforced polyphenylene sulfide composites. It is shown that the new method can overcome effectively the difficulties generally experienced in preparing the composite by melt extrusion. In this paper, the influence of the processing parameters and the processing modes on the preparation of the fiber granular compounds have been investigated and evaluated. With proper suspension concentration and processing conditions the fiber volume fraction of the fiber granular compounds is able to achieve values as high as 0.75. Satisfactory mechanical performance of the composites made of the injection granulates by using this technique is obtained.