Reclamation Of Aerospace-Grade Carbon Fibre Prepreg Waste Through Second Impregnation Of Thermoset Polymer Via Hand Lay-Up Process

Juliana, Yaakub (2012) Reclamation Of Aerospace-Grade Carbon Fibre Prepreg Waste Through Second Impregnation Of Thermoset Polymer Via Hand Lay-Up Process. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Carbon fibre reinforced polymer (CFRP) composites have been extensively used because of their excellent performance and lightweight. With continuous and widespread use of these composites in aircraft industries cause its waste constantly accumulated and generated both from manufacturing scrap and end-of-life prepregs. Both environmental and economic factors have driven the development of reclamation routes for the increasing amount of CFRP waste generated. The main object ive of this research is to compare the properties of second impregnate carbon fibre prepreg/epoxy laminate composite (i-CFPE) and without second impregnate laminate composite (w-CFP). The influence of the number of layers _was also investigated. The laminated composite samples were tested for tensile test, impact test and flexural test in accordance with ASTM standard. For the environmental properties, water absorption test were conducted. Whereas, for fracture morphology of the samples were observed under scanning electron microscope (SEM). The overall results showed i-CFPE has presented higher mechanical properties compared with w-CFP. The increasing number of layers significantly increases the water absorption of the produced laminated composite but decreasing with time as it reaching a certain value of saturation point where no more water was absorbed and the composites water content remained constant. Morphology observation on the tensile fractured surfaces of i-CFPE and w-CFP laminated composites revealed energy absorption mechanism such as fibre breakage and fibre pull-out. In overall, the preliminary research have been successful conducted and achieved all the listed research objectives. Potent ial of i-CFPE laminate composite in general purpose product are summarized.

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