Processability And Characteristic Of Thermoplastic Reinforced Comminution For Out Of Condition Aerospace Grade Carbon Fiber Prepreg Waste Via Melt Compounding Process

Mohamad Zarul, Drahman (2012) Processability And Characteristic Of Thermoplastic Reinforced Comminution For Out Of Condition Aerospace Grade Carbon Fiber Prepreg Waste Via Melt Compounding Process. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Carbon fiber reinforced thermoplastics are increasingly used for high performance composites, particularly for the aircraft industry. The main raw materials used in this project are polypropylene (PP) as matrix materials and waste carbon fiber prepreg as reinforcement materials. This study focuses on the processing and characteristic of carbon fiber prepreg reinforced polypropylene produce by melt compounding using an internal mixer. Waste carbon fiber prepreg used in this study is out-life and supplied by CTRM Sdn. Bhd. The scope of work includes formulation of the composites, evaluation of mechanical, thermal and morphological properties. Waste carbon fiber prepregs were crushed into small particle and divided into two conditions; for sample A, which is comminute carbon fiber prepreg (c-CFP) and for sample B (c-CF), comminute carbon fiber prepreg were dried in an oven at 220⁰C for one hour. The composites were prepared by compounding in internal mixer at 180⁰C, 50 rpm for 10 minutes. Samples were tested for physical and mechanical properties such as density measurement (ASTM D792), tensile strength (ASTM D638), flexural strength (ASTM D790) and hardness test. The morphology was observed using Scanning Electron Microscopy (SEM).The hardness, toughness and impact strength increase up to 50% with the addition of carbon fiber loading at 3% in polypropylene matrix. It was observed that comminute of carbon fiber sample A (c-CFP) produced better composites than comminute carbon fiber sample B (c-CF) regarding to its higher interfacial interaction of matric-carbon fiber.

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