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The feasibility of SBR/EVA and TPU/PCL composite material for fused deposition modelling

Periyasamy, Raveverma (2017) The feasibility of SBR/EVA and TPU/PCL composite material for fused deposition modelling. Masters thesis, Universiti Tun Hussein Onn Malaysia.


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In this research study, characterization and improvement of SBR/EVA and TPU/PCL polymer matrix composites for the Fabrication of Fused Deposition Modelling (FDM) filament wire was investigated. The limitation of feedstock materials in the FDM process, there are very limited polymer composites mixtures which can produce a flexible filament with a good mechanical properties, the very low amount of research done on flexible filament which can used in footwear and orthotic production, many problems faced by researchers in extruding or utilising flexible filaments in FDM machine are the four main problems highlighted in this research study. The main purpose of this study carried out was to mix several types of mixtures that could produce a flexible filament that will help the AM, medical and footwear industries. Styrene-butadiene rubber (SBR) and ethylene vinyl acetate (EVA) polymers were selected to be tested because it is closely related to elastic behaviour. The thermoplastic polyurethane (TPU) and polycaprolactone (PCL) are selected for their ability to be used as medical grade material and TPU has elastic behaviour which also has potential to be made as flexible filament. PCL is used widely in FDM processes all over the world and it is FDM compatible too. The EVA filled SBR, PCL and filled TPU polymer composites were compounded, injection moulded. The mechanical properties were evaluated by tensile, flexural and hardness tests while the thermal properties were observed and analysed via differential thermal analysis (DTA) and thermogravimetry analysis (TGA). The FDM filament wire with the standard diameter of 1.75mm+0.05 and 3.0mm +0.05 was extruded and tested using FDM machine. The flexural strength and tensile strength of SBR/EVA and TPU/PCL blends showed increment after the blend.TPU/PCL filament successfully used in FDM machine meanwhile SBR/EVA composite failed. The TPU/PCL composites were working in the FDM machine which had achieved the main goals of the research and showed high potential to be studied further in the future.

Item Type: Thesis (Masters)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 27 Mar 2018 03:32
Last Modified: 27 Mar 2018 03:32
URI: http://eprints.uthm.edu.my/id/eprint/9914
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