The investigation of the damping and toughness properties of 3D printing filament made from ground tyre rubber and polypropylene composite

Mat Tamidzi, Muhammad Ammar Suffian (2024) The investigation of the damping and toughness properties of 3D printing filament made from ground tyre rubber and polypropylene composite. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

An alternative to the environmental problems caused by tyre waste is utilizing watse tyre into the composite. The waste tyre were crushed into ground tyre rubber (GTR) and incoporated into the composite matrix. GTR has drawn interest because of its distinct qualities and prospective uses across several sectors. The goal of this study is to produce 3D printing filament with the material made of ground tyre rubber and polypropylene (r-RubPPc) with different fiber loading. Second, to investigate toughness and damping properties of 3D printed sample for r-RubPPc composite. The methodology used in this study is to determine the damping properties and toughness of the r-RubPPc composite with different percentage of GTR fiber loading (1%, 3% and 5%). Vibration test was conducted to study the damping properties of r-RubPPc composites. The result shows damping properties increased by 58% with the increasing to 5% of rubber content. The main cause of these desirable variations is the elastomeric properties of rubber particles, which become more prevalent as the 3D printed composite's rubber content rises. Rubber is extensively utilized for dampening vibrations in a variety of structures because to its high bulk modulus and low elastic modulus. However the damping properties of r r-RubPPc treated with silane experienced decrement by 23%. This shows silane treatment enhance adhesion between GTR fiber and PP matrix which resulted in lesser voids in the composite filament which has been shown in morphological of the silane treated filament. The lesser voids resulted from well embedded GTR fiber in PP matrix. According to results from water absorption test, silane improved the interfacial adhesion between PP and GTR, with a significant decrease of 23% observed for the 3% of GTR treated with silane. Impact test findings shows an increase in toughness of r-RubPPc composite as the amount of rubber in the 3D printed specimen increases. The result shows the percentage of 3% GTR fiber loading is in an optimum state that can be added to PP for filament fabrication and 3D print specimens.

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