The Mechanical Properties Of Paddy-Husk Polypropylene Composite

Sulayan, Nur Syafiqah (2020) The Mechanical Properties Of Paddy-Husk Polypropylene Composite. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The demand for eco-friendly materials, the degradation frequency, and the petroleum-based plastics prices and pressing environmental regulations have all triggered growing interest in composite materials.Natural fiber is used as an alternative to conventional fiber reinforcement as it iscost-effective and environmentally friendly. This project investigates the mechanical properties of Paddy-husk reinforced polypropylene with different filler loading which are 20%, 30% and 40% of paddy-husk powder (PHP). The PHP was weighed according to their respective filler loading and then mixed with polypropylene in the internal mixer. Hot press machine was used to press the sample into a board. The board was then cut into shapes according to the standard ASTM for each testing. Three tests were carried out which are hardness test (ASTM D2240), tensile test (ASTM D039) and flexural test (ASTM D790). The data from the experiments were then tabulated and analysed to know their properties. The mechanical properties of the sample reduced as the paddy husk powder was not treated. Based on the experiments with increasing PHP filler loading of 20%, 30% and 40%, the hardness decrease, the tensile stress increased, the Young modulus increased. When the PHP filler loading increased, the flexural strength decreased, and the flexural modulus increased.

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