PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN IMPAK KOMPOSIT POLYESTER DENGAN SERABUT POHON KURMA

MAHENDRA, ALFIN (2023) PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN IMPAK KOMPOSIT POLYESTER DENGAN SERABUT POHON KURMA. Sarjana (S1) thesis, Universitas Islam ''45'' Bekasi.

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Abstract

The use of composite materials is currently growing with the increasing use of these materials which are increasingly widespread. Date palm fiber is a type of fiber derived from plants and is classified as a natural fiber that has the potential to be used as a reinforcement for composite materials. This study aims to determine the effect of the volume fraction of date palm fiber polyester resin on impact toughness and density values. Composites made using date palm fiber reinforcement with a matrix of polyester resin. The fibers were soaked in 3% NaOH alkaline solution for 3 hours, then the fibers were rinsed using distilled water. The length of the fiber is 9 cm while the volume fraction of the fiber is 15%, 25% and 35%. The composite is made by the lay up method and uses glass as the mold container after which the composite or specimen that has been removed from the mold is cut to the size of the ISO 179-1 impact test standard. After conducting research, it was found that the addition of variations in the weight fraction of date tree fiber in the polyester resin matrix composite had a significant effect on impact toughness where the addition of variations in the weight fraction of date tree fiber 35% had a higher impact strength of 9.683 Kj/mm². Compared to the addition of 15% and 25% fiber fraction variations, namely 4.219 Kj/mm² and 6.533 Kj/mm². This also applies to the density test where the 35% fiber weight fraction gets the highest value of 0.78 g/cm³ compared to the addition of 25% fiber weight fraction which gets a value of 0.63 g/cm³ and the lowest value is the addition of 15% weight fraction fiber which is equal to 0.57 g/cm³. Composite failure is caused by the presence of voids which causes uneven mixing between matrix and fiber. Keywords : Composites, Date fiber, Impact, Density.

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