PENGARUH POST CURING TEMPERATURE TERHADAP KEKUATAN UJI TARIK DAN UJI IMPAK KOMPOSIT POLYESTER BERPENGUAT SERAT SABUT KELAPA

FAZAL, MUHAMMAD RAFLI and Mataram, Agung (2024) PENGARUH POST CURING TEMPERATURE TERHADAP KEKUATAN UJI TARIK DAN UJI IMPAK KOMPOSIT POLYESTER BERPENGUAT SERAT SABUT KELAPA. Masters thesis, Sriwijaya University.

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Abstract

Composite materials are engineered materials made by combining two or more materials to create a new combination of properties that are different from those of the individual materials. This study focuses on natural fiber composites using coconut coir fiber as reinforcement, with a post-curing treatment applied to enhance the mechanical strength of the composite. Post-curing is a process involving the heating of test specimens at specific temperatures to improve the properties of the composite. The objective of this study is to investigate the effect of post-curing temperature on the impact strength of polyester-coconut coir fiber composites. The mechanical property observed in this research is the impact strength of the composite material. The specimens were fabricated using the mixing method for material blending and the hand lay-up method for creating the composite specimens, following the dimensions of ASTM D638-02 Type I and ASTM D256 standards for impact testing. The specimens were heated in a conventional oven for one hour at different temperatures: non-post curing, 110°C, 120°C, and 130°C, and compared with specimens without post-curing treatment. The prepared specimens were tested for impact using a charpy methode. The results showed that the optimum tensile and impact strength values of the polyester-coconut coir fiber composite were 9.2 N/mm² and 0.1663 J/mm², respectively. Therefore, the polyester-coconut coir fiber composite at a post-curing temperature of 120°C can be used as particleboard type 100, which requires a minimum tensile strength of 1.5 kg/cm². In general, the polyester-coconut coir fiber composite meets the SNI 03-2105-1996 standard requirements in terms of tensile and impact strength. This polyester-coconut coir fiber composite is also nearly suitable as an alternative material for making SNI-standard helmets, based on tensile and impact strength, as the tensile strength of SNI-standard helmet materials is 10 N/mm², while the tensile strength of the polyester-coconut coir fiber composite is 9.2 N/mm².

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Komposit Serat Sabut Kelapa, Post curing, Kekuatan Tarik, Kekuatan Impak, Polyester, Suhu.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1125-1345 Machine shops and machine shop practice > TJ1180 Machining, Ceramic materials--Machining-Strength of materials-Machine tools-Design and construction
Divisions:	03-Faculty of Engineering > 21101-Mechanical Engineering (S2)
Depositing User:	Muhammad Rafli Fazal
Date Deposited:	07 Nov 2024 01:27
Last Modified:	07 Nov 2024 01:27
URI:	http://repository.unsri.ac.id/id/eprint/159042

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