Analisis Karakteristik Kekuatan Tarik Serat Buah Bintaro Berpenguat Resin

Abstract

The development of natural fibers to strengthen composite materials is increasing because the main ingredients of natural fibers in Indonesia are very abundant and the composite industry is increasing in Indonesia to get more alternative composite materials. In this study, bintaro fruit fiber (Cerbera mangos) was selected for the manufacture of composites. because bintaro fruit has not been widely used so that it can be used as a filler material for composites. Because bintaro fruit has lignocellulosic fibers that resemble coconuts. by using liquid reinforcement (reinforcement) and polyester yukalac 157 BQTN as a binder matrix and mepoxe catalyst to become a hardener of the resin. The results of the data that have been studied, polyester resin mixed with Bintaro fruit fiber reinforcement with a volume fraction of 10% 20% and 30% and the fiber was treated with 5% NaOH alkali with no treatment and treatment time of 2 hours, 4 hours and carried out mechanical tests such as tensile tests. and strain test and physical test, namely the density test. This test was conducted to obtain the effect of fiber tensile strength and duration of alkali treatment on the strength of Bintaro fruit fiber composites. By getting the best strength in the tensile strength test, namely at 30% fiber volume with 2 hours alkali treatment (22.87 MPa), strain test at 20% fiber volume at 2 hours alkali treatment (0.062 mm/mm), density test i.e. volume fraction 30% with 2 hours of alkaline treatment (2.158 g/cm3).