ANALISIS KUAT TARIK DAN STRUKTUR MIKROSKOPIS BAHAN KOMPOSIT EPOXY SERAT KULIT JAGUNG DAN PARTIKEL BAN BEKAS

Abstract
The amount of waste tires that cause various problems in the environment where if the old tires are burned it will cause environmental pollution, but if the old tires are left alone, it will also take a very long time to decompose in nature. Therefore, waste tires can be used as composite materials. To increase the strength of composite materials, natural fibers can be used, one of which is corn husk fiber. This research method uses three materials, namely corn husk fiber, waste tire rubber and epoxy in the manufacture of composites. With a percentage of corn husk fiber of 10%, tire particles of 0% and epoxy of 90%, the highest tensile test result values of 48.96 N and 2.706 N/mm2 were obtained respectively for tensile load and maximum tensile stress. While the lowest tensile test results with values of 34.01 N and 1.417 N/mm2 were obtained on 0% tire particle composites, 10% corn husk fibers and 90% epoxy. From the results of tensile tests and tensile stress, the addition of corn husk fibers less affects the tensile strength of the composite. The results of microstructure observations show that the lack of pressure load in the specimen manufacturing process creates air cavities in the specimen.
Keywords: corn husk fiber, waste tire and epoxy particles, tensile test, micro structure test