Abstract
<p>The composite is a combination of two or more materials to produce a new material with unique properties compared to the nature of the base material prior to mixing and surface bonding occurs between each constituent material. The purpose of this research is to know the influence of waste material composition from plant fiber, that is young coconut fiber, banana stem, and calendar waste paper to bending strength on composite board by using Epoxy resin wood type. The process of printing the composite board is done in the Laboratory of Integrated Mechanical Engineering University Proklamasi 45 Yogyakarta. The three raw materials that have been crushed and dried, mixed with the breaking time of each 5" and 10" with their respective ingredients composition, namely Young Coconut Fiber: Banana Stem Fiber: Calendar Waste Paper =25:25:50; 25:50:25; 50:25:25 (%). Each treatment was repeated 3 times. Observation was done by calculating raw material composition and time of destruction process against bending strength of composite board which resulted very significant effect on water content, fracture, and flexibility of composite board. Bending strength testing is performed using a robust Universal Testing Machine (UTM). The result of this research produced the most optimum material composition of bending strength into composite board, ie composition III with the duration of destruction for 5", that is the average MoE value of 17.069,76 kg/cm² and the average value of MoR is 83,78 kg/cm². From this research is expected to get new engineering technique from agriculture waste become composite board with economic value.</p>
Highlights
The result of this research produced the most optimum material composition of bending strength into composite board, ie composition III with the duration of destruction for 5", that is the average Modulus Elastisitas (MoE) value of 17.069,76 kg / cm2 and the average value of MoR is 83,78 kg / cm2
more materials to produce a new material with unique properties compared to the nature of the base material
prior to mixing and surface bonding occurs between each constituent material
Summary
Komposit merupakan salah satu jenismaterial di dalam dunia teknik yang dibuat dengan penggabungan dua macam bahan yang mempunyai sifat berbeda menjadisatu material baru dengan sifat yang berbeda pula. Bahan-bahan serat alam merupakan kandidat sebagai bahan penguat untuk dapat menghasilkan bahan komposit yang ringan, kuat, ramah lingkungan serta ekonomis. Sisa pengolahan hasil pertanian yang jumlahnya melimpah di sekitar lingkungan kita, seperti serat kelapa muda dan batang pisang dapat dijadikan sebagai penguat untuk komposit polimer. Melimpahnya limbah padat dari pertanian dan limbah kertas, serta pemakaian kayu/papan yang meningkat, maka pembuatan papan komposit merupakan salah satu alternatif dalam pemanfaatan limbah-limbah tersebut untuk menghasilkan produk-produk inovatif dan kreatif sebagai bahan dasar pengganti kayu/papan dan juga untuk bahan baku di industri kreatif. Melalui penelitian ini diharapkan bisa dihasilkan komposisi yang optimal dalam mengolah limbah pertanian dan sampah kertas yang tidak termanfaatkan secara maksimal menjadi papan komposit yang bernilai ekonomis
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