Pengaruh Ukuran Partikel Pengisi Terhadap Sifat Mekanik Komposit Poliester/Abu Sekam Padi

Abstract

The study the focused on the effect of particle size toward mechanical properties of composite material. The composite material has been prepared from polyester as matrix and rice husk ash particles as filler. This research was conducted with the variations of particle size of white rice husk ash upon the mechanical properties. The mesh of particles size used in this composite are 50, 70, 100, and 400, with a matrix and filler ratio of 75%: 25% and the resin used was polyester with the stir casting method. The mechanical properties tests that carried out in this study were tensile testing, bending tests, compression tests, and impact tests. All the tests were performed using the ASTM standard for composite material testing. The result shows that small mesh number has significantly improve mechanical properties of composite material, the greatest tensile strength found in the mesh number of 400 with a value of 28,101 MPa, a bending strength of 56,187 MPa, a compressive strength of 30.8 MPa, and an impact value of 4194 J/m2.