Preparasi Dan Karakterisasi Komposit Karet Alam Sir 20-Arang Aktif Biji Alpuk…

vi SUMMARY Composite is a material wich is produced from two or more constituent material to form a new materials. Composite materials prepared by mixing matrix and fillers. The composite material used in this study consists of SIR 20 natural rubber as a matrix with the addition of 5% avocado seed activated charcoal and cast sand as a filler. Composites are made with a variety of fillers, con…