PENGUJIAN SIFAT MEKANIK KOMPOSIT SERBUK KULIT BUAH PINANG UKURAN D<75 µm DAN POLYESTER DENGAN STANDAR ASTM

Abstract

The skin of Areca nut (Arecacatechu L.) is one of the agricultural industrial wastes that can be used as a source of fiber or powder for composite materials. This study aims to determine the mechanical properties of the impact and flexural properties of polyester composites and powder size D <75 75m. The main ingredients for the formation of the composites consisted of polyester and Areca nut peel powder measuring D <75 µm. The method used in making composites is the blending method with variations in the composition of the Areca nut peel powder 20%, 30%, and 40%. The impact test is examined by following ASTM D 265 procedures and standars, while the bending test is examined by ASTM D 790-02 procedures and standars. From the test results, it can be seen that the best mechanical properties in the bending test are specimens with a composition of 20: 80% to a value of 51.28 MPa, and the lowest is a specimen with a composition of 40: 60% of 32.73 MPa. Whereas in the impact test, the best mechanical properties were specimens with a composition of 20: 80% to a value of 0.006516 J / mm2, and the lowest was a specimen with a composition of 40: 60% of 0.003505 J / mm2.