Pengaruh Penambahan Filler Karbon Aktif Tempurung Kelapa Terhadap Kekuatan Impak, Bending, dan Densitas Komposit dengan Penguat Serat Kapas dan Pandan

Abstrak

This study examines the effect of adding activated carbon filler from coconut shell on the mechanical and physical properties of hybrid composites using pandan and cotton fibers as reinforcement in an epoxy matrix. The composites were made using the resin infusion method, with variations in activated carbon filler content of 0%, 1%, 3%, and 5% by weight. Tests included impact, bending, and density tests. The results of the density test showed that the addition of 3% filler produced an optimal density of around 1.1213 g/cm³, which indicated a more even distribution of filler in the matrix. In the flexural test, the composite without filler had the highest maximum stress of 50.856 MPa, but the composite with 3% filler showed an increase in performance compared to the variations of 1% and 5%, with a flexural stress of 33.018 MPa and the longest test time. The impact test showed that the highest toughness was achieved in the composite with 3% filler, with an absorbed energy of 0.0128 J/mm². Overall, the addition of coconut shell activated carbon has a significant effect on improving material performance, with a concentration of 3% as the optimal composition that provides the best balance between density, flexural strength, and impact toughness.

Kata kunci

• Actived carbon
• Coconut Shell
• Composite