Studi Performa Mesin Pencacah Polimer Komposit Berbasis Uji Laboratorium

Sianturi, Danial Jack Marbis
Tumangger, Theo Fredrik
Aldori, Yopan Rahmad
Iswandi, Iswandi
Umroh, Bobby

IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Vol 4 No 2 (2025): Agustus

Polymers are the result of monomer polymerization with a lower density than metals but a much smaller elastic modulus, making them less rigid and strongly affected by temperature. This study evaluates the performance of a laboratory-scale crushing machine for polypropylene blended with activated carbon at varying compositions. The machine employed carbon steel rotary blades driven by a 1 HP electric motor through a gearbox transmission. Results showed average crushing times of 3.5–4 minutes/kg. Pure polypropylene produced a 72% fine fraction, while adding 10% activated carbon reduced it to 65%. Crushing efficiency remained above 85%, demonstrating stable performance and feasibility for composite material applications.