Pengaruh Variasi Suhu Penekanan Terhadap Kualitas dan Sifat Mekanik Serat Daun Nanas Berbasis Resin Epoksi untuk Aplikasi Komposit

Suhartono, Roni
Setiana, Yadi Hikmah
Komarudin, Didin

IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Vol 4 No 3 (2025): Desember

This study aims to evaluate the effect of varying pressing times at a constant temperature, using the hot-press method and the same resin mixture, on the material's quality and mechanical properties. Tensile testing was conducted in accordance with ASTM D3039 using specimens measuring 250 × 20 × 2 mm to ensure accurate mechanical measurements on thin laminates. The process began with selecting healthy pineapple leaves, followed by extrusion. A chemical treatment was then applied by immersing the fibers in a 5% NaOH solution for 2 hours. The fibers were subsequently mixed with resin and pressed for 20, 30, and 40 minutes at 100 °C. The results showed that the first sample, pressed for 40 minutes, achieved a tensile strength of 55.25 MPa. The second sample, pressed for 30 minutes, reached 50.38 MPa, while the third sample, also pressed for 30 minutes, achieved 47.8 MPa. The 40-minute pressing time can be considered the recommended working point, as evidenced by the highest tensile strength of 55.25 MPa.