SIFAT MEKANIS KOMPOSIT POLIESTER/SERAT MENGKUANG: EFEK VARIASI FRAKSI VOLUME SERAT

Bakri Bakri, Sri Chandrabakty, Mustafa Mustafa, Edwin Fadly

Abstract




ABSTRAK
Komposit serat alam telah berkembang pesat dan memiliki potensi alternatif pengganti komposit serat
sintetik. Salah satu serat alam yang memiliki potensi sebagai penguat komposit adalah serat batang
mengkuang (Pandanus atrocarpus). Dalam tulisan ini, efek variasi fraksi volume serat terhadap sifat
mekanis komposit poliester/serat mengkuang telah dievaluasi. Sebelum serat mengkuang dibuat komposit
terlebih dahulu dibersihkan dengan larutan 5%NaOH. Selanjutnya, komposit poliester/serat mengkuang
dicetak dengan variasi fraksi volume serat 10%, 20% dan 30%.  Komposit kemudian diuji tarik, bending
dan impak. Hasil penelitian menunjukkan kekuatan tarik, kekuatan bending dan kekuatan impak komposit
tertinggi terjadi pada fraksi volume serat 30%.

Kata kunci: komposit, serat mengkuang, poliester, sifat mekanis  


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