PENGARUH FRAKSI VOLUME IJUK AREN TERHADAP KEKUATAN BENDING DAN MORFOLOGI KOMPOSIT POLIPROPILENA

ANDARI P. GIRSANG, REZA (2022) PENGARUH FRAKSI VOLUME IJUK AREN TERHADAP KEKUATAN BENDING DAN MORFOLOGI KOMPOSIT POLIPROPILENA. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Nowadays, the use of polymer composites with natural fibers is widely developed because of the price is relatively cheap and environmentally friendly. The problem that is often encountered in the manufacture of composites is the final stage, also know as finishing, where the mold sometimes fails and is defective. The purpose of this study was to determine the bending strength and fracture morphology of polypropylene composites with palm fiber reinforcement. The reinforcing material used in the manufacture of composites is palm fiber and the matrix is polypropylene plastic. The method used is compression molding and heated in the oven at 250ºC for 60 minutes. The variations used in this study were volume fractions of 0%, 25%, 35% and 45%. From the test results of the palm fiber composite specimens, the highest bending strength at 25% volume fraction was 93.13 MPa and the lowest bending strength at 45% volume fraction was 80.6 MPa. Based on the results of the SEM test, it can be seen that there are voids and fractures in the composite. Therefore, it can be concluded that the increasing number of palm fiber fibers decreases the bending strength due to the imbalance between the mixing of palm fiber fibers and the matrix.

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