PENGARUH TEKANAN VACUUM TERHADAP KEKUATAN TARIK DAN KEKUATAN LENTUR PADA BIOKOMPOSIT SERAT PURUN TIKUS (ELEOCHARIS DULCIS)
Abstract: Composite material
made from polymer biocomposite material is becoming an alternative of the metal
and is widely applied in the manufacturing industry. It is due to their
corrosion resistanceand high strength ratio of specific gravity. Natural fiber
is used for a reinforcement in compositesinstead of synthetic fiber such as
glass fiber because of its environmental friendly and widely available in
nature. Meanwhile, the application of the natural fiber needs to be optimized.
Themethod used to produce the composite is by isolating and vacuuming mold
composite specimens (biocomposites) in a container (the media). It is used to
reduce the pressure around, so thecomposite (biocomposite) is not directly
contacted with the air. Then, the void in composite thatcan decrease the
strength of the composite will not be formed. The matrix used in this study is157
BTQN Polyester by using MEKPO with concentration of 1% as catalyst. The vacuum
pressure used in this study are 6 cmHg, 26 cmHg, 46 cmHg and 76 cmHg (1 atm).
This study includes ofthree steps, firstly, the spesimen tested by using tensile
and flexure testing, secondly, evaluatedby using SEM, and thirdly, fracture
observed by using macro photos. The results shown that there are significant
effect of vacuum pressure level to the biocomposite tensile strength and
flexuralstrength. Specimens with angular orientation 0/90/0/90 shows that the
tensile strength of 54.7 MPa and bending strength of 243 MPa.
Penulis: Yusuf Rizal Fauzi,
Achmad As’ad Sonief, Wahyono Suprapto
Kode Jurnal: jptmesindd160670