Pengaruh Variasi Holding Time dan Temperatur Paduan Polipropilena (PP) dengan Serat Sabut Kelapa Terhadap Kekuatan Tarik dan Bending Pada Proses Injection Molding
Abstract: Utilization of
composite materials as an alternative to metal materials in the expanding field
of engineering. This is because the advantages possessed by Composite materials
such as natural fibers into a lighter construction, corrosion resistance, and
strength can be designed in accordance with the direction of loading. In this
study, the authors make the specimen using coco fiber as a reinforcement of
composite and polypropylene as a matrix with the holding time and temperature
variations in the injection molding process. The purpose of this study to
determine the tensile strength and bending as well as shape analysis and
mikroskipis macroscopic fracture that occurs in the specimen by using a camera
and microscope test equipment. Variations holding time is 7 seconds, 8 seconds,
9 seconds. Barrel temperature on the injection molding machine used is 180ºC,
190ºC, 200ºC and injection pressure of 7 bar. Of tensile and bending test
results it can be concluded that there are significant variations of holding
time and temperature on the mechanical properties of the composite strength
values were generated. In the holding time and temperature variations,
occurring on average values of tensile strength and bending at the highest
temperature holding time is 9 seconds 190ºC is 11.42831 N/mm2. and a
temperature holding time 8 seconds 180ºC ie 10,584 MPa.
Penulis: Nurdin Akbar A, Yuni
Hermawan
Kode Jurnal: jptmesindd140520
