Abstract
The aim of this research was to manufacture composite panel that can be used as wall panel for earthquake resistantly building. First stage on wall panel production was done by preparing polypropylene plastic waste, coconut coir fiber, and waste sludge paper mill. The second stage was carried out by mixing polypropylene plastic waste with coconut coir fiber and sludge of paper mill waste. In this research, two mixing variations were carried out. First variation was done by mixing polypropylene plastic waste and coconut fiber in a ratio of 60:40 without adding sludge, while the other was done by mixing sludge, polypropylene plastic waste and coconut fiber with a ratio of 60:20:20. The mixing process was done using extruder and the drying process was done using hot press. Density, internal adhesion values, and thickness extension of resulted composite panels then was characterized. From two variations resulted wall panels were found that the wall panels with sludge addition has better density value of 0.9713 g/cm3 compare to composite panel without sludge addition where its density value of 1.093 g/cm3. In addition, the internal adhesive strength value of the wall panels without sludge addition of 0.59 N/mm2, whereas it improved to 0.61 N/mm2 on panel with sludge addition. Moreover, the thickness of the panel that was produced without sludge addition was 0.508 percent, while panel with sludge addition decreased to 0.104 percent.
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