PENGARUH LAMA PERENDAMAN LARUTAN KOH TERHADAP KEKUATAN TARIK DAN KEKUATAN BENDING KOMPOSIT HIBRID SERAT RAMI DAN BAMBU

Abstract

The development of the era is increasing makes material technology develop more rapidly, especially in composite materials.Based on the facts in the community, fishing rods from fiber glass are still often used. So that a study was conducted on natural fibers, namely flax and bamboo fibers with long treatment of soaking KOH solution. In this research, it is hoped that hemp and bamboo fibers can be used to replace glass fiber materials. In this study using the type of experimental research. Fiber composites were carried out with variations in immersion time of 1, 2, 3 and 4 hours with 5% KOH concentration. Next, analyze the effect of KOH duration on the tensile and bending test results. Based on the results of the study, it can be concluded (1) The result of the greatest immersion time lies in the immersion time of 4 hours which has a tensile and bending strength of 36.56 Mpa and 91.14 Mpa. While the lowest tensile and bending strength values ​​were produced by 1 hour immersion which had 18.39 Mpa and 20.40 Mpa results. (2) The results of the fiber arrangement on the hybrid fiber of flax and random and woven bamboo lies in the woven bamboo pattern with a tensile strength of 36.56 Mpa and the highest bending strength is obtained with a random arrangement pattern of 91.14 Mpa. Then the results of the lowest tensile strength found in the random fiber arrangement pattern of 18.39 Mpa and the lowest bending strength was found in the woven arrangement pattern of 20.40 Mpa.