FABRICATION AND MECHANICAL PROPERTIES OF NATURAL FIBRE COMPOSITE OF RUBBER SEEDS (HEVEA BRASILIENSIS)
Abstract
Rubber is one of the most abundant natural resources in Indonesia. Indonesia is the country with the second-largest rubber production in the world. Based on data from the Ministry of Agriculture, the area of national rubber plantations reaches an area of 3.67 Ha. Rubber seed has a shell that has not been utilized optimally; it is only burnt and not utilized. Utilizing the seed shell material rubber as a reinforcing material is expected to increase efficiency and economic value. This research was carried out by doing variations in the volume filler fraction with a polyester matrix of 20%, 30%, and 40% with the hand lay-up method. The variations applied were tested using tensile, bending and water absorption. The highest tensile strength results is obtained at a variation of 20% with a value of 15.38 MPa. The highest bending strength is obtained on the variation of 20% with a value of 181.15 MPa. The optimum water absorption value is obtained at a variation of 20% with a value of 0.53%.
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