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Abstract In this research study. Thermal properties of composite materials with a coconut shell fibers, fibers, rubber, corn in the water casting the shell. Coconut shell fibers by fiber shell with corn factors study is an appropriate ratio of composite fibre shell, coconut shell, corn fiber in water with a rubber cast forms. With either a flame retardant araek The study of composite materials and flammable properties of heat of composite materials. From the test results, it was found that the ratio is 1:1: 2:1, 10, 10, 1:2: 10 with coconut shell fibers with fiber shell, corn boiled with each pattern applies to the substance, sodium hydroxide, water, timber and mixed with each cast Boris raek stripes. At a concentration of 10 percent and insulation sheet forming based on the ratio of 1:1: 2:1, 10, 10, 1:2: 10 will be the sheet of insulation with density variations correspond to the thermal properties, but the inverse variable with flammable ratio of insulation at the ratio 1:1: 10, the density is 0.000551, the smallest rate of fire-resistant (tested according to ASTM D 635-98) to bring the heat (tested according to ASTM C 177-97) when comparing the three test-pieces, it was found that the ratio has the ability to take the most heat is a ratio of 2:1: 10.
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