Penelitian pengaruh variasi bahan pelunak naphtenic oil terhadap sifat fisis tegangan putus dan perpanjangan putus kompon karet untuk alas sapi

The aim of this research is to know influence of plasticizer naphtenic oil to the physical properties of tensile strength and elongation at break of rubber compound for cowmats. It makes from Rubber Smoke Sheet (RSS) and Styrene Butadiene Rubber 1502 (SBR) as raw material with addition ingredients are Calcium Carbonate, FEF black, Stearic Acid, Zinc Oxide, Plasticizer Naphtenic Oil, Paraffine Wax, TMT, CBS, AOSP and Sulphur as Vulcanizing agent. Rubber compound for cowmats, formed to slab by hydraulic press at 1500C and 150 Kg/cm2. Than tested tensile strength and elongation at break. The result of this research indicated that platicizer naphtenic oil (x) and tensile strength have regression equation as Y1 = 24.168 ? 0.634 X (r = 0.87), while naphtenic oil and elongation at break have regression equation as Y2 = 236.32 + 21 X (r = 0.88).