Pengaruh proses oil terhadap tegangan putus dan perpanjangan putus karet untuk komponen pompa air tangan

The objective of this research is to know influence of process oil to the physical properties tensile strength and elongation at break of rubber compound for hand water pump. Vulcanized rubber makes from Rubber Smoke Sheet (RSS) and Styrene Butadiene Rubber (SBR 1502) as raw material. Ingredient which added to raw material were Paraffin Wax, Strearic Acid, ZnO, CaCO3, Carbon Black, Process Oil, CBS, TMT, AOSP and Sulphur. Raw material rubber and ingredient were compounded in a two roll mill and formed to slab by hydraulic press at temperature 1500C and pressure 150 kg/cm2. It should be carry out by varying process oil 3 ? 9 part by weight raw material. The compound was tested tensile strength and elongation at break. The result of this research indicated that process oil (X1) and tensile strength (Y1) have regression equation as Y1 = 235,697 ? 8,33 X (correlation coeffisien = 0,72) while process oil and elongation at break has regression equation as Y2 = 251,64 + 12,75 X (correlation coeffisien = 0,97).