Pengaruh Tipe Batikan Ban Terhadap Koefisien Grip Ban Pada Lintasan Jalan Beton

Abstract

Tires are an important part of vehicle. It works by utilizing frictional forces between the tire surface and the road surface which is often called a grip. Many factors affect coefficient of grip, quality of compound and pattern of tire is two of them. This study aims to determine how much influence black carbon, sulfur and the pattern to the coefficient of grip whether in dry and wet track. The materials are used to make the compound is natural rubber (RSS) and synthetic rubber mixed with chemicals carbon black, white oil, ZnO, stearic acid, paraffin wax, MBTS, coumarone resin and sulfur. These are mixed using two roll mixing up blended and sheet forming compound. To determine the length of the ripening process is done by rheometer rubber. The next process of vulcanization of rubber using mold press with a temperature of 130 0 2)

C. Pattern of the mold had been formed to be 3 types; circle, curve and cross. Then, tensile strength and Shore A hardness are tested on specimen of the rubber. Additionally, grip test is conducted on load 16.2 kilogram in 30 minutes. Based on the tests performed, the addition of black carbon and sulfur influence on the coefficient of grip, compound tensile strength values, and wear rate of the tire compound. For the coefficient of grip on compound 1 with black carbon and sulfur composition of 50/3 phr had the highest grip coefficient of 0.716, while the compound 3 with a composition of black carbon and sulfur phr 60/4 has the lowest coefficient is 0.696 grip on the concrete track dry conditions and loading of 16.2 kg. Additionally, it is recommended that cross pattern had been chosen to design of tire. It achieves highest coefficient of grip and lowest wear rate in different compound.