Material Selection for Natural rubber–Styrene butadine rubber Composite by Analytic Hierarchy Process

Natural Rubber (NR) has distinctive characteristics, namely, it possesses strength, reduces heat accumulation, and performs well at low temperatures, surpassing Styrene Butadiene Rubber (SBR). However, SBR has its own merits, such as resistance to cracking, wet road traction, and better weather resistance than NR. Consequently, in the automotive tire manufacturing industry, NR and SBR are commonly mixed in various ratios. Additionally, this blending aids in cost reduction during production. Thus, this research explores the mixing ratios between NR and SBR at 100/0, 75/25, 50/50, 25/75, and 0/100 using the Analytical Hierarchy Process (AHP) technique as a tool to manage values obtained from tests, including tensile strength, tear resistance, and 300% modulus. All these criteria are amalgamated into a single value to facilitate decision-making in selecting the most suitable ratios. It was found that 100/0 was the most preferable option, followed by 0/100, 75/25, 50/50, and 25/75.