Abstract

• Scrap tyre and waste leather products are major environmental problem for disposal. To overcome this problem, it is needed to reuse into another purpose. Therefore in this research, waste tyre and waste leather were used as filler in rubber compounding which also reduced the cost of production. Waste tyre and waste chrome tanning leather sample (neutralized with ammonia) were collected from tyre shop and leather mill. In this research 6 types of rubber composites RLC I – VI were made by using different amounts of waste tyre and fixed amount of waste leather. All these composites were investigated their physicochemical and physicomechanical properties. In the series of RLC I – VI, RLC VI (100 phr of NR, 100 phr of waste chrome leather neutralized with NH3 and 600 phr of waste tyre) had the highest tensile strength 6.63MPa, elongation at break 232 %, tear strength 62.0 N/mm and 100 % modulus 6.63 %. RLC VI was more resist to strain and stress. Among the prepared flooring RLC VI was selected due to its highest 100% modulus which resists the pressure and the neutralizing agent (NH3) used in leather waste did not cause adverse effect on environment. The comparison of surface morphology and thermal resistance of RLC VI and commercial flooring was performed. The surface of RLC VI was smoother than that of commercial flooring. Thermal resistances of both were nearly the same. Weight loss of RLC VI was 65.86 % and commercial was 71.896 %. The cost of prepared flooring was 2710 kyats per 47 sheet while the commercial was 7500 kyats per sheet. Therefore this prepared rubber composite flooring can be substituted in commercial flooring.