Garlic Additive on the Properties of Natural Rubber Vulcanite

Abstract

The effects of garlic additive and part replacement of sulphur in the conventional curative systems (mercapto benzothiazole-sulphur) MBT/S, (cyclohexyl benzothiazole sulphenamide-sulphur) CBS/S, and semiEV on the mechanical and cure properties of natural rubber compound have been studied. Results show that the addition of garlic powder at content less than or equal to 6pphr to the conventional MBT/S mix improves the tensile strength of natural rubber compound. Part replacement of sulphur with garlic powder in the conventional MBT/S system up to 2ppr also enhances the tensile strength of the compound of natural rubber. MBT/S systems in which sulphur has been replaced with garlic up to a level of 1.5pphr show comparable reversion resistance, cure rate index and scorch resistance to the conventional MBT/S systems containing less or equal to 6ppr garlic Addition of 2pphr powder to semiEV system improves tensile strength, while tensile strength depresses on the addition of 2pphr garlic powder to the CBS/S system. It appears advantageous therefore to include garlic powder in the corresponding formulation of natural rubber compound.