Recycled rubber inner tubes are elastic rings designed to maintain tire pressure. Zinc oxide, used as an additive, can improve processing and enhance tube performance, including sealing and heat resistance. Below is a brief overview of its key roles.
1. Used as an activator/oxidizer
Zinc oxide commonly serves as an activator in rubber formulations, improving tear resistance and wear performance while complementing internal film properties in recycled rubber.
2. Used as an activator agent
Zinc oxide can work with acidic substances to promote vulcanization reactions, accelerating cure rates and improving vulcanization effectiveness, resulting in enhanced durability and tear resistance.
By adjusting zinc oxide addition appropriately during manufacture, companies can achieve better material properties and may reduce the need for other additives.