Materials
- Natural rubber, or polyisoprene is the basic elastomer used in tire making
- Styrene-butadiene co-polymer (SBR) is a synthetic rubber which is often substituted in part for natural rubber based on the comparative raw materials cost
- Polybutadiene is used in combination with other rubbers because of its low heat-buildup properties
- Halobutyl rubber is used for the tubeless inner liner compounds, because of its low air permeability. The halogen atoms provide a bond with the carcass compounds which are mainly natural rubber. Bromobutyl is superior to chlorobutyl, but is more expensive
- Carbon Black, forms a high percentage of the rubber compound. This gives reinforcement and abrasion resistance
- Silica, used together with carbon black in high performance tires, as a low heat build up reinforcement
- Sulphur crosslinks the rubber molecules in the vulcanization process
- Vulcanizing Accelerators are complex organic compounds that speed up the vulcanization
- Activators assist the vulcanization. The main one is zinc oxide
- Antioxidants and antiozonants prevent sidewall cracking due to the action of sunlight and ozone
- Textile fabric reinforces the carcass of the tire
Read more about this topic: Tire Manufacturing
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