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
Famous quotes containing the word materials:
“If our entertainment culture seems debased and unsatisfying, the hope is that our children will create something of greater worth. But it is as if we expect them to create out of nothing, like God, for the encouragement of creativity is in the popular mind, opposed to instruction. There is little sense that creativity must grow out of tradition, even when it is critical of that tradition, and children are scarcely being given the materials on which their creativity could work”
—C. John Sommerville (20th century)
“Realism to be effective must be a matter of selection. ... genius chooses its materials with a view to their beauty and effectiveness; mere talent copies what it thinks is nature, only to find it has been deceived by the external grossness of things.”
—Julia Marlowe (1866–1950)
“The competent leader of men cares little for the niceties of other peoples’ characters: he cares much—everything—for the exterior uses to which they may be put.... These are men to be moved. How should he move them? He supplies the power; others simply the materials on which that power operates.”
—Woodrow Wilson (1856–1924)