Rubber additives and modifiers

Fillers can comprise half of the volume of the rubber
- Silica and carbon black.
- Reduce cost of material.
- Increase tensile strengh and modulus.
- Improve abrasion resistance.
- Improve tear esistance.
- Improve resistance to light and weathering.
- Example,

Tires produced from latex contains 30% carbon black which improves the body and abrasion resistance in tires.

Additives

- Antioxidant, antiozonants, oil extender to reduce cost and soften rubber, fillers, reinforcement