What materials are used in tyres?

Materials used in rubber compounds, such as NR, synthetic rubber, filler and rubber chemicals, make up almost 80% of a tyre. Typical types of synthetic rubber include styrene butadiene rubber (SBR), butadiene rubber (BR), butyl rubber (IIR), and synthetic polyisoprene (IR).

What is Nr tyre?

Quality standards for NR as a raw material The tyre industry mostly utilizes two types of natural rubber (NR): ribbed smoke sheet (RSS) and technically specified rubber (TSR).

What is microscopic tyre design?

Since NR represents the majority of polymer components in OTR tyres, microscopic design for these tyres aims to optimize the combinations of NR, fillers and rubber chemicals so that the material matches with the predicted inputs (stress, strain and heat) that are specific to the tyre parts and market conditions derived from macroscopic design.

What tyres can be used in extreme conditions?

From these perspectives, we discuss some examples of tyre applications in extreme conditions, such as off-the-road tyres that can support more than 100 t per tyre and airliner tyres that can perform at speeds as fast as 380 km/hr. Finally, we discuss standards of natural rubber and the future technical prospects for natural rubber.

Why is natural rubber important for tyres?

Natural rubber is not only the principal raw material used in manufacturing most tyres, it is also crucial in helping to meet tyre safety, performance and ecological requirements.

Why is Nr important for aircraft tyres?

Deviations in the amount of naturally occurring fatty acids in NR can cause deviations in the nature of the cure of the rubber compound, which may affect deviations in durability. As a principal raw material for OTR tyres, it is desirable for NR to be free from foreign materials and inappropriate amounts of fatty acid. 12.5.3. Aircraft tyres