Why vulcanized rubber is used to make rubber tyres rather than natural rubber?

Vulcanized rubber is used to make rubber tyres instead of natural rubber because vulcanization improves the strength, elasticity, durability, and resistance to heat, chemicals, and abrasion, making tyres safer and longer lasting compared to using untreated natural rubber.

Key Benefits of Vulcanized Rubber for Tyres

• Vulcanized rubber creates cross-links between polymer chains during heating with sulfur, making the rubber tough and resilient.
• It can withstand higher temperatures and stress, crucial for vehicle tyres exposed to friction, heat, and varying weather conditions.
• Vulcanized rubber remains elastic and resists permanent deformation, ensuring performance over long distances and under heavy loads.

Problems with Natural Rubber in Tyres

• Natural rubber, without vulcanization, is soft, sticky, and easily deforms under pressure, losing shape and strength.
• It breaks down quickly when exposed to heat, sunlight, chemicals, or water, making it unreliable for tyre manufacturing.
• The mechanical properties of natural rubber are inadequate for modern tyres, which require high tensile strength, abrasion resistance, and durability.