Process rubber by chemical means, usually in combination with heat, to improve its strength, hardness, elasticity, and to effect bonding to other rubber compounds. Used in the manufacture, repair, and retreading of tires.
Vulcanize Definition from Encyclopedia Dictionaries & Glossaries
Vulcanization or vulcanisation is a chemical process for converting natural rubber or related polymers into more durable materials via the addition of sulfur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links (bridges) between individual polymer chains. Vulcanized materials are less sticky and have superior mechanical properties. The term vulcanized fibre refers to cellulose that has been treated in a zinc chloride solution to cross-link the cellulose fibers.