Rubber (Rubber) refers to a highly elastic polymer material with reversible deformation, which is elastic at room temperature, can produce a large deformation under a small external force, and can be restored to its original state after removing the external force.

Rubber is divided into natural rubber and synthetic rubber two kinds. Natural rubber is extracted from rubber trees, rubber grass and other plants after processing made of gum; synthetic rubber is made of various monomers by polymerization reaction. Rubber products are widely used in all aspects of industry or life.