Basic characteristics of natural rubber

1 unsaturated rubber, natural rubber, easily and curing agent for vulcanization, reacts with oxygen, ozone oxidation, cracking and aging poorly. Chlorination, bromination with the halogen, in the presence of acid catalysts or Cyclization reaction occurs. 2, with excellent physical and mechanical properties of natural rubber, has a high degree of flexibility. 3 rubber, natural rubber has good elastic at room temperature, but as the heat will gradually soften, plasticity is getting better when its temperature gradually decreases, you will gradually become hard, when the temperature is below 0 c the elasticity is greatly reduced. When the temperature is below -70~-73 below, it became as brittle as glass. Rubber heat soft, cold hardening phenomena are reversible, that is, with thermoplastic.