2. Basic Properties of Rubber
As indicated above, rubber comes in several
variations, each of which has unique properties.
However, most—if not all—rubbers also share a few
common characteristics, such as:
•Durability: Most rubbers are highly durable, resisting damage
and degradation from abrasive and tearing forces, impact, low
temperatures, and water. They also exhibit a relatively slow heat
buildup rate.
•Elasticity: The molecular structure of rubber materials allows
them to return to their normal shape after being compressed or
stretched.
•Thermal contraction: While most materials expand when heated,
rubber contracts. This unusual phenomenon results from how the
rubber molecules respond to heat.
4. Neoprene Rubber
Neoprene rubber—also called
chloroprene—is one of the oldest
types of synthetic rubber.
Compared with natural rubber and
other synthetic rubbers, it exhibits
an exceptionally low susceptibility
to burning, corrosion, and
degradation.
5. 5
• Silicone Rubber
• Silicone rubber—also referred to
as polysiloxane—is known for its
malleability, biocompatibility, and
resistance to extreme
temperatures, fire, ozone, and
ultraviolet (UV) radiation. It is
available in both solid and liquid
forms in a variety of colors.
6. 6
• Nitrile Rubber
• Nitrile rubber—also known as
Buna-N rubber or
nitrile butadiene rubber
(NBR)—demonstrates several
desirable mechanical and
chemical properties, such as
resistance to compression
set, heat, oil and gas, and
wear.
