Q. What is natural rubber and synthetic rubber?
Natural rubber is the rubber produced from the rubber
tree (Hevea brasillinsis). When the tree matures, the latex from the tree is
collected from a diagonal incision in the tree trunk. The tapping process
does not destroy the tree and the tree wound later heal itself. Synthetic
rubber is man made rubber produced from petrochemicals and other compounds.
Crude oil is the principal raw material for producing synthetic rubber.
Q. What is latex?
Latex is the protective fluid extracted from rubber
tree. It is contained in tissue beneath the bark of the rubber tree, Hevea
brasiliensis. Latex is cloudy white liquid and looks similar to cows milk.
Q. How is latex collected?
Latex is collected by cutting a thin strip of bark from
the rubber tree and allowing the latex to exude into a collecting vessel
over a few period of hours.
Q. What Is EPDM Rubber ?
EPDM is a synthetic rubber polymer and is made from
ethylene and propylene monomers. This rubber was developed in the early
1960's and used to produce variety of products like radiator and steam
hoses, freezer gaskets, tires, roofing membranes and aircraft seals to name
only a few.
Q. What is silicone rubber?
Silicone rubber is a type of synthetic rubber made from
silicone. This type of rubber has high flexibility resilience and tensile
strength over a wide temperature range.
Q. Why is rubber used to produce industrial
Rubber has certain unique properties which makes it
suitable to produce rubber products which are widely used in various
industrial applications. Rubber is water repellent. It is resistant to
alkalies and weak acids. Rubber has elasticity, toughness, impermeability,
adhesiveness, and electrical resistance. These properties make rubber useful
as an adhesive, a coating composition, a fiber, a molding compound, as well
as an electrical insulator.
Q. How is synthetic rubber superior to natural
Synthetic rubber has the following advantages over
Q. What is sponge rubber?
- better aging and weathering
- more resistance to oil
- resistance to solvents, oxygen, ozone, and certain chemicals
- resilience over a wider temperature range
Sponge rubber is a kind of soft, porous rubber which is
used in making toys, cushions, gaskets, and weather stripping and as a
vibration dampener. It is prepared by adding to ordinary rubber a powder
that forms a gas during the process of vulcanization.
Q. Can Natural Rubber be used for manufacturing
rubber products which may contact human body?
Yes. Rubber products made from latex of natural rubber
is used for medical treatment and examination and they are normally treated
in an additional process of the production line in order to reduce the
extractable protein content of the product. Rubber products made of solid
natural rubber usually contains very low level of extractable protein as
compared to the natural rubber latex products. This is because of the many
washing processes the latex has to go through before becoming solid (dry)
rubber. Therefore, rubber products made of solid (dry) natural rubber do not
normally cause any kind of allergy problem, particularly when contact to
human body is minimum.
Q. What is SBR?
Styrene-Butadiene Rubber (SBR) is a synthetic copolymer
composed of styrene and butadiene and is the most widely used type of
synthetic rubber. SBR has similar resistance to solvents and chemicals like
natural rubber, but can also be successfully bonded to a wide range of
materials. It is widely used in the manufacturing of tires.