Nitrile Butadiene Rubber (NBR)
Nitrile butadiene rubber is a synthetic
rubber produced by the polymerization of acrylonitrile with butadiene. Nitrile
butadiene rubbers are also called NBR, acrylonitrile-butadiene rubber,
acrylonitrile rubber, nitrile synthetic rubber, and NR. This type of synthetic
rubber is widely used in many applications. In fact, most of the industrial
nitrile rubber manufacturing units are looking for multiple synthetic rubbers.
Nitrile butadiene rubber is a synthetic
rubber copolymer of NBR acrylonitrile and butadiene. The chemical name of
nitrile synthetic rubber is an acrylonitrile-butadiene copolymer. It is one of the
most important types of synthetic rubber with high resistance to aliphatic
hydrocarbon oils and fuels.
Different grades of Nitrile Rubber are available
with manufacturers and suppliers. The higher the acrylonitrile content in the
nitrile rubber grade, the higher the oil resistance, but then the lower
temperature elasticity becomes poorer.
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| Nitrile Butadiene Rubber (NBR) |
Properties of Nitrile Butadiene Rubber (NBR)
Nitrile rubber has high elasticity and high
wear resistance. However, it has only moderate strength with limited heat
resistance and poor resistance to essential oils. Nitrile rubber can typically
be used up to about -30C, but special NBR grades can work even at low
temperatures.
Nitrile rubber belongs to the family of
unsatisfactory copolymers of acrylonitrile and butadiene.
The physical and chemical properties of
nitrile rubber depends on the polymer synthesis of acrylonitrile.
Different grades are available for this
rubber. The higher the acrylonitrile content inside the polymer, the higher the
oil resistance.
It is generally resistant to fuels and
other chemicals.
It can withstand a certain temperature
range.
It has less strength and flexibility than
natural rubber.
Nitrile rubber is also resistant to
aliphatic hydrocarbons.
It is less resistant to ozone, aromatic
hydrocarbons, ketones, esters, and aldehydes.
It has high flexibility and high wear
resistance but only moderate strength.
It has limited weather resistance.
Normally it can be used up to about -30
degrees Celsius, but special temperatures can also work at low temperatures.
Applications of Nitrile Butadiene Rubber (NBR)
NBR or nitrile synthetic rubber is
considered a workhorse for the rubber products of automotive and other
industrial units. By choosing an elastomer with the appropriate acrylonitrile
material in balance with other properties, industrial nitrile rubber (NBR) is
used in a variety of application areas that require oil, fuel and chemical
resistance. In the automotive area, NBR is used in water handling applications
and in fuel and oil handling hoses, seals and grommets. With temperatures from
-40 to +125 degrees Celsius, NBR material can withstand all automotive
applications. Due to its flexibility, this form of synthetic rubber is the best
material for disposable lab, cleaning, and inspection gloves.
Uses of Nitrile Butadiene Rubber (NBR)
Roll cover
Hydraulic hoses
Conveyor belting
Graphic arts
Oil field packer
Seals for all types of plumbing and appliance applications
Injection or molded product transfer
Extruded hose or tubing
Calendered sheet material (floor mats and industrial belting)
Different articles of sponge
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