NBR
This type of synthetic rubber is derived as result of copolymerization between Acrylonitrile and Butadiene.
The first reaction of acrylonitrile copolymerization was achieved during 1930’s. The production was started in 1934, in Germany.
By means of adjusting NBR percentage in the rubber, it is possible to prepare elastomers that may be used for various purposes.
For example, when the percentage of NBR in the rubber is increased, it provides more resistance against oils and dissolvers. Additionally, higher NBR percentage in the rubber increase the material’s abrasion rate to other polymers, and provides higher gas transmittance. The resistance against tearing also increases. When the NBR percentage decreases, the material’s resistance against low temperatures decreases but the elasticity increases.
Properties:
Good resistance against oils.
Good mechanical properties.
Does not leak gases.
Provides average resistance against aging.
Good adhesiveness to metal.
Performs on average in low temperatures however, in company with plasticizer, it is possible to use this material in applications whose temperatures reach up to -40 C°.
Areas of Usage:
This material is used in the production of gaskets, hoses of gasoline, oil, hydraulic hoses and conveyor belts.
Operating Temperatures:
Long term: -30 C° + 120 C°
Short term: -40 C° + 150 C°