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Nitrile butadiene rubber has very strong polarity, and its compatibility with other polymers is generally not good, but it has good compatibility with chloroprene rubber, modified phenolic resin, PVC and other highly polar polymers, especially with chlorine containing polymers, and is often used in combination. In addition, in order to improve the processability and service performance, nitrile rubber is often used together with non-polar rubber such as natural rubber, styrene butadiene rubber and cis polybutadiene rubber. It should be pointed out that nitrile rubber is characterized by good oil resistance, and its use with other polymers (except PVC) tends to reduce oil resistance.

High performance hydrogenated nitrile rubber

With the development of the automobile industry, strict requirements have been put forward for the heat resistance, oil resistance and chemical corrosion resistance of the sealing materials used in automobile fuel and lubricating systems and engines, such as rubber. For a long time, the automobile industry has been using nitrile rubber with good oil resistance. Due to its own defects, it can only be used for a long time below 120 ℃; Moreover, due to poor ozone resistance, weather resistance and radiation resistance, it can not meet the sealing requirements of motor vehicles such as automobiles for engines. Hydrogenated nitrile rubber (HNBR) is the hydrogenation product of nitrile rubber. It not only has good oil resistance, ozone resistance, abrasion resistance and chemical corrosion resistance, but also has good compression permanent deformation, heat resistance and low temperature resistance, which can be used to manufacture sealing products used under harsh conditions.