Nitrile Rubber Oil Resistant Rubber Strip

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Nitrile Rubber Oil Resistant Rubber Strip Custom Nitrile Rubber Strip
Product Description
Oil Resistant Rubber Strip,Nitrile Rubber Strip is a copolymer formed by polymerization of acrylonitrile and butadiene monomers. It is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance, and adhesion. The relay is strong. The disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity.
Nitrile rubber is mainly used to make oil-resistant rubber products. The acrylonitrile content (%) in nitrile rubber has five types: 42-46, 36-41, 31-35, 25-30, 18-24. The more acrylonitrile content, the better the oil resistance, but the cold resistance decreases accordingly. It can be used for a long time in the air at 120°C or in oil at 150°C. In addition, it also has good water resistance, air tightness and excellent bonding properties. Widely used in the manufacture of various oil-resistant rubber products, a variety of oil-resistant gaskets, gaskets, casings, flexible packaging, flexible hoses, printing and dyeing rubber rollers, cable rubber materials, etc., becoming indispensable in industries such as automobiles, aviation, petroleum, and copying The elastic material.
Performance of Nitrile Rubber Strip
NBR has excellent oil resistance. Butadiene monomers can be copolymerized into three different chain structures: cis, trans and 1,2-alkylene groups. In a typical NBR structure, the trans form accounts for about 78%. Because NBR contains cyano groups in its molecular chain structure, its oil resistance (such as mineral oil, liquid fuel, animal and vegetable oil and solvent resistance) is better than natural rubber, neoprene rubber and styrene butadiene rubber. Compared with other rubbers, NBR has a wider range of use temperature. Its long-term use temperature is 120oC. At the same time, NBR has good low temperature resistance, and the lowest glass transition temperature can reach -55oC.
NBR has good chemical resistance and good processing performance. With the content of propionitrile in its structure, its relative density increases, vulcanization speed increases, and tensile strength performance increases, but its resilience performance decreases and cold resistance deteriorates. Since the cyano group in NBR is easily polarized by the electric field, the dielectric performance is reduced, and it is a semiconducting rubber. NBR can be divided into five categories: ultra-high, high, medium-high, medium and low acrylonitrile according to the level of ACN content. There are two production methods: continuous and batch polymerization. The continuous polymerization method is usually used for small variety and large-volume production with low consumption. The batch polymerization method is suitable for multi-variety and small batch production. The number of polymerization tickets is small and the construction consumption is high. So far, there is no trend of mutual substitution.
Although nitrile rubber has excellent physical and mechanical properties and processing properties, it is not as good as fluorine-like rubber and acrylic rubber in long-term use in sour gasoline and high temperature (150oC) environments. For this reason, German companies, Canadian companies and Japanese companies Developed hydrogenated nitrile rubber (HNBR) with excellent performance. In addition, it has also developed extremely super cold resistance and high purity nitrile rubber and shuttle-based nitrile rubber (XNBR).
The Main Purpose
Because of its excellent oil resistance and physical and mechanical properties, NBR is widely used in the manufacture of various oil-resistant rubber products, such as O-rings, gaskets, hoses, fuel tank lining rubber, printing rollers, oil tank linings, insulating floor boards, oil resistance Shoe soles, hard rubber parts, fabric coatings, pipe thread protection layers, pump impeller