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NBR (Nitrile)

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  • NBR (Nitrile)
    • Environmentally friendly, oil-resistant, low-cost for NBR Nitrile rubber
    What is the NBR Rubber ?

    Nitrile Butadiene Rubber (NBR) is a kind of synthetic rubber, which is copolymerized by Acrylonitrile and Butadiene.

    Chemical structure and synthesis

    Monomer: The main monomers of NBR are Acrylonitrile (-CH2-CH(CN)-) and Butadiene (-CH2-CH=CH-CH2-).

    Polymerization method: NBR is usually synthesized by emulsion polymerization, which is a method of dispersing monomers into tiny droplets and polymerizing them using an emulsifier in an aqueous medium.

    Acrylonitrile content: The content of acrylonitrile can vary between 18% and 50%, which determines the oil and chemical resistance of the rubber. The higher the content, the better the oil resistance, but the elasticity and cold resistance will be reduced.

    Our CBD Seals NBR Compounds information：

    Oil resistance: NBR has good resistance to oils, aliphatic hydrocarbons and certain chemical solvents due to its polar cyano group (-CN).

    Abrasion resistance: NBR has good abrasion resistance and is suitable for use in the manufacture of abrasion resistant parts.

    Heat resistance: NBR can be used in temperatures ranging from -50°C to 100°C, and some specially formulated NBR can even be used at higher temperatures.

    Mechanical properties: NBR has good tensile strength, tear strength and resistance to permanent deformation in compression.

    Aging resistance: The aging resistance of NBR can be improved by adding antioxidants and antioxidants.

    Processing and vulcanization

    Processing methods: NBR can be processed by extrusion, calendering, injection molding, molding and other traditional rubber processing methods.

    Vulcanization: Vulcanization of NBR usually uses sulfur or organic peroxide as vulcanizing agent, and accelerators are added to accelerate the vulcanization process. The vulcanized NBR has better physical and chemical properties.

    Areas of application

    Automobile industry: Used in the manufacture of fuel hose, brake hose, seals, O-rings, leather bowls, dust covers, etc.

    Industrial field: used in the manufacture of oil-resistant hoses, conveyor belts, sealing gaskets, rubber hoses, rubber linings, etc.

    Aerospace: Used to manufacture oil and high temperature resistant seals and parts.

    Medical field: used to manufacture disposable gloves, because NBR has good chemical resistance and anti-allergy.

    Sustainability

    Recycling: NBR can be recycled and reused to reduce the impact on the environment. Some advanced recycling technologies can transform waste NBR into new rubber products or other useful materials.

    NBR excels in a wide range of industrial applications with excellent oil and solvent resistance, abrasion resistance and mechanical strength, as well as good elasticity, sealing properties and cost-effectiveness.

    NBR excels in oil resistance, cost-effectiveness and some specific applications, while fluoroelastomers are superior in high-temperature resistance, chemical stability and aging resistance. The choice depends on specific application requirements.

    NBR excels in oil resistance, solvent resistance and mechanical strength, while silicone is superior in high temperature resistance, low temperature resistance and physiological inertness. The choice depends on the specific application requirements.