NBR

  • introduction:
    NBR (Nitrile-Butadiene Rubber) is a compound in which acrylonitrile (CH2=CH-CN) and butadiene (CH2=CH-CH=CH2) are copolymerized in various ratios and in different orders. The manufacturing of NBR and SBR is similar, Manufactured by emulsion polymerization, emulsifiers, polymerizers, etc. are also roughly the same system as SBR. Because NBR has good oil resistance and chemical resistance, it is widely used in industrial products, such as O-rings, compression, oil seals, etc.
  • Characteristics: The biggest characteristic of NBR lies in its oil resistance, which depends on its composition, molecular structure and polymerization conditions. Polarity. That is, the higher the acrylic content, the better the oil resistance of the NBR. In addition to the oil resistance, the amount of sunlight bound in the NBR also greatly affects the physical properties of the sulfur compound. Combined with the effect of the amount of sunlight on the physical properties
    Physical properties strength Oil resistance cold resistance Heat resistance Wear resistance hardness
    Acrylonitrile(-CN) more↑ Good ↑ Good ↑ Poor ↓ Good ↑ Good ↑ Good ↑
  • Classification:
    Commercially available NBR does not have certain classification rules. Various uses require different properties, processability, vulcanization speed, etc., so there are various grades on the market, and their copolymerization ratios are not disclosed, and some brands only label them. There is no uniform naming or classification method for the high or low sunny volume.
    Special NBR:

    1) NBR/PVC: Mix NBR and PVC in different ratios. This kind of NBR has better performance than general NBR.
    Chemical resistance and weather resistance
    2) Carboxyl NBR: Copolymerizing a small amount of acrylic acid or methacrylic acid with NBR, this kind of NBR has heat resistance, abrasion resistance,
    And excellent low temperature characteristics. The mixed Phenol resin also has wider compatibility than standard NBR, and tensile strength
    Strength and hardness are also high
    3) H-NBR: H-NBR (Hydrogenated NBR) is made by partially or fully hydrogenating NBR. Its has
    Excellent tensile strength, elasticity, high and low temperature resistance, aging resistance, chemical resistance, abrasion resistance
    And other physical characteristics.
  • Uses:
    The oil resistance of NBR can be used for compression, oil seals, gaskets, oil resistant hoses, printing rollers, industrial rollers, fuel tanks, adhesives, PVC plasticizers, etc.
  • Manufacturer:

    Trade Names

    brand name
    Taiwan NANCAR NBR 1052(33% ACN),NBR 1051(41% ACN)….
    Japan Nipol DN002(53% ACN),N21L(40.5% ACN),DN207(33.5% ACN),P70(30% PVC)….
    Japan JSR N215(48% ACN),N220(41% ACN), N211(32% ACN)…..
    Korea LG SEETEC NBR B6240(33% ACN), NBR B6850(33% ACN)….
    Korea Kumho KOSYN KNB35L(33% ACN), KNB35H(33% ACN)….
    German Bayer PERBUNA 3445(34% ACN),3945(39% ACN),3470(30% PVC)….
    Canada Polysar KRYNAC 34E50(33% ACN),5075(50% ACN),850(50% PVC)…

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