HNBR: Hydrogenated acrylonitrile-butadiene rubber
- Short Name
- HNBR
- Name
- Hydrogenated acrylonitrile-butadiene rubber
- Group
- EM - Elastomers
- General Properties
- Chemical Formula
- Structural Formula
-
Properties
- Glass Transition Temperature
- -30 to -10 °C
- Melting Temperature
- - °C
- Melting Enthalpy
- - J/g
- Decomposition Temperature
- 465 to 480 °C
- Young's Modulus
- 15 to 25 MPa
- Coefficient of Linear Thermal Expansion
- 225 to 260 *10¯6/K
- Specific Heat Capacity
- - J/(g*K)
- Thermal Conductivity
- - W/(m*K)
- Density
- 0.95 to 1.00 g/cm³
- Morphology
- Amorphous rubber
- General properties
- Very good oil and gas resistance (like for NBR). High ozone resistance. Good abrasion resistance. Higher temperature, aging and weather resistance than NBR
- Processing
- Cross-linking by means of sulfur, peroxides or by radiation
- Applications
- Friction linings. Seals. Cables. Profiles
Internet Links
NETZSCH Measurements
- Instrument
- DSC 204 F1 Phoenix®
- Sample Mass
- 12.40 mg
- Isothermal Phase
- 8 min/3 min/8 min
- Heating/Colling Rates
- 10 K/min
- Crucible
- Al, pierced
- Atmosphere
- N2 (40 ml/min)
Evaluation
HNBR is an entirely amorphous elastomer with a glass transition (midpoint) of -23°C in both the 1st heating (blue) and 2nd heating (green) with a step height (Δcp) of 0.38 J/(g.K) each.