Elastomers/TPEs
Gas Impermeable Isobutylene Isoprene Rubber — Isobutylene Isoprene Rubber (Butyl Rubber)
Butyl rubber is known for its outstanding impermeability to gases, making it ideal for inner tubes and seals. It also exhibits good vibration damping and resistance to chemical attack.
IIRButyl Rubber
Manufacturers
3
Grades
3
Applications
5
Equivalents
0
Physical Properties
- Density
- 0.92 - 0.94 g/cm³
- Water Absorption (24h)
- 0.1 %
- Transparency
- Opaque
- Shrinkage
- 2.0 - 3.0 %
Mechanical Properties
- Young's Modulus
- 0.01 - 0.05 GPa
- Tensile Strength
- 5 - 20 MPa
- Elongation at Break
- 300 - 700 %
- Impact Strength (Izod)
- N/A
Thermal Properties
- Glass Transition Temperature
- -60 to -70 °C
- Melting Point
- N/A
- Continuous Service Temperature
- -50 to 120 °C
- Heat Deflection Temperature
- N/A
Electrical Properties
- Dielectric Constant
- 2.5 - 3.0
- Volume Resistivity
- 10^13 - 10^14 Ohm-cm
- Dielectric Strength
- 20 - 30 kV/mm
Chemical Resistance
- Acids
- Good
- Bases
- Good
- Solvents
- Good resistance to polar solvents, water, steam; Poor resistance to hydrocarbons
- UV Resistance
- Excellent
Sustainability
- Recyclability
- Limited
- Recycling Code
- N/A
- Carbon Footprint
- Moderate
Manufacturing compatibility
Cationic PolymerizationMoldingExtrusion
Applications
Inner tubes
Seals
Vibration dampers
Pharmaceutical stoppers
Adhesives
Available grades
Butyl 100Butyl 200Butyl 300
Manufacturers
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