What Is IIR Rubber?
Butyl and Halobutyl Rubber
Characteristic
- Copolymer of isobutylene with isoprene
- Chlorinated and brominated butyl have greater crosslinking flexibility and compatibility with other elastomers like NR and SBR
- As with other elastomers the different grades available differ by molecular weight (Mooney Viscosity)
- The chemical inertness of butyl allows high temperature mixing to alter the properties of the Heat treatment gives more flexible vulcasnizates
what is IIR Rubber Typically used For
- Tire Curing bladder
- Tire innerliner
- Tire sidewall
- Sporting balls bladder
- Gas masks and chemical agent protection
- Pharmaceutical stoppers
- Chewing gum
- Bridge bearing pads
- Conveyor belt
- Engine mounts
- Hoses
- Sealant tapes
- Seals
- Tank linin
What are the KEY Properties of IIR
- Excellent impermeability to gas
- Good flex properties – high damping behavior
- Great ozone resistance and weathering resistance
- Moisture resistance
- Chemical resistance
- Halogenated Butyl shows superior impermeability to air, gases, vibration damping and aging resistance
Rubber Application Matrix
HEXPOL’s rubber compounds can be used in a variety of different applications. Download our Application Matrix to see which compounds can fit your application.
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