We supply the following Rubber Compounds:
- Natural Rubber (NR)
- Styrene-Butadiene Copolymer (SBR)
- Polybutadiene (BR)
- Iso-butylene-Isoprene Copolymer (IIR, CIIR, BIIR)
- Ethylene-Pr-opylene-Diene-Monomer (EPDM)
- Polychloroprene (CR)
- Acrylonitrile-Butadiene Copolymer (NBR, HNBR)
- Chlorosulfonated Polyethylene (CSM)
- Fluoroelastomer (FKM)
- Polyacrylate rubber (ACM)
- Epi-chlorohydrin rubber (ECO)
- Silicone rubber (VMQ)
Key Properties of IIR
1. Air/Gas Impermeability:
- Lowest gas permeability among rubbers, ideal for tire inner liners and seals.
2. Chemical Resistance:
- Excellent resistance to polar solvents (e.g., alcohols, ketones), acids, and alkalis.
- Poor resistance to hydrocarbon oils and fuels.
3. Damping Properties:
- High energy absorption for vibration control (e.g., engine mounts).
4. Temperature Range:
- -50°C to 150°C (short-term); halogenated IIR (e.g., chlorobutyl) extends heat resistance.
5. Ozone/Weather Resistance:
- Inherently resistant to ozone, UV, and oxidation.
6. Electrical Insulation:
- Low conductivity, suitable for cable coatings.
Cure Systems:
- Sulfur-Cured IIR: Standard for general applications.
- Resin-Cured IIR: Faster curing for high-volume production.
Industry Applications
1. Automotive:
- Tire inner liners: Prevents air loss in tubeless tires.
- Vibration dampers: Engine mounts and bushings.
2. Pharmaceutical:
- Stoppers and septa (halogenated IIR): Resists drug permeation and sterilization.
3. Construction:
- Roofing membranes: Weatherproofing and UV resistance.
4. Industrial:
- Chemical tank linings, gaskets: Resists acids and polar solvents.
5. Consumer Goods:
- Sporting goods: Basketball bladders, inflatable seals.
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