Rubber Material-IIR
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What is IIR?
“IIR” stands for Isobutylene Isoprene Rubber, which is a synthetic rubber compound commonly known by its trade name “Butyl rubber.” It is a copolymer of isobutylene and isoprene, and it possesses unique properties that make it suitable for a range of applications. Butyl rubber is known for its excellent air and gas impermeability, good weather resistance, and low gas and moisture permeability.
IIR Information
Process: Injection Molding, Compression Molding
Colors: Custom Colors
Tolerance: ±0.5mm
Price: Cost-effective
Application: automotive (tire inner liners, hoses), pharmaceuticals (stoppers), construction (sealants), and more.
Recommended Wall Thickness: 1mm-10mm or even thicker
IIR Properties
IIR is known for its air tightness and is often used in air sealing. It can have good heat resistance, oxygen resistance, ozone resistance, and sunlight resistance. In addition, it offers excellent resistance to bases, acids, and oxygenated solvents. It has a high energy absorption capacity and can be a good electrical insulator.
| Property | Value |
|---|---|
| Density (g/cm³) | 0.9-1 |
| Hardness (Shore A) | 30- 90 |
| Tensile Strength (MPa) | Good |
| Elongation at Break (%) | Excellent |
| Tear Strength (N/mm) | Good |
| Abrasion Resistance | Good |
| Flexibility | Good |
| Temperature Range (°C) | -40 to 120 |
| Electrical Insulation | Good |
| Chemical Resistance | Good |
| Solvent Resistance | Good |
| Oil Resistance | Excellent |
| Adhesion to Metals | Good |
| Compression Set | Good |
| UV and Weather Resistance | Good |
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