PIB (polyisobutylene) is a synthetic rubber polymer characterized by high flexibility and low permeability to gases and moisture. It is widely used in tire innerliners, adhesives, sealants, and vibration damping applications where its combination of elasticity, thermal stability, and barrier properties provide significant advantages over competing elastomers. Engineers select PIB primarily for applications requiring excellent impermeability, dimensional stability across temperature ranges, and resistance to aging in outdoor environments.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 150.6 | - | — | ||
Flexural Strength (MOR)(σf) | 77.50 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 20.59 | MPa | — | ||
Young's Modulus(E) | 1.093 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 211.9 | K | — | ||
Melting Point / Solidus(Tm) | 356.4 | K | — | ||
Maximum Service Temperature(Tmax) | 639.9 | K | — | ||
Thermal Conductivity(k) | 0.1300 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.000 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.505 | - | — |