Polyether block amide
This article relies largely or entirely on a single source. (July 2020) |
Polyether block amide or PEBA is a
). The general chemical structure is:PEBA is a high performance thermoplastic elastomer. It is used to replace common elastomers – thermoplastic polyurethanes, polyester elastomers, and silicones - for these characteristics: lower density among TPE, superior mechanical and dynamic properties (flexibility,
Applications
PEBA is found in the
PEBA is used in medical products such as catheters for its flexibility, its good mechanical properties at low and high temperatures, and its softness.
It is also widely used in the manufacture of electric and electronic goods such as cables and wire coatings, electronic device casings, components, etc.
PEBA can be used to make
Some
Physical properties
Properties | Unit | Value |
---|---|---|
Melting Point | °C | 134–174 |
Density | g/cm3 | 1.00 - 1.03 |
Water absorption at equilibrium (23 °C, 50% RH) | % | 0.4–0.7 |
Water absorption at saturation (23 °C, 24H in water) | % | 0.9–1.2 |
Shore Hardness | Shore D | 25–72 |
Flexural modulus | MPa | 12–513 |
Tensile strength at break | MPa | 32-56 |
Elongation at break | % | 300–750 |
Impact resistance (Charpy, notched) | kJ/m2 | No break |
Abrasion resistance (10 N/40 m) | mm3 | 55–130 |
Surface resistivity | Ω/sq | 109–1013 |
Volume resistivity | Ω·cm | 109–1013 |
References
Eustache, R.-P. (2005). "Poly(Ether –b-Amide) TPE: Structure, Properties and Applications". In Fakirov, Stoyko (ed.). Handbook of Condensation Thermoplastic Elastomers. Wiley. .