What is Thermoplastic Polyester Elastomer (TPE-E or TPEE)?

Thermoplastic polyester elastomer (TPE-E or TPEE), also known as thermoplastic Copolyester, are a class of multiblock copolymers or a physical mix of polymers (usually a plastic and a rubber) which consist of materials with both thermoplastic and elastomeric properties. Thermoplastic elastomers show both advantages typical of rubbery and plastic materials. The principal difference between thermoset elastomers and thermoplastic elastomers is the type of crosslinking bond in their structures. In fact, crosslinking is a critical structural factor which contributes to impart high elastic properties. The crosslink in thermoset polymers is a covalent bond created during the vulcanization process. On the other hand the crosslink in thermoplastic elastomer polymers is a weaker dipole or hydrogen bond or takes place in one of the phases of the material.

General features of TPEE:
Excellent fatigue resistance
Good resilience
Highest heat resistance
Tough, wear resistant
Good tensile strength
Oil/chemical resistant
High impact resistance
Good mechanical properties

TPEE Applications:
Compared with other TPEs, Thermoplastic polyester elastomers (TPEE) exhibits excellent anti-fatigue properties. They show high-temperature resistance up to 140℃ and excellent tear strength. Their features make them ideal for blow molding applications, such as extrusions and industrial tubes. With superior properties, TPEE usually cost high.
TPEE can be used on many kinds of automotive parts, hoses/hard tubes, all kinds of gears, bearings, sealing materials, pipes, cables, communication cables, compression springs, sporting films, golf ball surfaces, etc.