What Does Thermoplastic Polyurethane (TPU) Mean?
Thermoplastic polyurethane (TPU) is a thermoplastic elastomer and is processed by extrusion, injection, blow and compression molding equipment. TPU is capable of providing many combinations of its physical properties, making it an adaptable and flexible material for many applications.
TPU is used as a liner in trenchless installation techniques where resistance to corrosion and abrasion is a requirement.
Trenchlesspedia Explains Thermoplastic Polyurethane (TPU)
TPU's are formed by the combination of a polyol, a short chain diol and a diisocyanate. They are of three chemical classes namely polyester, polyether and polycaprolactone.
Polyester Thermoplastic Polyurethane
Polyester TPU's are resistant to chemicals and oils and are resistant to abrasion.
Polyether Thermoplastic Polyurethane
Polyether TPU's have lower specific gravity than the other two and have better abrasion and tear resistance, are resistant to hydrolysis and microbial attacks, and have low-temperature flexibility, making it an excellent choice for liners of pipelines that need these properties.
Polycaprolactone Thermoplastic Polyurethane
Polycaprolactone TPU's are tough, resistant, have low-temperature performance and high resistance to hydrolysis, making it a preferred raw material for the manufacture of pneumatic and hydraulic seals.