TPU Materials Tubes
May 10, 2017
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Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
Use:
TPU has many applications including automotive instrument panels, caster wheels, power tools, sporting goods, medical devices, drive belts, footwear, inflatable rafts, and a variety of extruded film, sheet and profile applications.TPU is also a popular material found in outer cases of mobile electronic devices, such as mobile phones. It is also used to make keyboard protectors for laptops.TPU is well known for its applications in performance films, wire and cable jacketing, hose and tube, in adhesive and textile coating applications and as an impact modifier of other polymers.. TPU pellets are used as Adidas' most recent cushioning technology, known as Boost. Several thousands of TPU pellets are bound together to create a comfortable sole for the shoe.
Properties of commercially available TPU include:
high abrasion resistance
low-temperature performance
high shear strength
high elasticity
transparency
oil and grease resistance
The currently available TPUs can be divided mainly in two groups, based on soft segment chemistry:
polyester-based TPUs (mainly derived from adipic acid esters)
polyether-based TPUs (mainly based on tetrahydrofuran (THF) ethers).
In other words, polyether-based TPU is used only in cases where excellent hydrolysis and microbial resistance is required, as well as in cases where extreme low temperature flexibility is important.
When stable light colour and non-yellowing performance are required, aliphatic TPU based on aliphatic isocyanates is used.
Recently, BASF has pioneered crosslinking during TPU production, made possible by adding liquid crosslinkers and using a masterbatch. Plant-based bio TPU has been developed for green thermoplastic elastomer applications by Merquinsa and GRECO, marketed as Pearlthane ECO and Isothane respectively.(Cited from Wikipedia)
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