Resources

Polyurethane

Release time:2020-04-01
Jump to search
 
Polyurethane synthesis, wherein the urethane groups –NH–(C=O)–O– link the molecular units.
 
Polyurethane foam sponge

Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available.

Polyurethane polymers are traditionally and most commonly formed by reacting a di- or tri poly-isocyanate with a polyol. Both the isocyanates and polyols used to make polyurethanes contain, on average, two or more functional groups per molecule.

Polyurethanes are used in the manufacture of high-resilience foam seating, rigid foam insulation panels, microcellular foam seals and gaskets, durable elastomeric wheels and tires (such as roller coaster, escalator, shopping cart, elevator, and skateboard wheels), automotive suspension bushings, electrical potting compounds, high performance adhesives, surface coatings and surface sealants, synthetic fibers (e.g., Spandex), carpet underlay, hard-plastic parts (e.g., for electronic instruments), condoms,[1] and hoses. 


We Chat: Venus
We Chat: Venus
We Chat: Nicole
We Chat: Nicole
We Chat: Phil
We Chat: Phil

Get In Touch or Get A Quote

+86-755-29667661 Moble,What's app, Wechat: (+86) 18675501860 Rfq@idmould.com/Info@idmould.com