Is polyurethane a plastic?
Plastic is a very generalized term for polymers that can mean either a thermosetting or a thermoplastic Plastic. There is Polyethylene Terephthalate (PETE), Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), Polypropylene (PPE), Vinyl (V), Styrofoam (Polystyrene), on the thermoplastic side and bakelite on the thermosetting side. Polyurethane, however, is an elastomer.
What is the difference between a polyurethane PU coating and a thermoplastic polyurethane TPU coating?
Polyurethane (PUR and PU) is a polymer composed of a chain 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. Polyurethanes plastic commonly used in the manufacture of flexible, high-resilience foam seating; rigid foam insulation panels; microcellular foam seals and gasket - in.kompass.com/a/bottles-plastic-for-the-pharmaceutical-and-cosmetic-industry/2071009/
Spray polyurethane foam is a plastic spray that is installed as a liquid then expands many times its original size. It is used in a variety of uses including roofing, air barriers, and insulation of commercial and residential buildings. It is also used to insulate freezers, walk in coolers, and produce storage rooms. Polyurethane has also been used to increase the structural strength of wings in airplanes.
"Plastic" is a generic name for many different substances, which basically have two things in common: they are made artificially, and they are polymers. Therefore, properties such as the boiling point can be expected to vary widely. You can look up the properties by searching (for example) the Wikipedia, for individual types of plastic, such as as "PVC", "polyurethane", etc.
A polyurethane is any polymer consisting of a chain of organic units joined by urethane links. It is widely used in flexible and rigid foams, durable elastomers and high performance adhesives and sealants, fibers, seals, gaskets, condoms, carpet underlay, and hard plastic parts. Polyurethane products are often called "urethanes". They should not be confused with the specific substance urethane, also known as ethyl carbamate. Polyurethanes are not produced from ethyl carbamate, nor do they contain…