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2. List of polyurethane applications - Wikipedia

   en.wikipedia.org/wiki/List_of_polyurethane...

   Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

3. Construction adhesive - Wikipedia

   en.wikipedia.org/wiki/Construction_adhesive

   Construction adhesive being used to attach an access panel to drywall. The construction adhesive is in a caulking gun at the top of the image. Construction adhesive is a general-purpose adhesive used for attaching drywall , tile , molding , and fixtures to walls, ceilings, and floors. [ 1 ]

4. Adhesive - Wikipedia

   en.wikipedia.org/wiki/Adhesive

   The quality of adhesive bonding depends strongly on the ability of the adhesive to efficiently cover (wet) the substrate area. This happens when the surface energy of the substrate is greater than the surface energy of the adhesive. However, high-strength adhesives have high surface energy.

5. Hot-melt adhesive - Wikipedia

   en.wikipedia.org/wiki/Hot-melt_adhesive

   The high-MW ones require sophisticated extruders and are used as high-performance structural adhesives. The presence of hydrogen bonds between the polymer chains gives polyamides a high strength at even low molecular weights, in comparison with other polymers. Hydrogen bonds also provide retention of most of the adhesive strength up almost to ...

6. Methylene diphenyl diisocyanate - Wikipedia

   en.wikipedia.org/wiki/Methylene_diphenyl...

   These rigid polyurethane foams are ... 4,4′-MDI is also used as an industrial strength adhesive, which is available to end consumers as various high-strength ...

7. Polyurethane - Wikipedia

   en.wikipedia.org/wiki/Polyurethane

   High-performance, flexible polyurethane elastomers are also used in this way. Epoxy, metal-filled epoxy, and metal-coated epoxy is used for tooling that has an EOL in the tens of thousands of parts. It is typically used for molding flexible foam cushions and seating, integral skin and microcellular foam padding, and shallow-draft RIM bezels and ...