What Is Polyurethane?

Scientifically Polyurethane (PU or PUR for short) is a range of chemicals sharing similar chemistry. It is a polymer composed of units of organic chains joined by urethane or carbamate links.

Chemistries within the polyurethane range are Polyols, Polycarbonate Doils and Polyethers which are cured with an isocyanate. All of which impart different properties – which chemistry is chosen is dependant on the application. Some chemistries can have high specific adhesion, others flexibility.

How can Polyurethane be used?

Polyurethane sealants are widely used in building/construction, automotive, marine, and general industries. A common application would include seam sealing, gap filling, panel bonding, window bonding/backfilling glass, product assembly, structural bonding and insulating foams.

Polyurethanes are high-performance sealants noted for their elasticity and excellent abrasion resistance. They are highly resilient, non-sagging, and water-tight with excellent adhesion to most construction materials.

So, is Polyurethane right for me?

To help you decide whether the use of Polyurethane is right for you, we have listed some key characteristics below so that you can make an educated, informed decision.

Stress recovery – Good

UV Resistance – Good

Heat Resistance – Fair

Low Temperature Extrusion – Poor

Tear Resistance – Good

Paint-ability – Good

Availability In Colours – Good

Non-bubbling – Poor

Adhesion Spectrum – Fair

Staining – Good

Environmental Friendliness – Poor

There’s a lot to consider when thinking of the solution that best fits your needs. If you want some non-biased advice, feel free to get in contact with a member of our team.