How do polyurethanes behave compared to hypothetical attacks of chemical, biological and ultraviolet radiation? Sd Stampi, a leading company in Modena in the field of polyurethane moulds, explains it to you.
Chemicals
Polyurethanes, in general, guarantee an interesting refractory reaction to solvents and chemical agents. I mean, they excellently resist hypothetical attacks.
Polyurethane foams are also not soluble in organic solvents. They can be attacked by substances such as alcohol or ketones, and in this case they generate a series of swellings, protrusions or sinkholes.
One of the advantages of polyurethane is that it can be combined with all metal roofs, since it is compatible with various types of organic adhesives.
Another precious peculiarity is the behaviour towards the materials used in the treatment of fiberglass, in particular in the internal machining of vans, tanks, etc..
Biological agents
What about molds? Polyurethane has an excellent resistance to biological substances. Polyurethanes are resistant to biological attack and therefore prevent the proliferation of fungi.
Light
The light and therefore the ultraviolet radiations favor the yellowing of the superficial layer of the product in polyurethane, causing the oxidation of the material.
It should be added, however, that the deterioration does not affect the internal state of the products that maintain their performance qualities, but only the layer directly exposed to light.