Presentation
For a number of years now, we have been seeing the random appearance of this problem of attack on polyurethane products. These attacks mainly occur in a damp environment: water circuits operating in a closed or semi-open cycle (low renewal of new water).
Stagnant water, temperature, confined and poorly ventilated areas, flocculants and various other factors are conducive to hydrolysis or bacterial growth.
For example, researchers have shown that a fungus of the ‘Pestalotiopsis Microspora’ type is a species of endophytic fungus capable of decomposing and digesting polyurethane in an anaerobic environment. Chinese researchers have also recently discovered a new type of fungus, Aspergillus tubingensis, which also destroys polyurethane. Our various discussions with specialists and laboratory technicians also point in this direction.
Restrictions on the use of certain mercury-based chemicals in the manufacture of polyurethanes has led to polyurethane modular fabrics or paversbeing more sensitive to the external environment.
Aware that this degradation is a significant problem for our customers, we are constantly working with our raw materials suppliers on this issue.
Today, we can offer solutions whose results are still difficult to guarantee because feedback is variable. So don't hesitate to come back to our teams for advice.