My polyurethane cloth is disintegrating (presence of stains)

For many years, we have found that this issue randomly occurs in polyurethane products. This damage is mainly sustained in a wet environment : water system operating in closed or semi-open cycle (low new water renewal).

Standing water, temperature, confined and poorly ventilated spaces, flocculants and other factors are conducive to the hydrolysis phenomenon or the development of bacteria.

For example, researchers have shown that a type of fungus, called “Pestalotiopsis Microspora”, is a species of endophytic fungi that can break down and digest polyurethane in an anaerobic environment. Chinese researchers also recently detected a new type of fungus called “Aspergillus tubingensis”, which also destroys polyurethane. Our various discussions with specialists and laboratory technicians also go along these lines.

Restrictions on the use of certain chemicals containing mercury in the manufacture of polyurethanes has led to the production of polyurethane cloths or modular blocks that are more sensitive to the external environment.

Aware that these impairments are a significant issue for our customers, we work continuously with our raw material suppliers on this subject.

Today we can propose solutions whose results are still difficult to guarantee because the feedback we get varies. Do not hesitate to contact our teams for advice.