Recently, people often leave messages asking, is spraying polyurethane foam toxic? Is it harmful to the body?
Some friends may have heard or watched related videos from Tiktok or other places, but they don't know much about it. When they see the spray master fully armed, they often ask, is it toxic? If it is not toxic, why is it covered so tightly? Here I will give you a detailed introduction!
At the construction site of polyurethane spray foaming, polyurethane foaming is made of isocyanate and polyether as the main raw materials. Through high-pressure polyurethane spraying equipment, under the action of various additives such as foaming agent, flame retardant, catalyst, etc., the two liquids collide and rotate violently at high speed in a small mixing chamber, fully mixed, and form fine mist droplets at the nozzle of the spray gun, which are evenly sprayed onto the surface of the object and formed by on-site foaming. A polymer. It is generally used in cold storage, roof exterior wall insulation, color steel tile ceiling, containers, pipelines, storage tanks, plates and other fields.
Qualified polyurethane foam made of blend polyether polyol is non-toxic after molding. Its volatile smell is mainly ammonia, which disappears after 24 hours. Formaldehyde and other harmful substances are also absent, and there will be no reaction if it comes into direct contact with the skin. Although polyurethane foam is non-toxic after molding, it will cause respiratory allergic reactions and lung damage if inhaled. Therefore, friends who have been engaged in on-site foaming for a long time must take good protection.