Is polyurethane sealant toxic?

Is it harmful to the human body? Nuowan glue network editorial for you to answer. Polyurethane is a polymer made of polyisocyanate and polyether polyol or polyester polyol or / and small molecule polyol, polyamines or water and other chain expanders or crosslinking agents and other raw materials. By changing the type and composition of raw materials, it is possible to drastically change the form of the product and its properties, obtaining end products ranging from soft to hard. Polyurethane products in the form of soft, semi-rigid and rigid foam, elastomers, paints and coatings, adhesives, sealants, synthetic leather coating resins, elastic fibers, etc., are widely used in automobile manufacturing, refrigerator manufacturing, transportation, civil engineering and construction, footwear, synthetic leather, fabrics, electromechanical, petroleum chemical industry, mining machinery, aviation, medical, agriculture and many other fields. It can be said that polyurethane is harmless at room temperature and pressure, but its synthetic monomer is toxic, and volatilization at high temperature produces toxic gases. It has strong irritating effect and tearing effect on human respiratory tract, eyes and mucous membrane and skin. Heavy check caused chemical pneumonia, pulmonary edema. There is a sensitizing effect. Remember to place the polyurethane sealant in a place where children can not reach, do not store in a high temperature environment.