Polyurethane is a chain molecule polymerized by polyether polyol and diisocyanate. Just as a chain is composed of small iron rings, polyurethane is equivalent to a long chain, and these two monomers are equivalent to an independent iron ring. If these two monomers are completely polymerized, then polyurethane itself is harmless.
The key point is that there will be a large number of these two monomers in inferior polyurethane that are not completely polymerized, and one of the sources harmful to human body is these two monomers. The following are the hazards of these two monomers to human body.
One of the residual impurities: polyether polyol
In fact, "polyether polyol" itself is not harmful, but it will be mixed with some impurities, such as formaldehyde and other aldehydes. The volatilization and attachment of these substances will stimulate our respiratory tract and skin, resulting in various uncomfortable feelings.
One of the remaining impurities: diisocyanate is harmful in itself.
"diisocyanate" can be said to be a highly toxic substance, which has a strong irritating smell and has a strong irritating effect on skin, eyes and respiratory tract.
After its vapor is inhaled, it will cause bronchitis, bronchopneumonia and pulmonary edema; Contact with skin can cause dermatitis, contact with eyes can cause severe irritation, and if left untreated, it may lead to permanent damage.
Especially for people who are allergic to diisocyanate, symptoms such as asthma, dyspnea and cough will appear after contact. In severe cases, it can cause eye redness and chemical burns, damage nasal mucosa and upper respiratory mucosa, and may even lead to chemical damage.
Studies have shown that diisocyanate is harmful to human hematopoietic function, and the platelets of some diisocyanate employees will decrease.
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