Umsesane wokutywina we-polyurethane ubonakaliswa ngokumelana nokunxiba, i-oyile, i-asidi kunye ne-alkali, i-ozone, ukuguga, ubushushu obuphantsi, ukukrazula, impembelelo, njl njl. Ukongeza, umsesane wokutywina uyaxhathisa ioyile, i-hydrolysi ...
Funda ngokugqithisileyo