I-polyurethane yokuvala indandatho ibonakala ngokumelana nokugqoka, uwoyela, i-asidi ne-alkali, i-ozone, ukuguga, izinga lokushisa eliphansi, ukudabuka, umthelela, njll. Indandatho yokuvala i-polyurethane inomthwalo omkhulu wokusekela umthamo futhi isetshenziswa kabanzi emikhakheni ehlukahlukene. Ngaphezu kwalokho, indandatho yokuvala i-cast ayikwazi ukumelana nowoyela, i-hydrolysi...
Funda kabanzi