I-Polyurethane (izimbozo, izithiyo zokuvala, izinamathiseli)
Umswakama ohlelweni lwe-PU usabela ne-isocyanate, kungakhathaliseki ukuthi emikhiqizweni ye-polyurethane enengxenye eyodwa noma ezimbili, ekhiqiza i-amine ne-carbon dioxide, i-amine iyaqhubeka nokusabela ne-isocyanate, ukuze ukusetshenziswa kwayo ukukhipha igesi ye-carbon dioxide ngesikhathi esifanayo, kwakha amabhamuza ebusweni befilimu yopende, okuholela ekuwohlokeni noma ngisho nasekusebenzeni kokwehluleka kwefilimu yopende.
U-2% ~ 5% wesihlungo sama-molecule (impuphu) ohlelweni kwanele ukususa umswakama osele ohlelweni lwe-PU, kodwa ekugcineni kuncike kumswakama ohlelweni.
Ukugqoka okulwa nokugqwala
Ku-primer ecebile nge-zinc epoxy, inani elincane lamanzi lizokhiqiza ukusabela okuhle ne-zinc powder, likhiqize i-hydrogen, likhuphule ingcindezi emgqonyeni, lifinyeze impilo ye-primer, okuholela ekuqineni, ukumelana nokuguguleka kanye nobunzima befilimu yokumboza. Isihlungo sama-molecular (i-powder) njenge-desiccant yokumunca amanzi, okuyi-adsorption ebonakalayo ngokuphelele, izosusa amanzi futhi ngaphandle kokusabela ne-substrate. Ngakho-ke isihlungo sama-molecular siphephile futhi silungele uhlelo lokumboza olulwa nokubola.
Ukugqoka ngempuphu yensimbi
Ukusabela okufanayo kungenzeka ezimbozweni zempuphu yensimbi, njengasezimbozweni zempuphu ye-aluminium.
Imikhiqizo ehlobene:Isihluzo Se-Molecular Se-JZ-AZ