Polyurethane (dahaarka, daboolayaasha, xabagta)
Qoyaanka nidaamka PU wuxuu la falgalaa isocyanate, iyada oo aan loo eegin hal-qayb ama laba qaybood oo polyurethane ah, kuwaas oo soo saara amine iyo carbon dioxide, amine waxay sii wadaan inay ka falceliyaan isocyanate, si ay u isticmaalaan si ay u sii daayaan gaaska dioxide kaarboon isku mar, ku samee xumbo dusha sare ee filimka rinjiga, taasoo horseedaysa xumaan ama xitaa waxqabadka filimka rinjiga ee guuldareystay.
2% ~ 5% shaandhada molecular (budada) ee nidaamka ayaa ku filan in laga saaro qoyaanka haraaga ee nidaamka PU, laakiin ugu dambeyntii waxay ku xiran tahay qoyaanka nidaamka.
Dahaarka ka-hortagga daxalka
In epoxy zinc-primer-ka hodanka ah, qadar biyo ah ayaa soo saari doona falcelin weyn oo leh budada zinc, waxay soo saartaa hydrogen, waxay kordhisaa cadaadiska foosto, soo gaabin nolosha adeegga asaasiga ah, taasoo keentay cidhiidhi, xirto caabbinta iyo adkaanta ee filimka daahan.Shaandhooyin molecular (budada) sida qalajiyaha nuugista biyaha, taas oo gebi ahaanba jir ahaan u adkeysanaysa, waxay baabi'in doontaa biyaha oo aan wax falcelin ah la yeelan substrate-ka.Markaa shaandho molecular waa badbaado oo ku habboon nidaamka daahan ka-hortagga daxalka.
Dahaarka budada birta ah
Falcelinta la midka ah waxay ku dhici kartaa dahaarka budada birta ah, sida daahanka budada aluminium.
Alaabooyinka la xidhiidha:JZ-AZ Molecular Sieve