Amines, acid anhydrides, polyamines
Cov khoom tseem ceeb ntawm cov tshuaj tua kab mob muaj xws li amines, acid anhydrides, polyamines, thiab lwm yam.
Curing agent yog ib hom tshuaj los yog sib tov uas txhawb los yog tswj cov tshuaj tua kab mob. Nws yog tsuas yog siv nyob rau hauv cov resin, yas, nplaum thiab txheej industries los ua cross-linking ntawm polymer molecules. Common curing agent cov khoom xyaw yog:
Amines: suav nrog aliphatic amines, alicyclic amines thiab aromatic amines. Aliphatic amines muaj qhov ua haujlwm siab, tuaj yeem kho tau sai ntawm chav tsev kub lossis qhov kub thiab txias, thiab tsis tshua muaj siab rau cov av noo; alicyclic amines kuj tuaj yeem kho tau ntawm chav tsev kub thiab muaj qee qhov kam rau cov av noo; aromatic amines yog rhiab heev rau cov av noo.
Acid anhydride : reacts nrog epoxy resin los ua ib daim ntawv cog lus ester, muaj cov khoom siv hluav taws xob zoo thiab tshuaj lom neeg, thiab siv dav hauv cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob.
Polyamine: Aliphatic polyamine kho cov khoom muaj cov nplaum zoo heev, alkali tsis kam, thiab dej tsis kam; aromatic polyamines kuj zoo heev nyob rau hauv tshuaj resistant thiab muaj zoo heev los tiv thaiv xeb.
Tsis tas li ntawd, hom thiab muaj pes tsawg leeg ntawm tus neeg sawv cev curing muaj qhov cuam tshuam loj rau nws qhov kev ua tau zoo, nrog rau cov khoom siv kho tshuab, kev ua haujlwm kub, dej tsis kam thiab corrosion kuj. Piv txwv li, cov tshuaj tsw qab curing zoo heev nyob rau hauv gloss tab sis yog heev irritating; aliphatic curing agents tsis tshua khaus tab sis muaj gloss tsis zoo.