Polyamide (PA) waxaa badanaa loo yaqaannaa naylon, iyo naylon silsilad dheer oo kaarboon ah waxaa loola jeedaa noocyo naylon ah oo leh 10 ama in ka badan kooxaha methylene ee u dhexeeya bonds amide ee silsiladda ugu weyn ee macromolecule, sida PA11, PA12, PA1010, PA1212, PA1012, iwm. .

iyaga ka mid ah, PA610 iyo PA612 laba polyamides aliphatic, doorashada ee diamines silsilad dheer iyo uumi hexamethylene diamine, si adag u hadlay, ma la kulmaan qeexida kor ku xusan, ay sabab u tahay dhererka diacid ka badan 10 carbon, dhererka xilliyeed ee bareeg ah. kala badh ka mid ah waa in ay la kulmaan qeexida dheer ee silsilad naylon carbon, halka dhererka diamine oo kaliya 6 carbon, taasoo keentay in wax iska caabin heerkulka walxaha iyo guryaha farsamo iyo guryaha kale oo ka fiican naylon silsilad dheer carbon, wax yar ka hooseeya Ujeedada guud ee nylon PA6. iyo PA66, sidaas darteed PA610 iyo PA612 ayaa inta badan loo kala saaraa sida silsiladda kaarboonka dheer ee nayloonyada.

PA6 iyo PA66 waxay leeyihiin heer nuugista biyaha oo sarreeya, taasoo keentay kala duwanaansho sare oo cabbirka badeecada iyo guryaha iyo heerkulka habaynta sare.Nayloonyada silsiladda kaarboonka ee dheer ayaa ka dhigi kara yaraanta silsiladaha kaarboonka ee gaaban sababtoo ah qaybaha silsiladda methylene ee dheer ee u dhexeeya kooxaha amide ee ku xiga.Marka lagu daro sifooyinka aasaasiga ah ee polyamides, waxay sidoo kale ka muuqdaan cufnaanta qaraabada hoose, nuugista biyaha hooseeya, xasilloonida cabbirka wanaagsan, caabbinta kiimikada wanaagsan, guryaha korantada ee wanaagsan, caabbinta daxalka, caabbinta naaska, adkaanta, caabbinta daalka iyo iska caabinta heerkulka hooseeya ee heersare ah.