iindaba

Kwiipeyinti ezisekelwe emanzini, i-emulsions, i-thickeners, i-dispersants, i-solvents, i-agent yokulinganisa inokunciphisa ukunyanzeliswa komphezulu wepeyinti, kwaye xa oku kuncitshiswa kunganelanga, unokukhetha i-agent ye-substrate yokumanzisa.

Nceda uqaphele ukuba ukhetho olufanelekileyo lwe-agent yokumanzisa i-substrate inokuphucula umgangatho wokulinganisa wepeyinti ephuma emanzini, ngoko ke ezininzi ii-agent zokumanzisa i-substrate zi-agent zokulinganisa.

Iindidi ze-substrate arhente zokumanzisa zezi: anionic surfactants, nonionic surfactants, polyether-modified polysiloxanes, acetylene diols, njl. Iimfuno ezisisiseko ze-substrate wetting agents zisebenza kakuhle ekunciphiseni ukuxinana komphezulu, ukuhambelana kakuhle kwenkqubo (ingakumbi kumanzi acwebezelayo aphezulu- Ipeyinti esekwe), idla ngokunyibilika emanzini, iqamza eliphantsi kwaye alizinzanga, uvakalelo oluphantsi lwamanzi, kwaye aluyi kubangela iingxaki zokuphinda kubekhona kunye nelahleko yokuncamathela.

Ngokuqhelekileyo i-substrate wetting agents ezisetyenziswayo zi-ethylene oxide adducts (umzekelo, i-polyoxyethylene-nonylphenol type), uhlobo lwe-polyorganosilicon kunye ne-non-ionic fluorocarbon polymer uhlobo lwekhompawundi kunye nezinye iintlobo, apho i-fluorocarbon polymer uhlobo lokumanzisa i-arhente yokunciphisa ukuxinana komphezulu yeyona mpembelelo ibalulekileyo.

Ukungaqondi kakuhle, okuchatshazelwa yintengiso, kukuba umphumo wokunciphisa ukunyanzeliswa komphezulu wedwa unqunywe xa kukwazi ukusasazeka kwengubo kwi-substrate ebaluleke kakhulu, kwaye le propati inxulumene nokuhambelana kwenkqubo kunye nokufanelekileyo. umphezulu woxinzelelo.

Ikhono lokusabalalisa i-ejenti yokumanzisa inokumiselwa ngokulinganisa indawo yokusabalalisa umthamo onikiweyo (0.05 ml) wepeyinti kwi-substrate ehlanganiswe ngaphambili emva kokongeza i-concentration ye-substrate wetting agent kwipende.Iiarhente zokumanzisa.

Kwiimeko ezininzi, ixabiso le-static surface tension alikwazi ukuhambelana nokukwazi ukumanzisa ipeyinti ngexesha lokwakha, ngenxa yokuba ipeyinti ikwindawo yoxinzelelo ngexesha lokwakha, kwaye isezantsi i-dynamic surface tension ngeli xesha, kunenzuzo ngakumbi ukumanzisa.I-Fluorocarbon surfactants ubukhulu becala inciphisa i-static surface tension, esesinye sezizathu zokuba ukusetyenziswa kwe-fluorocarbon surfactants kuncinci kakhulu kune-silicones.

Ukukhetha i-solvent efanelekileyo kunokuba nefuthe elihle lokumanzisa i-substrate.Ngenxa yokuba i-solvent iyahambelana nenkqubo, i-dynamic surface tension iphantsi.

Ingqwalasela ekhethekileyo: ukuba i-agent yokumanzisa i-substrate ayikhethwanga ngokufanelekileyo, iya kwenza i-molecular layer kwi-substrate, ngoko ke ukuhambelana nenkqubo yokugubungela akusekho kuhle, okuya kuchaphazela ukunamathela.

Iiarhente zokumanzisa ezininzi ezahlukeneyo zinokuxutywa ukusombulula ukumanzisa okuntsonkothileyo kwesubstrate.