Surfactantsyog ib chav kawm ntawm cov tebchaw nrog cov qauv molecular tshwj xeeb uas tuaj yeem ua raws ntawm cov kev sib tshuam lossis cov chaw, hloov pauv qhov nro lossis cov khoom sib txuas. Hauv kev lag luam coatings, surfactants ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv, suav nrog emulsification, wetting, dispersion, defoaming, leveling, antistatic los, thiab lwm yam, yog li txhim khu kev ruaj ntseg, daim ntawv thov kev ua tau zoo, thiab qhov kawg ntawm cov txheej txheem.
1. Emulsification
Hauv emulsion-raws li txheej txheej (xws li cov txheej txheem dej), emulsifiers yog qhov tseem ceeb. Lawv txo cov kev sib tshuam ntawm cov roj thiab dej theem, ua kom muaj cov emulsion ruaj khov los ntawm cov khoom tsis sib haum. Cov emulsifiers muaj xws li anionic surfactants (piv txwv li, sodium dodecylbenzene sulfonate) thiab nonionic surfactants (xws li, polyoxyethylene ethers).
2.Pigment Wetting thiab Dispersion
Cov xim tsis sib xws ntawm cov xim hauv cov txheej txheej ncaj qha cuam tshuam rau opacity, stability, thiab xim ua haujlwm. Wetting thiab dispersing cov neeg ua haujlwm txo qis interfacial nro ntawm cov pigments thiab binders, txhawb kev sib txuam wetting thiab ruaj khov dispersion thaum tiv thaiv agglomeration thiab teeb meem.
3.Defoaming thiab ua npuas ncauj tswj
Thaum lub sij hawm tsim khoom thiab daim ntawv thov, coatings nyiam tsim npuas, uas tuaj yeem cuam tshuam cov tsos thiab kev ua haujlwm. Defoamers (piv txwv li, silicone-based lossis ntxhia roj-raws li) destabilize cov qauv ua npuas ncauj, txo cov npuas tsim thiab ua kom lub ntsej muag du, tsis muaj qhov tsis xws luag.
4. Kev txhim kho qib
Cov cuab yeej leveling ntawm coatings txiav txim siab smoothness thiab tsos ntawm qhuav zaj duab xis. Leveling agents ua haujlwm los ntawm ob lub ntsiab mechanisms:
• txo qhov nro: xyuas kom meej txawm tias kis tau rau ntawm cov substrates, txo qhov tsis xws luag xws li txiv kab ntxwv tev lossis cratering.
• Modulating hnyav evaporation: ncua sij hawm ntws, tso cai rau cov txheej txheem kom txaus ua ntej kho.
5.Antistatic Functionality
Hauv cov khoom siv hluav taws xob, ntim khoom, thiab lwm yam kev lag luam, cov coatings tuaj yeem khaws cov nqi zoo li qub vim muaj kev sib txhuam, ua rau muaj kev pheej hmoo ntawm kev nyab xeeb. Antistatic agents (xws li, cationic surfactants) adsorb ambient noo noo los tsim ib txheej conductive ntawm txheej txheej, yooj yim them dissipation thiab mitigating electrostatic txaus ntshai.
6.Antimicrobial thiab fungicidal tiv thaiv
Nyob rau hauv qhov chaw ntub dej, txheej txheej yog qhov ua rau microbial loj hlob, ua rau cov yeeb yaj kiab degradation. Antimicrobial thiab fungicidal cov neeg sawv cev (xws li, quaternary ammonium compounds) inhibit microbial proliferation, ncua lub txee lub neej thiab kev pab cuam durability ntawm coatings.
7.Gloss txhim kho thiab txhim kho plam
Tej coatings yuav tsum tau gloss los yog du nto (xws li, rooj tog los yog industrial coatings). Gloss enhancers thiab slip additives (xws li, waxes los yog silicones) txhim kho zaj duab xis reflectivity thiab txo qhov kev sib txhuam ntawm qhov chaw, txhim kho hnav tsis kam thiab tactile zog.
Surfactants ua haujlwm rau ntau lub luag haujlwm hauv kev lag luam coatings, los ntawm kev ua kom zoo rau kev ua haujlwm kom nce qib ntawm cov yeeb yaj kiab kawg, tag nrho cov leveraging lawv cov kev cai interfacial muaj peev xwm. Nrog rau kev nce qib ntawm eco-phooj ywg thiab cov txheej txheem ua tau zoo, cov tshiab, muaj txiaj ntsig zoo, thiab tsis muaj tshuaj lom surfactants yuav nyob twj ywm qhov tseem ceeb hauv kev tshawb fawb yav tom ntej txheej txheej technology.
Post lub sij hawm: Aug-11-2025