Cov kev siv surfactants hauv coatings yog dab tsi?

Cov tshuaj surfactantsyog ib pawg ntawm cov tshuaj sib xyaw nrog cov qauv molecular tshwj xeeb uas tuaj yeem sib phim ntawm qhov sib tshuam lossis qhov chaw, hloov pauv qhov nro ntawm qhov chaw lossis cov khoom sib cuam tshuam. 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 effects, thiab ntau ntxiv, yog li txhim kho qhov ruaj khov, kev ua haujlwm ntawm daim ntawv thov, thiab qhov zoo kawg ntawm cov coatings.

1. Kev sib xyaw ua ke

Hauv cov txheej txheem emulsion-based (xws li cov txheej txheem dej), cov emulsifiers yog qhov tseem ceeb. Lawv txo qhov kev sib txhuam ntawm cov roj thiab cov dej, ua rau muaj cov emulsions ruaj khov los ntawm cov khoom sib xyaw tsis sib xyaw. Cov emulsifiers feem ntau suav nrog anionic surfactants (piv txwv li, sodium dodecylbenzene sulfonate) thiab nonionic surfactants (piv txwv li, polyoxyethylene ethers).

2. Kev ntub thiab kev tawg ntawm cov xim

Qhov sib xyaw ua ke ntawm cov xim hauv cov txheej txheej cuam tshuam ncaj qha rau qhov opacity, stability, thiab kev ua tau zoo ntawm cov xim. Cov neeg sawv cev ntub thiab dispersing txo qhov kev sib txhuam ntawm cov xim thiab cov binders, txhawb kev ntub sib xyaw thiab kev sib xyaw ruaj khov thaum tiv thaiv kev sib sau ua ke thiab kev poob.

3. Kev tshem tawm npuas dej thiab kev tswj npuas dej

Thaum lub sijhawm tsim khoom thiab siv, cov txheej txheej feem ntau yuav tsim cov npuas dej, uas tuaj yeem ua rau cov yeeb yaj kiab zoo li cas thiab kev ua haujlwm tsis zoo. Cov tshuaj ua npuas dej (piv txwv li, cov roj ua los ntawm silicone lossis cov roj av) ua rau cov qauv ua npuas dej tsis ruaj khov, txo cov npuas dej thiab ua kom cov txheej txheej du thiab tsis muaj qhov tsis zoo.

4. Kev txhim kho qib

Cov khoom siv los ua kom tiaj tus ntawm cov txheej pleev xim txiav txim siab qhov du thiab zoo li cas ntawm cov zaj duab xis qhuav. Cov neeg sawv cev ua haujlwm los ntawm ob txoj hauv kev tseem ceeb:

• Txo qhov nro ntawm qhov chaw: Xyuas kom meej tias nws kis tau zoo sib npaug ntawm cov khoom siv, txo qhov tsis zoo xws li tawv txiv kab ntxwv lossis qhov tawg.

• ​Kev hloov pauv cov kuab tshuaj uas yaj hauv dej: Ua kom lub sijhawm ntws ntev dua, ua rau cov txheej txheej kom sib npaug zoo ua ntej nws qhuav.

5. Kev Ua Haujlwm Tiv Thaiv Hluav Taws Xob

Hauv cov khoom siv hluav taws xob, kev ntim khoom, thiab lwm yam teb, cov txheej txheej yuav khaws cov nqi hluav taws xob zoo li qub vim muaj kev sib txhuam, ua rau muaj kev pheej hmoo rau kev nyab xeeb. Cov neeg sawv cev tiv thaiv hluav taws xob (piv txwv li, cov tshuaj cationic surfactants) nqus cov dej noo ib puag ncig los ua ib txheej conductive ntawm qhov chaw txheej, pab txhawb kev tshem tawm cov nqi thiab txo cov kev phom sij ntawm electrostatic.

6. Kev Tiv Thaiv Kab Mob thiab Kab Mob Fungicidal

Nyob rau hauv qhov chaw noo noo, cov txheej txheej yuav yooj yim rau cov kab mob loj hlob, ua rau cov zaj duab xis puas tsuaj. Cov tshuaj tua kab mob thiab cov fungicidal (piv txwv li, quaternary ammonium compounds) inhibit microbial proliferation, ntev lub txee lub neej thiab kev siv tau ntev ntawm cov txheej txheej.

7. Kev txhim kho ci ntsa iab thiab kev txhim kho kev plam

Qee cov txheej txheej yuav tsum tau muaj cov nplaim ci ntsa iab lossis du (piv txwv li, rooj tog lossis cov txheej txheej kev lag luam). Cov tshuaj txhim kho ci ntsa iab thiab cov khoom ntxiv rau kev plam (piv txwv li, cov quav ciab lossis cov silicones) txhim kho kev cuam tshuam ntawm zaj duab xis thiab txo qhov kev sib txhuam ntawm qhov chaw, ua kom muaj kev tiv thaiv kev hnav thiab cov khoom kov.

Cov tshuaj surfactants ua haujlwm ntau yam hauv kev lag luam coatings, los ntawm kev ua kom zoo dua qub mus rau kev nce qib ntawm cov khoom kawg ntawm zaj duab xis, txhua yam siv lawv cov peev xwm tswj hwm kev sib cuam tshuam. Nrog rau kev nce qib ntawm cov coatings uas zoo rau ib puag ncig thiab kev ua haujlwm siab, cov surfactants tshiab, ua haujlwm tau zoo, thiab tsis muaj tshuaj lom yuav tseem yog qhov tseem ceeb hauv kev tshawb fawb txog kev siv tshuab coatings yav tom ntej.