xov xwm

Hauv cov xim pleev xim uas muaj dej, cov tshuaj emulsions, cov tshuaj thickeners, cov tshuaj dispersants, cov tshuaj solvents, thiab cov tshuaj leveling agents tuaj yeem txo qhov nro ntawm cov xim pleev xim, thiab thaum cov kev txo no tsis txaus, koj tuaj yeem xaiv cov tshuaj substrate wetting agent.

Thov nco ntsoov tias kev xaiv cov tshuaj ua kom cov xim pleev xim zoo tuaj yeem txhim kho qhov zoo ntawm cov xim pleev xim uas ntws hauv dej, yog li ntau cov tshuaj ua kom cov xim pleev xim yog cov tshuaj ua kom cov xim pleev xim sib npaug.

Cov hom tshuaj ua kom cov substrate ntub yog: anionic surfactants, nonionic surfactants, polyether-modified polysiloxanes, acetylene diols, thiab lwm yam. Cov kev cai tseem ceeb rau cov tshuaj ua kom cov substrate ntub yog kev ua haujlwm siab hauv kev txo qhov nro ntawm qhov chaw, kev sib raug zoo ntawm lub kaw lus (tshwj xeeb tshaj yog rau cov xim pleev xim uas muaj dej ci ntsa iab), feem ntau yaj hauv dej, npuas tsawg thiab npuas tsis ruaj khov, tsis tshua muaj kev nkag siab rau dej, thiab yuav tsis ua rau muaj teeb meem rov pleev xim thiab poob kev nplaum.

Cov neeg sawv cev ntub dej uas siv ntau yog ethylene oxide adducts (piv txwv li, polyoxyethylene-nonylphenol hom), polyorganosilicon hom thiab non-ionic fluorocarbon polymer hom sib xyaw thiab lwm hom, uas fluorocarbon polymer hom ntub dej tus neeg sawv cev los txo qhov nro ntawm qhov chaw yog qhov cuam tshuam tseem ceeb tshaj plaws.

Ib qho kev nkag siab yuam kev, uas cuam tshuam los ntawm kev tshaj tawm, yog tias qhov cuam tshuam ntawm kev txo qhov nro ntawm qhov chaw ib leeg yog txiav txim siab thaum nws yog lub peev xwm nthuav dav ntawm cov txheej txheem rau ntawm lub substrate uas tseem ceeb dua, thiab cov yam ntxwv no kuj cuam tshuam nrog kev sib raug zoo ntawm lub kaw lus thiab qhov nro ntawm qhov chaw kom raug.

Lub peev xwm nthuav dav ntawm cov tshuaj ntub dej tuaj yeem txiav txim siab los ntawm kev ntsuas thaj chaw nthuav dav ntawm ib qho ntim (0.05 ml) ntawm cov xim rau ntawm cov khoom siv uas tau coated ua ntej tom qab ntxiv cov tshuaj ntub dej rau hauv cov xim.

Feem ntau, tus nqi ntawm qhov nro ntawm qhov chaw zoo li qub tsis tuaj yeem sib xws nrog lub peev xwm ntub ntawm cov xim thaum lub sijhawm tsim kho, vim tias cov xim nyob hauv thaj chaw ntxhov siab thaum lub sijhawm tsim kho, thiab qhov qis dua qhov nro ntawm qhov chaw dynamic thaum lub sijhawm no, qhov zoo dua rau kev ntub. Fluorocarbon surfactants feem ntau txo qhov nro ntawm qhov chaw zoo li qub, uas yog ib qho ntawm cov laj thawj vim li cas kev siv fluorocarbon surfactants tsis dav dua li ntawm silicones.

Kev xaiv cov tshuaj yaj uas tsim nyog kuj tseem tuaj yeem muaj cov nyhuv zoo rau kev ntub dej ntawm cov substrate. Vim tias cov tshuaj yaj sib xws nrog lub kaw lus, qhov kev nruj ntawm qhov chaw dynamic yog qis.

Kev saib xyuas tshwj xeeb: yog tias tus neeg sawv cev ntub dej ntawm lub substrate tsis raug xaiv kom raug, nws yuav tsim ib txheej molecular ntawm lub substrate, yog li qhov sib xws nrog lub txheej txheej tsis zoo lawm, uas yuav cuam tshuam rau qhov lo.

Muaj ntau yam tshuaj ntub dej sib txawv uas tuaj yeem sib xyaw ua ke los daws cov teeb meem ntub dej ntawm cov substrate uas nyuaj dua.