Lub luag haujlwm ntawmDispersing tus neeg sawv cev MFyog kom txo tau lub sij hawm thiab lub zog yuav tsum tau ua kom tiav cov txheej txheem dispersion, stabilize lub dispersed pigment dispersion, hloov cov khoom nto ntawm cov xim pigment, kho qhov txav ntawm cov xim pigment, thiab lwm yam.
Nws yog embodied nyob rau hauv cov nram qab no yam:
Shorten lub sij hawm thiab lub zog ntawm lubDispersing tus neeg sawv cev MFtxheej txheem
Los ntawm kev sib raug zoo, qhov chaw ntawm cov xim pigment tuaj yeem hloov pauv sai dua ntawm "gas-solid interface" mus rau "kua-kua interface". Yog li txo lub sijhawm thiab lub zog xav tau rau kev sib tsoo.
Txo cov viscosity
Daim ntawv thov ntawm dispersant tuaj yeem txo cov viscosity thiab ua kom muaj peev xwm thauj khoom ntawm cov xim.
Tiv thaiv flocculation thiab rov qab mus rau ntxhib
Dispersant ntawm pigment nto, los ntawm electrostatic repulsion los yog steric hindrance kom tsis txhob muaj kev sib nrig sib attraction thiab kaw, thiaj li yuav ua rau kom lub stability ntawm lub system.
Nws yog tsim nyog hais tias qhov zoo dua cov xim pigment, qhov loj ntawm qhov chaw tshwj xeeb, qhov siab dua lub zog saum npoo, qhov xav tau ntau dua adsorption zog.Dispersing tus neeg sawv cev MF, yog li tus nqi ntawm dispersant kuj muaj feem xyuam rau qhov zoo ntawm cov muab tshuaj txhuam.
Tiv thaiv cov plaub hau ntab
Zoo ib yam li cov hauv paus ntsiab lus saum toj no, yog lub ntsiab lus ntawm dispersant stability.
Txhim kho xim kev ua haujlwm
Txhim kho lub zog tinting, nce cov zaub ntawm cov xim. Txhim kho qhov saturation thiab pob tshab ntawm cov organic pigments, thiab nce lub zog zais ntawm cov xim tsis muaj zog.
Influence rau xim zaj duab xis kev ua tau zoo
Dispersant yuav tsis tawm ntawm cov xim pleev xim tom qab tsim cov yeeb yaj kiab, tab sis raws li ib feem ntawm cov xim pleev xim muaj nyob hauv cov xim zaj duab xis, nws tsis muaj qhov cuam tshuam me me rau kev ua haujlwm ntawm cov xim pleev xim.
Kev cuam tshuam ntawm dej tsis kam:
Los ntawm lub hauv paus ntsiab lus ntawm dispersant, lub ntsiab lus ntawm dispersant yog surfactant, nrog amphiphilic zog. Yog li ntawd, cov dispersant yuav inevitably muaj ib tug tej yam hydrophilic, nyob rau hauv cov xim zaj duab xis muaj kev cuam tshuam zoo rau cov dej tsis kam.
Sv-246h dej-raws li superdispersant yog cov khoom hloov kho hydrophobic, zaj duab xis qhuav, yuav tsis cuam tshuam rau zaj duab xis nws tus kheej dej tsis kam.
Cov nyhuv ntawm gloss:
Lub gloss ntawm cov xim zaj duab xis nto yog tsuas yog los ntawm kev xav ntawm lub teeb ntawm cov xim zaj duab xis nto, thiab lub xeev nto nyob ntawm seb qhov luaj li cas ntawm txhua yam, nrog rau kev sib haum xeeb thiab kev faib tawm hauv lub xeev.
Dispersant dispersion, stability yog undoubtedly ib tug zoo pab rau lub gloss ntawm cov xim zaj duab xis. Tab sis kuj yuav tsum xav txog qhov dispersant nws tus kheej thiab resin nws tus kheej compatibility. Piv txwv li, SV-246H dej-raws li superdispersant muaj kev sib raug zoo hauv dej-raws li acrylic systems, thiab tuaj yeem ua rau gloss los ntawm 2-3% piv rau cov pa dispersants xws li 755W thiab 190.
xaus
Dispersant yog ib qho tseem ceeb heev additive nyob rau hauv txheej.
Nws tsis tsuas yog txawv ntawm zaj duab xis tsim cov pab pawg, pH regulator yuav volatilize nyob rau hauv cov txheej txheem ziab; Nws kuj txawv ntawm tus neeg sawv cev ntub dej, tus neeg saib xyuas defoaming thiab tus neeg sawv cev thickening.
Vim tias nws ib txwm muaj nyob rau hauv cov xim zaj duab xis thiab muaj cov ntsiab lus siab, nws muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov xim pleev xim. Yog li ntawd, kev xaiv thiab siv cov dispersant yog qhov kev pab zoo rau kev ua haujlwm ntawm txheej.
Post lub sij hawm: May-19-2022