xov xwm

Dispersant tseem hu ua wetting thiab dispersing tus neeg sawv cev.Ntawm qhov tod tes, nws muaj cov nyhuv wetting, ntawm qhov tod tes, ib qho kawg ntawm nws pab pawg neeg nquag tuaj yeem adsorbed rau ntawm cov xim pleev xim rau hauv cov khoom zoo, thiab lwm qhov kawg yog solventized rau hauv cov khoom siv los tsim cov txheej txheem adsorption (cov. ntau pawg adsorption, qhov ntev ntawm cov saw txuas, qhov tuab ntawm cov adsorption txheej) los tsim cov nqi repulsion (dej-raws li xim) los yog entropy repulsion (cov kuab tshuaj raws li xim), kom cov xim xim tuaj yeem tawg thiab tshem tawm hauv cov xim rau. ib lub sij hawm ntev kom tsis txhob flocculation dua.Qhov no ua kom ruaj khov ntawm cov xim pleev xim.
 
Feem ntau siv hom dispersants.
1.Anionic wetting thiab dispersing tus neeg sawv cev
Lawv feem ntau yog tsim los ntawm cov tsis-polar, tsis zoo them hydrocarbon saw thiab polar hydrophilic pawg.Ob pawg yog nyob rau ntawm ob kawg ntawm lub molecule, tsim ib asymmetric hydrophilic thiab oleophilic molecular qauv.Nws ntau yam yog: sodium oleate C17H33COONa, carboxylate, sulfate (RO-SO3Na), sulfonate (R-SO3Na), thiab lwm yam. Lub compatibility ntawm anionic dispersants yog zoo, thiab polycarboxylic acid polymers, thiab lwm yam kuj yuav siv tau rau cov kuab tshuaj raws li coatings. thiab dav siv los tswj flocculation-hom dispersants.

2.Cationic wetting thiab dispersing tus neeg sawv cev
Lawv yog cov tsis-polar puag zoo them cov tebchaw, feem ntau amine ntsev, quaternary amine ntsev, pyridinium ntsev, thiab lwm yam. Cationic surfactants muaj zog adsorption zog thiab muaj zoo dispersion nyhuv ntawm carbon dub, ntau yam hlau oxides thiab organic pigments, tab sis nws yuav tsum tau muab sau tseg. tias lawv hnov ​​​​mob chemically nrog pawg carboxyl hauv cov khoom siv hauv paus, thiab tseem nco ntsoov tias lawv yuav tsum tsis txhob siv ib txhij nrog anionic dispersants.

3.Controlled dawb radical hom hyperdispersant
Thib ob, lub luag haujlwm ntawm dispersant
1.Txhim kho qhov gloss thiab ua kom cov nyhuv leveling.
2. Tiv thaiv cov xim ntab thiab paj.
3. Txhim kho xim muaj zog.
4.Txo viscosity thiab nce pigment loading.
5.Txo flocculation, nce constructability thiab usability.
6.Kev tiv thaiv rov qab thiab ua kom ruaj khov.
7.Txhim xim sib kis thiab xim saturation.
8.Ntau pob tshab lossis npog lub hwj chim.
9. Txhim kho kev sib tsoo efficiency thiab txo cov nqi tsim khoom.
10. Tiv thaiv kev daws teeb meem.