Tus nqi ntawm txheej txheej additives nyob rau hauv lub txheej yog heev me me, tab sis nws muaj peev xwm muab cov txheej txheem zoo heev mechanical zog thiab ruaj khov tshuaj, thiab tau dhau los ua ib qho tseem ceeb ntawm cov txheej txheem.Thickener yog ib hom xim additives.Nws yog ib qho tseem ceeb heev ntawm cov additives rau waterborne coatings nrog tsawg viscosity.Cov dej ntsiab lus yog loj thiab cov fluidity kuj loj, uas yuav tsum tau ntxiv ib co thickeners rau neutralize nws viscosity.Tsis tas li ntawd, cov xim latex feem ntau ntsib teeb meem kev sib cais dej thaum lub sij hawm tsim khoom, kev thauj mus los, kev cia khoom, thiab kev tsim kho.Txawm hais tias nws tuaj yeem ncua sijhawm los ntawm kev ua kom cov viscosity thiab dispersion ntawm cov xim latex, xws li kev hloov kho feem ntau txwv thiab tseem ceeb dua.Los yog los ntawm kev xaiv thickener thiab nws siv los daws qhov teeb meem no.
Disperse Dyestuff Printing Thickener
Lub luag hauj lwm ntawm thickener ib Tiv thaiv cov xim los ntawm sagging thaum painting ntsug nto.Disperse Dyestuff Printing Thickener yog rheological tshuaj ntxiv.Nws lub hom phiaj tseem ceeb yog txhawm rau txhim kho qhov sib xws, tswj cov yam ntxwv ntawm cov khoom siv dej, txhim kho fluidity thiab qib, thiab tiv thaiv qhov tshwm sim ntawm kev tsim kho.Qhov tshwm sim sagging, tshwj xeeb tshaj yog nyob rau ntawm phab ntsa ntsug lossis cov ces kaum thiab cov ces kaum, tuaj yeem pleev xim zoo heev.Cov tha xim ntau dua thiab cov xim puv puv, uas yuav tsis cuam tshuam rau cov txheej txheem tom ntej.Cov xim tsis muaj xim pleev xim yuav ntws zoo li dej.Lub luag hauj lwm ntawm thickener ob ruaj khov cia cov xim.Lub thickener rau cov xim muaj cov tshuaj ruaj khov thiab tuaj yeem sib koom ua ke zoo nrog ntau yam ntxiv ntawm cov xim, yog li nws tsis tshwm sim thinning thiab delamination, thiab tuaj yeem tiv thaiv cov xim los ntawm kev teeb tsa.Tom qab cov xim ntxiv nrog cov xim thickener, viscosity nce, uas tuaj yeem tiv thaiv cov khoom tawg ntawm cov xim los ntawm agglomeration thiab nag lossis daus thaum lub sij hawm cia, yog li ua tiav ntau ruaj khov cia.Thickener effect peb Tswj lub fluidity ntawm cov xim.Qhov sib ntxiv ntawm cov xim thickener tuaj yeem ua kom ntev lub sijhawm ua yeeb yaj kiab ntawm cov xim, txo cov dej ntws thiab txaws thaum lub sij hawm cov menyuam txheej los yog txhuam, kom ua tiav cov haujlwm ntawm qib txheej txheej zaj duab xis.Txheej thickeners tuaj yeem muab faib ua ob pawg raws li lawv hom Cov uas tsis yog koom nrog cov thickener tuaj yeem txhim kho qhov qis-shear viscosity thiab ua rau cov txheej txheem txheej txheej muaj pseudoplasticity ntau dua.Cov txheej nrog cov non-associative thickener raws li lub ntsiab thickener configuration muaj ntau dua gel qauv.Xws li: inorganic, cellulose ether, alkali-o acrylic thickener;Lub associative thickener yog hydrophobic associative dej-soluble polymer, feem ntau yog hais txog cov dej-soluble polymer nrog me me ntawm hydrophobic pawg ntawm hydrophilic macromolecular saw, suav nrog: hydrophobically hloov alkali-swelled thickener, Non-ionic polyurethane, hydrophobically hloov cellulose .Lub thickener zoo yuav tsum ua tau raws li cov cai hauv qab no: Txhim kho cov viscosity ntawm cov xim thiab inhibit qhov sib cais ntawm cov xim thaum khaws cia, Txo cov viscosity thaum pleev xim rau ntawm kev kub ceev, Tom qab pleev xim, ua kom cov viscosity ntawm cov xim txheej thiab tiv thaiv sagging.Kev khaws cov xim pleev xim rau cov xim pleev xim yuav tsum muab khaws cia rau hauv ib qho chaw nrog qhov kub ntawm 5 ~ 40 ℃, thiab qhov chaw cia yuav tsum qhuav thiab cua.Yog hais tias cov khoom ua rau khov, nws yuav tsum tau thawed hauv dej sov thiab sib tov kom huv si.Tsis tas li ntawd, cov xim pleev xim yuav tsum tau muab khaws cia rau hauv lub thawv qub, lossis lwm yam iav, stainless hlau, yas lossis epoxy resin lined ntim ntim, tsis yog hauv cov thawv uas tsis muaj cov hlau, tooj liab lossis txhuas.
Post lub sij hawm: Jun-05-2020