Uyisebenzisa njani i-hydroxyethyl cellulose kwipeyinti yelatex
1. I-Hydroxyethyl cellulose isetyenziselwa ukulungiselela i-porridge: Ekubeni i-hydroxyethyl cellulose ingekho lula ukunyibilika kwi-solvents ye-organic, ezinye i-solvents eziphilayo zingasetyenziselwa ukulungiselela i-porridge.Amanzi omkhenkce nawo asisinyibilikisi esilambathayo, ngoko ke amanzi omkhenkce asetyenziswa rhoqo kunye nolwelo lwendalo ukulungiselela isidudu.I-porridge efana ne-hydroxyethyl cellulose inokongezwa ngokuthe ngqo kwipeyinti ye-latex.I-hydroxyethyl cellulose idumbe ngokupheleleyo kwisidudu.Xa ifakwe kwipeyinti, iyachithwa ngokukhawuleza kwaye idlala indima yokuqina.Emva kokongeza, kusafuneka ukuba uqhubeke uvuselela de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye ichithwe.Ngokuqhelekileyo, i-porridge ixutywe kunye neengxenye ezintandathu ze-organic solvent okanye amanzi e-ice kunye nenxalenye enye ye-hydroxyethyl cellulose.Emva kwemizuzu emi-5 ukuya kwengama-30, i-hydroxyethyl cellulose iya kwenziwa i-hydrolyzed kwaye idumbe ngokucacileyo.(Kucetyiswa ukuba ukufuma kwamanzi ngokubanzi kuphezulu kakhulu ehlotyeni, ngoko ke akafanelekanga ukusetyenziselwa isidudu.)
2. Yongeza i-hydroxyethyl cellulose ngokuthe ngqo xa ugaya i-pigment: Le ndlela ilula kwaye ithatha ixesha elincinci.Indlela eneenkcukacha ngolu hlobo lulandelayo:
(1) Yongeza amanzi acocekileyo afanelekileyo kwivathi ye-agitator ephezulu (ngokubanzi, izixhobo zokwenza ifilim kunye neearhente zokumanzisa zongezwa ngeli xesha)
(2) Qala ukuvuselela ngokuqhubekayo ngesantya esiphantsi kwaye ngokukhawuleza kwaye ngokulinganayo ungeze i-hydroxyethyl cellulose
(3) Qhubeka uvuselela de onke amaqhekeza ahlakazwe ngokulinganayo kwaye afakwe
(4) Yongeza izongezo ze-antifungal ukulungisa ixabiso le-PH
(5) Gxuma de yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu), uze ungeze amanye amacandelo kwifomula, kwaye ugaye de ibe yipeyinti.
3. Lungiselela i-hydroxyethyl cellulose enotywala bukamama ukuze uyisebenzise: Le ndlela kukulungisa utywala bukamama obunogxininiso oluphezulu kuqala, kwaye emva koko bongeze kwipeyinti yelatex.Inzuzo yale ndlela kukuba iguquguquka ngakumbi kwaye inokongezwa ngokuthe ngqo kwipeyinti egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo..Amanyathelo kunye neendlela ziyafana namanyathelo (1)-(4) kwindlela yesi-2, umahluko kukuba akukho mfuneko ye-agitator ephezulu yokucheba, kwaye kuphela ezinye ii-agitators ezinamandla aneleyo okugcina iifayili ze-hydroxyethyl zihlakazwe ngokufanayo kwi-agitator. isisombululo zisetyenziswa.Ngaba.Qhubeka uvuselela ude unyibilike ngokupheleleyo kwisisombululo se-viscous.Kufuneka kuqatshelwe ukuba i-agent ye-antifungal kufuneka yongezwe kumama wepeyinti yotywala ngokukhawuleza.
4 Imiba efuna ingqwalasela xa kulungiswa utywala kamama be-hydroxyethyl cellulose
Ekubeni i-hydroxyethyl cellulose i-powder ecutshungulwayo, kulula ukuyiphatha kunye nokuchithwa emanzini nje ngokuba kuphawulwe le mibandela elandelayo.
(1) Ngaphambi nasemva kokongeza i-hydroxyethyl cellulose, kufuneka igcinwe ivuselela de isisombululo sicace ngokupheleleyo kwaye sicace.
(2) Kufuneka ihluzwe kwi-barrel yokuxuba ngokucothayo.Musa ukongeza ngokuthe ngqo i-cellulose ye-hydroxyethyl eyenziwe ibe ngamaqhuma kunye neebhola kwi-barrel yokuxuba ngobuninzi okanye ngokuthe ngqo.
(3) Ubushushu bamanzi kunye nexabiso le-pH emanzini zinobudlelwane obubalulekileyo bokuchithwa kwe-hydroxyethyl cellulose, ngoko kufuneka kuhlawulwe ingqalelo ekhethekileyo.
(4) Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini.Ukunyusa i-pH kuphela emva kokumanzisa kuya kunceda ekunyibilikeni.
(5) Kangangoko kunokwenzeka, yongeza i-agent ye-antifungal ngokukhawuleza.
(6) Xa usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala lukamama luya kuba nzima ukuphatha.
Izinto ezichaphazela i-viscosity yepeyinti ye-latex:
(1) Ukufuma kushushu kakhulu ngexesha lokusasazwa ngenxa yokuvuselela okugqithisileyo.
(2) Umthamo wezinye izityebi zendalo kunye nomlinganiselo wedosi ye-hydroxyethyl cellulose kwifomula yepeyinti.)
(3) Ingaba ubungakanani be-surfactant kunye nomthamo wamanzi kwifomula yepeyinti ifanelekile.
(4 Xa kusenziwa i-latex, inani le-catalyst eyintsalela kunye nezinye ii-oxides.
5 Ukhukuliseko lweMicrobial yee-thickeners.
6 Ngexesha lenkqubo yokwenziwa kwepeyinti, ngaba ukulandelelana kwamanyathelo okongeza i-thickeners kufanelekile?
7 Okukhona uphezulu umxholo wamaqamza omoya aseleyo kwipeyinti, kokukhona i-viscosity iphezulu
Ixesha lokuposa: Nov-02-2022