Uyisebenzisa njani i-hydroxyethyl cellulose kwipeyinti yelatex
1. I-Hydroxyethyl cellulose isetyenziselwa ukulungisa 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, ichithwa 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 amasuntswana 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 ukugcina imicu ye-hydroxyethyl ihlakazwe ngokufanayo isisombululo zisetyenziswa. Ngaba. Qhubeka nokuvuselela rhoqo de 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