Uyisebenzisa njani i-hydroxyethyl cellulose kwipeyinti yelatex
1. I-Hydroxyethyl cellulose isetyenziselwa ukwenza isidudu: Ekubeni i-hydroxyethyl cellulose ingekho lula ukunyibilika kwi-solvents ye-organic, ezinye i-solvents eziphilayo zingasetyenziselwa ukulungiselela isidudu. Amanzi omkhenkce nawo asisinyibilikisi esilambathayo, ngoko ke amanzi omkhenkce adla ngokusetyenziswa kunye nolwelo lwendalo ukulungiselela isidudu. I-porridge efana ne-hydroxyethyl cellulose inokongezwa ngokuthe ngqo kwipeyinti ye-latex. I-Hydroxyethyl cellulose ifakwe ngokupheleleyo kwisidudu. Xa ifakwe kwipeyinti, iyancibilika ngokukhawuleza kwaye isebenze njenge-thickener. Emva kokongeza, qhubeka uvuselela de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye ichithwe. Ngokuqhelekileyo, isidudu senziwa ngokuxuba iinxalenye ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose. Emva kwemizuzu emi-5 ukuya kwengama-30, i-cellulose ye-hydroxyethyl iya kwenziwa i-hydrolyzed kwaye idumbe ngokucacileyo. (Khumbula ukuba ukufuma kwamanzi ngokubanzi kuphezulu kakhulu ehlotyeni, ngoko akufanele kusetyenziswe ukuxhobisa isidudu.)
2. Yongeza i-hydroxyethyl cellulose ngokuthe ngqo xa ugaya i-pigment: Le ndlela ilula kwaye ithatha ixesha elifutshane. Indlela eneenkcukacha ngolu hlobo lulandelayo:
(1) Yongeza ubungakanani obufanelekileyo bamanzi acociweyo kwi-emele enkulu yesixube esikhulu sokucheba (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 zonke iinqununu zihlakazwe ngokulinganayo kwaye zixutywe
(4) Yongeza izongezo zokulwa nokungunda ukulungisa ixabiso le-PH
(5) Gxuma de kube yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu), uze ungeze amanye amacandelo kwifomula, kwaye ugaye de kube yipeyinti.
3. Lungiselela i-hydroxyethyl cellulose ngotywala bukamama ukuze usetyenziswe kamva: 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 nendlela iyafana namanyathelo (1) - (4) kwindlela yesi-2, umahluko kukuba akukho mfuneko ye-agitator ephezulu, kwaye kuphela ezinye ii-agitators ezinamandla ngokwaneleyo ukugcina i-fiber ye-hydroxyethyl ihlakazekile ngokulinganayo kwisisombululo. . Qhubeka uvuselela ngokuqhubekayo 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 kwaye iyinyibilikise emanzini nje ngokuba ezi zinto zilandelayo zihlaziywa.
(1) Ngaphambi nangemva kokongeza i-hydroxyethyl cellulose, kufuneka iqhutywe ngokuqhubekayo de isisombululo sibonakale ngokucacileyo kwaye sicace.
(2) Kufuneka ihluzwe kancinane kwitanki yokuxuba, kwaye ungafaki ngokuthe ngqo inani elikhulu le-hydroxyethyl cellulose eyenze amaqhuma okanye iibhola kwitanki yokuxuba.
(3) Ubushushu bamanzi kunye nexabiso le-pH emanzini linobudlelwane obubalulekileyo kunye nokuchithwa kwe-hydroxyethyl cellulose, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe.
(4) Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH emva kokumanzisa kunceda ukunyibilika.
(5) Kangangoko kunokwenzeka, yongeza i-anti-fungal agent kwangethuba.
(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) Ngenxa yokuvuselela okugqithisileyo, ukufuma kushushu kakhulu ngexesha lokusasazwa.
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(3) Ingaba ubungakanani be-surfactant kunye nomthamo wamanzi asetyenziswe kwifomula yepeyinti ifanelekile.
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(5) Ukonakala kwe-thickener yi-microorganisms.
(6) Kwinkqubo yokwenza ipeyinti, ingaba ulandelelwano lwenyathelo lokongeza i-thickener lufanelekile.
7 Okukhona amaqamza omoya ehlala epeyintini, kokukhona i-viscosity iphezulu
Ixesha lokuposa: Mar-04-2023