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 akufuneki 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:
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(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