Indlela yokusebenzisa i-hydroxyethyl cellulose kwipeyinti yelatex
1. I-Hydroxyethyl cellulose isetyenziselwa ukwenza i-porridge: Ekubeni i-hydroxyethyl cellulose ingekho lula ukuyinyibilikisa kwi-organic solvents, ezinye i-organic solvents zingasetyenziselwa ukulungiselela i-porridge. Amanzi omkhenkce nawo ayisombululi esibi, ngoko ke amanzi omkhenkce adla ngokusetyenziswa kunye ne-organic liquids ukulungiselela i-porridge. I-porridge-like hydroxyethyl cellulose inokongezwa ngokuthe ngqo kwipeyinti ye-latex. I-Hydroxyethyl cellulose imanziswe ngokupheleleyo kwi-porridge. Xa yongezwa kwipeyinti, iyanyibilika ngokukhawuleza kwaye isebenze njenge-thickener. Emva kokongeza, qhubeka uvuselela de i-hydroxyethyl cellulose isasazeke ngokupheleleyo kwaye ichitheke. Ngokubanzi, i-porridge yenziwa ngokuxuba iindawo ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose. Emva kwemizuzu emi-5-30, i-hydroxyethyl cellulose iya kufakelwa i-hydrolyzed kwaye idumbe ngokucacileyo. (Khumbula ukuba ukufuma kwamanzi ngokubanzi kuphezulu kakhulu ehlotyeni, ngoko akufanele kusetyenziswe ukuxhobisa i-porridge.)
2. Yongeza i-hydroxyethyl cellulose ngqo xa ucola i-pigment: Le ndlela ilula kwaye ithatha ixesha elifutshane. Indlela eneenkcukacha yile ilandelayo:
(1) Yongeza amanzi acocekileyo afanelekileyo kwibhakethi enkulu yomxube ocoliweyo kakhulu (ngokubanzi, izixhobo zokwenza ifilimu kunye nezinto zokumanzisa zongezwa ngeli xesha)
(2) Qalisa ukuxuba rhoqo ngesantya esiphantsi uze wongeze kancinci nangokulinganayo i-hydroxyethyl cellulose
(3) Qhubeka uvuselela ude onke amasuntswana asasazeke ngokulinganayo aze afunxwe
(4) Yongeza izongezo ezichasene nokungunda ukuze ulungise ixabiso le-PH
(5) Xuba de yonke i-hydroxyethyl cellulose ichitheke ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu), uze wongeze ezinye izinto kwifomyula, uze usike ide ipeyinti yenziwe.
3. Lungisa i-hydroxyethyl cellulose ngotywala bomama ukuze isetyenziswe kamva: Le ndlela kukulungiselela utywala bomama ngoxinzelelo oluphezulu kuqala, uze uyifake kwipeyinti yelatex. Inzuzo yale ndlela kukuba iguquguquka ngakumbi kwaye ingongezwa ngokuthe ngqo kwipeyinti egqityiweyo, kodwa kufuneka igcinwe kakuhle. . Amanyathelo kunye nendlela ziyafana namanyathelo (1)-(4) kwindlela yesi-2, umahluko kukuba akukho sixhobo sokushukumisa esinoboya obuphezulu esifunekayo, kwaye kuphela ezinye izixhobo zokushukumisa ezinamandla aneleyo okugcina i-hydroxyethyl fiber isasazeke ngokulinganayo kwisisombululo yiCan. Qhubeka uvuselela rhoqo de inyibilike ngokupheleleyo ibe sisisombululo esiqinileyo. Kufuneka kuqatshelwe ukuba iarhente yokubola kufuneka yongezwe kwi-paint mother liquor ngokukhawuleza.
Izinto ezi-4 ezifuna ingqwalasela xa kulungiswa i-hydroxyethyl cellulose mother liquor
Ekubeni i-hydroxyethyl cellulose ingumgubo ocutshungulwayo, kulula ukuyiphatha nokuyinyibilikisa emanzini logama nje kuthathelwa ingqalelo ezi zinto zilandelayo.
(1) Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka ixutywe rhoqo de isisombululo sibe sobala ngokupheleleyo kwaye sicace gca.
(2) Kufuneka ihluzwe kancinci kancinci kwi-tank yokuxuba, kwaye ungafaki ngokuthe ngqo inani elikhulu le-hydroxyethyl cellulose eyenze amaqhuma okanye iibhola kwi-tank yokuxuba.
(3) Ubushushu bamanzi kunye nexabiso le-pH emanzini zinobudlelwane obubalulekileyo nokunyibilika kwe-hydroxyethyl cellulose, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo.
(4) Musa ukongeza ezinye izinto ze-alkaline kumxube ngaphambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH emva kokumanzisa kunceda ukunyibilika.
(5) Kangangoko kunokwenzeka, yongeza i-anti-fungus kwangethuba.
(6) Xa usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, uxinzelelo lotywala oluvela kumama akufuneki lube ngaphezulu kwe-2.5-3% (ngokobunzima), kungenjalo utywala obuvela kumama buya kuba nzima ukuluphatha.
Izinto ezichaphazela i-viscosity yepeyinti ye-latex:
(1) Ngenxa yokuxukuxa kakhulu, umswakama ushushu kakhulu ngexesha lokusasazeka.
(2) Ubungakanani bezinye izinto zokutyebisa zendalo kwifomyula yepeyinti kunye nomlinganiselo wobungakanani kwi-hydroxyethyl cellulose.
(3) Ingaba ubungakanani be-surfactant kunye nobungakanani bamanzi asetyenzisiweyo kwifomula yepeyinti zifanelekile na.
(4) Xa kudityaniswa i-latex, ubungakanani bomxholo we-oxide njenge-catalyst eseleyo buxhomekeke kwinani le-oxide.
(5) Ukubola kwesinyibilikisi ziintsholongwane.
(6) Kwinkqubo yokwenza ipeyinti, ingaba ulandelelwano lwamanyathelo okongeza i-thickener lufanelekile na.
7 Okukhona amaqamza omoya amaninzi ehlala kwipeyinti, kokukhona i-viscosity iphakama
Ixesha lokuthumela: Matshi-04-2023