Indlela yokusebenzisa i-hydroxyethyl cellulose kwipeyinti ye-latex
1. I-Hydroxyethyl cellulosengeporridge efana ne-phenology: kuba i-hydroxyethyl cellulose ayinyibiliki lula kwi-organic solvents, ezinye izinyibilikisi ze-organic zingasetyenziselwa ukuxhobisa iporridge. Amanzi omkhenkce nawo ayisombululi esibi, ngoko ke ahlala esetyenziswa kwiporridge ene-organic liquids. I-hydroxyethyl cellulose yohlobo lwe-congee inokongezwa ngqo kwipeyinti ye-emulsii. I-Hydroxyethyl cellulose igcwele kwi-porridge. Xa yongezwa kwipeyinti, iyanyibilika ngokukhawuleza kwaye ibe nkulu. Qhubeka uvuselela de i-hydroxyethyl cellulose isasazeke ngokupheleleyo kwaye ichitheke. Iporridge eqhelekileyo yenziwa ngokuxuba iindawo ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose. Emva kwemizuzu emi-5-30, i-hydroxyethyl cellulose iyanyibilika kwaye ibonakale iphakama. (Kucetyiswa ukuba umswakama wamanzi ehlotyeni uphezulu kakhulu ukuba ungasetyenziselwa iporridge.)
2. Yongeza i-hydroxyethyl cellulose ngqo kwi-pigment yokusila: le ndlela ilula kwaye ixesha lifutshane. Iindlela ezineenkcukacha zezi zilandelayo:
(1) Yongeza amanzi acocekileyo afanelekileyo kwi-VAT ephezulu kufuneka inqumle i-agitator (ngokubanzi, izongezo zokwenza ifilimu kunye nezinto ezimanzisa zongezwa ngeli xesha)
(2) Qalisa ukuxukuxa ngesantya esiphantsi ngaphandle kokuma uze wongeze kancinci i-hydroxyethyl cellulose ngokulinganayo
(3) Qhubeka uvuselela ude onke amasuntswana asasazeke ngokulinganayo aze afunxwe
(4) Yongeza i-mildew inhibitor kwaye ulungise ixabiso le-PH
(5) Xuba de yonke i-hydroxyethyl cellulose ichitheke ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu), uze wongeze ezinye izinto kwifomyula, uze uyigaye ide ibe yipeyinti.
3 i-hydroxyethyl cellulose enolwelo lukamama olulindileyo: le ndlela iqale ixhotyiswe ngoxinzelelo oluphezulu lolwelo lukamama, uze emva koko wongeze ipeyinti yelatex, inzuzo yale ndlela iguquguquka ngakumbi, inokongeza ngokuthe ngqo iimveliso ezigqityiweyo zepeyinti, kodwa kwindawo yokugcina efanelekileyo. Amanyathelo kunye neendlela ziyafana namanyathelo (1) – (4) kwiNdlela yesi-2, ngaphandle kokuba i-agitator yokusika ephezulu ayifuneki kwaye kusetyenziswa kuphela ezinye ii-aggers ezinamandla aneleyo okugcina iifayibha ze-hydroxyethyl zisasazeke ngokulinganayo kwisisombululo. Qhubeka uvuselela ide inyibilike ngokupheleleyo ibe sisisombululo esityebileyo. Qaphela ukuba: iarhente yokulwa nokungunda kufuneka yongezwe ngokukhawuleza kwipeyinti yolwelo lukamama.
Izinto ezi-4 ezifuna ingqwalasela xa kuxhotyiswa i-hydroxyethyl cellulose mother liquor
Ekubeni i-hydroxyethyl cellulose ingumgubo ocoliweyo, kulula ukuyiphatha nokuyinyibilikisa emanzini ngokulandela la manyathelo alandelayo okhuseleko.
(1) Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka iqhubeke ivuselela, ide isisombululo sibe sobala ngokupheleleyo kwaye sicace.
(2) Kuyimfuneko ukuhluza i-hydroxyethyl cellulose kwi-tank yokuxuba kancinci. Musa ukuyifaka ngobuninzi okanye ngokuthe ngqo kwi-tank yokuxuba.
(3) Ukunyibilika kwe-hydroxyethyl cellulose ngokucacileyo kunxulumene nobushushu bamanzi kunye nexabiso le-pH yamanzi, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo kuyo.
(4) Musa ukongeza ezinye izinto ezisisiseko kumxube ngaphambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH emva kokuyifaka emanzini kunceda ukunyibilika.
(5) Kangangoko kunokwenzeka, kongezwa kwangoko isithinteli sokubola.
(6) Xa usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, uxinzelelo lotywala obuvela kumama akufuneki lube ngaphezulu kwe-2.5-3% (ngokobunzima), kungenjalo utywala obuvela kumama kunzima ukulusebenzisa.
Izinto ezichaphazela i-viscosity yepeyinti ye-latex:
(1) Ngenxa yokuxukuxa kakhulu kunye nokufuma okugqithisileyo xa kusasazeka.
(2) ubungakanani bezinye izinto zokutyebisa zendalo kwifomula yepeyinti kunye nomlinganiselo wobungakanani obunayoi-hydroxyethyl cellulose.)
(3) ubungakanani bomphezulu we-activator kunye namanzi kwifomula yepeyinti buyafana.
(4 ekuhlanganisweni kwe-latex, umxholo we-catalyst oxide oseleyo wenani.
Ukuguguleka kwe-microbial ye-thickener.
6 kwinkqubo yokwenza ipeyinti, ulandelelwano lwamanyathelo okongeza i-thickener lufanelekile.
Okukhona amaqamza omoya ehlala ekhona kwipeyinti, kokukhona i-viscosity iphakama.
Ixesha leposi: Epreli-25-2024