Iimveliso zeevithamini zonke zivela kwi-pulp yekotoni yendalo okanye kwi-pulp yomthi, eveliswa nge-etherification. Iimveliso ezahlukeneyo ze-cellulose zisebenzisa ii-agents ezahlukeneyo ze-etherifying. I-arhente ye-etherifying esetyenziswa kwi-hydroxyethyl cellulose (HEC) yi-ethylene oxide, kwaye i-arhente ye-etherifying esetyenziswa kwi-hydroxypropyl methylcellulose (HPMC) zezinye iintlobo zee-agents ze-etherifying. (i-chloromethane kunye ne-propylene oxide).
Kwipeyinti ye-szone yokwenyani kunye nepeyinti ye-latex, i-hydroxyethyl cellulose ingasetyenziswa njengesithambisi.
Ipeyinti yelitye lokwenyani kulula ukuyicoca ngenxa yobuninzi bayo obukhulu kunye nobuchule bayo obukhulu. Kubalulekile ukongeza i-thickener ukuze yonyuse i-viscosity yayo ukuze ihlangabezane ne-viscosity efunekayo yokutshiza ngexesha lokwakha, ukuphucula uzinzo lwayo lokugcina, kunye nokufezekisa amandla athile.
Ukuba ufuna ipeyinti yelitye yokwenyani ifikelele kumandla alungileyo, ukumelana namanzi kakuhle kunye nokumelana nemozulu, ukukhethwa kwezinto eziluhlaza kunye noyilo lwefomyula kubaluleke kakhulu.
Phantsi kweemeko eziqhelekileyo, ubungakanani be-emulsion esetyenziswa kwipeyinti yelitye yokwenyani esemgangathweni ophezulu buya kuba phezulu.
Umzekelo, kwitoni yepeyinti yelitye lokwenyani, kunokubakho i-300kg ye-emulsion ye-acrylic ecocekileyo kunye ne-650kg yesanti yelitye enemibala yendalo. Xa umxholo oqinileyo we-emulsion ungama-50%, umthamo we-300kg ye-emulsion emva kokomiswa ungama-150 eelitha, kwaye umthamo we-650kg yesanti ungama-228 eelitha. Oko kukuthi, i-PVC (uxinzelelo lwevolumu yepigment) yepeyinti yelitye lokwenyani yi-60% ngeli xesha, kuba amasuntswana esanti enemibala makhulu kwaye akaqhelekanga kwimo, kwaye phantsi kwemeko yokusasazwa kobukhulu besuntswana oluthile, ipeyinti yelitye lokwenyani eyomileyo inokuba kwi-CPVC (uxinzelelo olubalulekileyo lobunzima). Uxinzelelo lwevolumu yepigment) malunga. Ngokuphathelele i-thickener, ukuba ukhetha i-cellulose ene-viscosity efanelekileyo, ipeyinti yelitye lokwenyani inokwenza ifilimu yepeyinti epheleleyo nexineneyo ukuhlangabezana neemfuno ezintathu eziphambili zokusebenza kwepeyinti yelitye lokwenyani. Ukuba umxholo we-emulsion yepeyinti yelitye lokwenyani uphantsi, kuyacetyiswa ukusebenzisa i-cellulose ene-viscosity ephezulu njenge-thickener (njenge-viscosity eyi-100,000), ingakumbi emva kokuba ixabiso le-cellulose linyukile, nto leyo enokunciphisa ubungakanani be-cellulose esetyenzisiweyo kwaye yenze ilitye lokwenyani. Ukusebenza kwepeyinti kungcono.
Abanye abavelisi bepeyinti yamatye okwenyani abangabizi kakhulu basebenzisa i-hydroxypropyl methylcellulose endaweni ye-hydroxyethyl cellulose ngenxa yeendleko kunye nezinye izinto.
Xa kuthelekiswa neentlobo ezimbini ze-cellulose, i-hydroxyethyl cellulose inokugcinwa kwamanzi okungcono, ayizukulahlekelwa kukugcinwa kwamanzi ngenxa ye-gelatin kubushushu obuphezulu, kwaye inokumelana nokungunda okuthile. Ukuze kuqwalaselwe ukusebenza, kucetyiswa ukusebenzisa i-hydroxyethyl cellulose ene-viscosity eyi-100,000 njengesithambisi sopende welitye lokwenyani.
Ixesha lokuthumela: Epreli-28-2023