IHydroxyethyl cellulose (HEC) yintsika emhlophe okanye ekhanyayo, engenavumba, engeyotyhefu okanye eqinileyo.Yenziwe ngeelitha zomqhaphu ekrwada okanye ipulp esulungekileyo efakwe kwi-30% yesoda yolwelo lwe-caustic.Emva kwesiqingatha seyure, iyakhutshwa kwaye icinezelwe.Cinezela kude kube umlinganiselo wamanzi e-alkaline ufike kwi-1: 2.8, uze utyumle.Ilungiswa ngokusabela kwe-etherification kwaye yeye-non-ionic e-soluble cellulose ethers.Iselulosi yeHydroxyethyl yinto ebalulekileyo kwipeyinti yelatex.Makhe sigxininise kwindlela yokusebenzisa i-hydroxyethyl cellulose HEC kwipeyinti ye-latex kunye nezilumkiso.
1. Ukuxhotyiswa ngotywala bemama ukuze kusetyenziswe: sebenzisa kuqala i-hydroxyethyl cellulose HEC ukulungisa utywala oomama kunye noxinzelelo oluphezulu, kwaye udibanise kwimveliso.Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwimveliso egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo.Amanyathelo ale ndlela afana namanyathelo amaninzi kwindlela yesi-2;Umahluko kukuba akukho mfuneko ye-agitator ephezulu-shear, kwaye kuphela ezinye ii-agitators ezinamandla aneleyo okugcina i-cellulose ye-hydroxyethyl ngokufanayo ihlakazwe kwisisombululo inokuqhutyelwa ngaphandle kokumisa i-String de inyibilikiswe ngokupheleleyo kwisisombululo se-viscous.Nangona kunjalo, kufuneka kuqatshelwe ukuba i-fungicide kufuneka yongezwe kutywala benina ngokukhawuleza.
2. Yongeza ngokuthe ngqo ngexesha lokuvelisa: le ndlela iyona elula kwaye ithatha ixesha elifutshane.Yongeza amanzi acocekileyo kwi-emele enkulu ene-mixer yokucheba ephezulu.Qala ukushukumisa ngokuqhubekayo ngesantya esiphantsi kwaye kancinane uhluze i-hydroxyethyl cellulose kwisisombululo ngokulinganayo.Qhubeka uvuselela de onke amaqhekeza afakwe.Emva koko yongeza izigcini kunye nezongezelelo ezahlukeneyo.Ezinje ngebala, izixhobo zokusasaza, amanzi ammonia, njl. Gqugquzela de yonke i-hydroxyethyl cellulose HEC ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda ngokucacileyo) kwaye wongeza amanye amacandelo kwifomula yokusabela.
Ekubeni i-HEC ephathwe nge-hydroxyethyl cellulose ingumgubo okanye i-fibrous solid, xa ulungiselela utywala be-hydroxyethyl cellulose, nikela ingqalelo kwezi ngongoma zilandelayo:
(1) Xa usebenzisa i-high-viscosity hydroxyethyl cellulose HEC, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala oomama luya kuba nzima ukuphatha.
(2) Ngaphambi nangemva kokongeza i-hydroxyethyl cellulose HEC, kufuneka iqhutywe ngokuqhubekayo de isisombululo sibonakale ngokucacileyo kwaye sicace.
(3) Kangangoko kunokwenzeka, yongeza i-agent ye-antifungal kwangaphambili.
(4) Ubushushu bamanzi kunye nexabiso le-pH yamanzi zinobudlelwane obucacileyo nokuchithwa kwe-hydroxyethyl cellulose, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe.
(5) Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini.Ukunyusa i-pH emva kokumanzisa kuya kunceda ukunyibilika.
(6) Kufuneka ihluzwe kancinane kwitanki yokuxuba, kwaye ungafaki inani elikhulu okanye ngokuthe ngqo ukongeza i-hydroxyethyl cellulose eyenze amaqhuma kunye neebhola kwitanki yokuxuba.
Izinto ezibalulekileyo ezichaphazela i-viscosity yepeyinti ye-latex:
(1) Ukonakala kwe-thickener yi-microorganisms.
(2) Kwinkqubo yokwenza ipeyinti, ingaba ulandelelwano lwenyathelo lokongeza i-thickener lufanelekile.
(3) Ingaba ubungakanani be-activator yomhlaba kunye namanzi asetyenziswe kwifomula yepeyinti ifanelekile.
(4) Umlinganiselo womlinganiselo wezinye izityebi zendalo ukuya kwisixa se-hydroxyethyl cellulose kuyilo lwepeyinti.
(5) Xa i-latex yenziwe, umxholo wee-catalysts eziseleyo kunye nezinye ii-oxides.
(6) Iqondo lobushushu liphezulu kakhulu ngexesha lokusasazwa ngenxa yokuvuselela okugqithisileyo.
(7) Okukhona amaqamza omoya ehlala epeyintini, kokukhona i-viscosity iphezulu.
I-viscosity ye-hydroxyethyl cellulose HEC itshintsha kancane kwi-pH ye-2-12, kodwa i-viscosity iyancipha ngaphaya kolu luhlu.Ineempawu zokuqina, ukumisa, ukubopha, i-emulsifying, ukusabalalisa, ukugcina umswakama kunye nokukhusela i-colloid.Izisombululo kwiindidi ezahlukeneyo ze-viscosity zinokulungiswa.Ukungazinzi phantsi kobushushu obuqhelekileyo kunye noxinzelelo, kuphephe ukufuma, ukushisa, kunye nobushushu obuphezulu, kwaye bunokunyibilika kwetyuwa ngokugqwesileyo kwi-dielectrics, kwaye isisombululo sayo esinamanzi sivumelekile ukuba siqulathe ukugcwala okuphezulu kweetyuwa kwaye sihlale sizinzile.
Ixesha lokuposa: Apr-01-2023