Indlela yokusetyenziswa kwe-hydroxyethyl cellulose kwipende ye-latex
1. I-Hydroxyethyl cellulose ene-porridge efana ne-phenology: ngenxa yokuba i-hydroxyethyl cellulose ayinyibiliki ngokulula kwi-solvents ye-organic, ezinye i-solvents eziphilayo zingasetyenziselwa ukuxhobisa isidudu.Amanzi omkhenkce nawo asisinyibilikisi esibi, ngoko ke asoloko esetyenziswa kwisidudu esinolwelo oluphilayo.I-hydroxyethyl cellulose yefom ye-congee inokongezwa ngokuthe ngqo kwipeyinti ye-emulsii.I-Hydroxyethyl cellulose iye yahlutha kwifom yesidudu.Xa ifakwe kwipeyinti, iyancipha ngokukhawuleza kwaye iyancipha.Qhubeka uvuselela de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye inyibilike.Isidudu esiqhelekileyo senziwa ngokuxuba iinxalenye ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose.Emva kwemizuzu emi-5-30, i-hydroxyethyl cellulose i-hydrolyzes kwaye ibonakale iphakama.(Kucetyiswa ukuba ukufuma kwamanzi ehlotyeni kuphezulu kakhulu ukuba kungasetyenziselwa isidudu.)
2. Yongeza i-hydroxyethyl cellulose ngokuthe ngqo kwi-pigment yokugaya: le ndlela ilula kwaye ixesha lifutshane.Iindlela ezineenkcukacha zezi zilandelayo:
(1) Yongeza amanzi acocekileyo afanelekileyo kwi-VAT ephezulu kufuneka inqunyulwe i-agitator (ngokubanzi, izongezo zokwenza ifilim kunye neearhente zokumanzisa zongezwa ngeli xesha)
(2) Qalisa ukuvuselela ngesantya esiphantsi ngaphandle kokuyeka kwaye kancinane wongeze i-hydroxyethyl cellulose ngokulinganayo
(3) Qhubeka uvuselela de zonke iinqununu zihlakazwe ngokulinganayo kwaye zixutywe
(4) Yongeza i-mildew inhibitor kwaye ulungise ixabiso le-PH
(5) Gxuma de yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu), uze ungeze amanye amacandelo kwifomula, kwaye ugaye de ibe yipeyinti.
I-3 i-hydroxyethyl cellulose kunye nolwelo lukamama olulindileyo: le ndlela ixhotyiswe kuqala ngoxininiso oluphezulu lolwelo lukamama, uze udibanise ipeyinti ye-latex, inzuzo yale ndlela iguquguqukayo, inokongeza ngokuthe ngqo ipeyinti imveliso egqityiweyo, kodwa ukugcina okufanelekileyo.Amanyathelo kunye neendlela zifana namanyathelo (1) - (4) kwi-Method 2, ngaphandle kokuba i-agitator yokusika ephezulu ayifuni kwaye kuphela ama-aggers anamandla aneleyo okugcina iifayili ze-hydroxyethyl zihlakazwe ngokulinganayo kwisisombululo zisetyenzisiweyo.Qhubeka uvuselela de inyibilike ngokupheleleyo kwisisombululo esingqindilili.Qaphela ukuba: i-agent ye-antimidew kufuneka yongezwe ngokukhawuleza kutywala be-mama yepeyinti.
4 Imiba efuna ingqwalasela xa kuxhotyiswa utywala lukamama lwe-hydroxyethyl cellulose
Ekubeni i-hydroxyethyl cellulose i-powder granular ephathwayo, kulula ukuyiphatha kunye nokunyibilika emanzini kunye nezi zilumkiso zilandelayo.
(1) Ngaphambi nasemva kokongeza i-hydroxyethyl cellulose, kufuneka iqhubeke ivuselela, de isisombululo sicace ngokupheleleyo kwaye sicace.
(2) Kuyimfuneko ukuhluza i-cellulose ye-hydroxyethyl kwitanki eshukumisayo kancinane.Musa ukuyongeza ngobuninzi okanye ngokuthe ngqo kwi-tank yokuvuselela.
(3) Ukunyibilika kwe-hydroxyethyl cellulose ngokucacileyo kuhambelana nobushushu bamanzi kunye nexabiso le-pH yamanzi, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe kuyo.
(4) Musa ukongeza izinto ezisisiseko kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini.Ukunyusa i-pH emva kokumanzisa kunceda ukunyibilika.
(5) Ngokusemandleni, ukongezwa kwangaphambili kwe-mildew inhibitor.
(6) Xa usebenzisa i-viscosity ephezulu ye-hydroxyethyl cellulose, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala oomama kunzima ukusebenza.
Izinto ezichaphazela i-viscosity yepeyinti ye-latex:
(1) Ngenxa yokuvuselela okugqithisileyo kunye nokufuma okugqithisileyo xa usasazwa.
(2) ubungakanani bezinye izityebi zendalo kwifomula yepeyinti kunye nomlinganiselo wesixa kunye ne-hydroxyethyl cellulose.)
(3) ubungakanani be-activator yomhlaba kunye namanzi kwifomula yepeyinti iyahambelana.
(I-4 kwi-synthesis ye-latex, i-residual catalyst oxide content yenani.
Ukhukuliseko lweMicrobial lwe-thickener.
6 kwinkqubo yokwenza ipeyinti, umyalelo wamanyathelo okongeza i-thickener ifanelekile.
Okukhona amaqamza omoya ashiyekileyo kwipeyinti, kokukhona i-viscosity iphezulu
Ixesha lokuposa: Jun-02-2022