Iselulosi yeHydroxyethylisetyenziswa kakhulu kwipeyinti yelatex, ipeyinti yeemulsion & necoatings, indlela yokusebenzisa iHydroxyethyl cellulose kwipeyinti yelatex?
1. Yongeza ngokuthe ngqo kwi-pigment e-abrasive
Le ndlela yeyona ilula kwaye ithatha ixesha elifutshane.Amanyathelo aneenkcukacha ngolu hlobo lulandelayo:
(1) Yongeza amanzi ahlambulukileyo afanelekileyo kwi-vat ye-agitator ephezulu yokusika (ngokubanzi, i-ethylene glycol, i-agent emanzi kunye ne-agent-forming agent yongezwa ngeli xesha)
(2) Qalisa ukuvuselela ngesantya esiphantsi kwaye kancinane wongeze i-hydroxyethyl cellulose
(3) qhubeka ushukumisa de onke amasuntswana abe manzi
(4) Ukongeza i-mildew inhibitor, i-pH adjuster, njl.
(5)Gxuma de yonke i-cellulose ye-hydroxyethylichithwa ngokupheleleyo (i-viscosity yesisombululo yanda kakhulu) ngaphambi kokuba ungeze amanye amacandelo ekuqulunqweni kunye nokugaya kuze kube yilapho i-lacquer yenziwe.
2. exhotyiswe ngotywala benina
Le ndlela ixhotyiswe kuqala ngoxinaniso oluphezulu lotywala lukamama kwaye yongezwa kwipeyinti yelatex.Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwipeyinti egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo.Amanyathelo kunye neendlela zifana namanyathelo (1) - (4) kwi-Method 1, ngaphandle kokuba i-stirrer ayifuni ukuba ibe phezulu, kwaye kuphela i-stirrer enamandla eyaneleyo yokugcina i-hydroxyethyl fibers ihlakazwe ngokufanayo kwisisombululo isetyenziswa. .unako.Qhubeka uvuselela de unyibilike ngokupheleleyo kwisisombululo se-viscous.Kufuneka kuqatshelwe ukuba i-mold inhibitor kufuneka yongezwe kutywala bemama ngokukhawuleza.
3. ngesidudu
Ekubeni i-solvent ye-organic i-solvent engafanelekanga ye-hydroxyethyl cellulose, ezi zinyibilikisi zendalo zingasetyenziselwa ukubonelela nge-porridge.Ezona zinyibiliki zisetyenziswa ngokuqhelekileyo njengeethylene glycol, propylene glycol, kunye nefilmforms (ezifana nehexane okanye diethylene glycol butyl acetate), amanzi omkhenkce nawo asisinyibiliki esibi, ngoko ke amanzi omkhenkce asetyenziswa rhoqo kunye nolwelo oluphilayo. isidudu.I-porridge efana ne-hydroxyethyl cellulose inokongezwa ngokuthe ngqo kwipeyinti.I-Hydroxyethyl cellulose ifakwe ngokwaneleyo kwisidudu.Xa ifakwe kwipeyinti, iyancibilika ngokukhawuleza kwaye iyancipha.Emva kokongezwa, kuyimfuneko ukuba uqhube ngokuqhubekayo de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye i-homogeneous.Ngokuqhelekileyo, i-porridge ixutywe kunye nenxalenye ye-solvent ye-organic okanye amanzi e-ice kunye nenxalenye ye-hydroxyethyl cellulose.Emva kwemizuzu emi-5 ukuya kwengama-30, i-hydroxyethyl cellulose yenziwa i-hydrolyzed kwaye inyuke ngokumangalisayo.Ngokuqhelekileyo, ukufuma kwamanzi ehlotyeni kuphezulu kakhulu kwaye akufanele kusetyenziswe isidudu.
4. Amanyathelo okhuseleko xa usebenzisa utywala lukamama lwe-hydroxyethyl cellulose
Ukusukela ukuba i-hydroxyethyl cellulose(HEC)yigranule ephathwayo, kulula ukuyiphatha kunye nokunyibilika emanzini ukuba nje le miba ilandelayo iphawulwe.
(1) Ngaphambi nangemva kokongezwa kwe-hydroxyethylcellulose, ukuvuselela kufuneka kuqhutywe de isisombululo sicace ngokupheleleyo kwaye sicace.
(2) Kufuneka ihluzwe kancinane kwitanki yokuxuba.Musa ukongeza i-cellulose ye-hydroxyethyl eye yenziwa kwibhloko kunye nokwakheka kwe-spherical ngqo kwitanki yokuxuba.
(3) Ubushushu bamanzi kunye nexabiso le-pH emanzini linobudlelwane obubalulekileyo kunye nokuchithwa kwe-hydroxyethyl cellulose, kwaye kufuneka kuthathelwe ingqalelo ekhethekileyo.
(4) Musa ukongeza izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose umanziswe ngamanzi.Ukunyusa i-pH emva kokumanzisa kunceda ukunyibilika.
(5) Yongeza i-mold inhibitors ngokukhawuleza.
(6) Xa usebenzisa i-viscosity ephezulu ye-hydroxyethyl cellulose, uxinaniso lotywala lomama akufanele lube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala oomama kunzima ukuphatha.
Ixesha lokuposa: Jan-03-2019