I-Hydroxyethyl celluloseisetshenziswa kabanzi kupende we-latex, upende we-emulsion & coatings, isetshenziswa kanjani i-Hydroxyethyl cellulose kupende we-latex?
1. Engeza ngqo ku-pigment e-abrasive
Le ndlela ilula futhi ithatha isikhathi esifushane.Izinyathelo ezinemininingwane zimi kanje:
(1) Faka amanzi ahlanzekile afanelekile ku-vat ye-agitator esika kakhulu (ngokujwayelekile, i-ethylene glycol, i-ejenti yokumanzisa kanye ne-ejenti eyenza ifilimu iyengezwa ngalesi sikhathi)
(2) Qala ukunyakazisa ngesivinini esiphansi bese wengeza kancane i-hydroxyethyl cellulose
(3) qhubeka ugoqoza kuze kube yilapho zonke izinhlayiya sezimanzi
(4) Ukwengeza i-mildew inhibitor, isilungisi se-pH, njll.
(5)Hlanganisa kuze kube yilapho yonke i-hydroxyethyl celluloseichitheka ngokuphelele (i-viscosity yesisombululo yanda kakhulu) ngaphambi kokwengeza ezinye izingxenye ekubunjweni nasekugayeni kuze kube yilapho i-lacquer ikhiwa.
2. ihlome ngotshwala kamama
Le ndlela iqala ifakwe uketshezi oluningi lukamama bese yengezwa kupende we-latex.Inzuzo yale ndlela yukuthi inokuguquguquka okukhulu futhi ingafakwa ngokuqondile kupende ophelile, kodwa kufanele igcinwe kahle.Izinyathelo nezindlela ziyafana nezinyathelo (1)-(4) kuNdlela yoku-1, ngaphandle kokuthi isivunguvungu asidingeki ukuba sibe phezulu, futhi i-stirrer kuphela enamandla anele ukugcina imicu ye-hydroxyethyl ihlakazeke ngokufanayo esixazululweni isetshenziswa. .kungaba.Qhubeka ugqugquzela kuze kube yilapho uncibilika ngokuphelele kwisixazululo se-viscous.Kumele kuqashelwe ukuthi i-mold inhibitor kufanele yengezwe ku-mama yotshwala ngokushesha ngangokunokwenzeka.
3. ngephalishi
Njengoba i-solvent yemvelo iyi-solvent empofu ye-hydroxyethyl cellulose, lezi zinyibilikisi eziphilayo zingasetshenziswa ukunikeza iphalishi.Izincibilikisi eziphilayo ezisetshenziswa kakhulu njenge-ethylene glycol, i-propylene glycol, nama-filmforms (njenge-hexane noma i-diethylene glycol butyl acetate), amanzi e-ice nawo awasincibilikisi esimpofu, ngakho-ke amanzi e-ice avame ukusetshenziswa kanye noketshezi lwemvelo Afakwe iphalishi.I-hydroxyethyl cellulose efana nephalishi ingafakwa ngokuqondile kupende.I-Hydroxyethyl cellulose ifakwe ngokwanele ephalishini.Uma yengezwe kupende, iyancibilika ngokushesha futhi ishube.Ngemuva kokwengeza, kuyadingeka ukugqugquzela ngokuqhubekayo kuze kube yilapho i-hydroxyethyl cellulose ichitheka ngokuphelele futhi i-homogeneous.Ngokuvamile, iphalishi lixutshwa nengxenye ye-organic solvent noma amanzi eqhwa kanye nengxenye ye-hydroxyethyl cellulose.Ngemva kwemizuzu emi-5 ukuya kwengama-30, i-hydroxyethyl cellulose ikhishwa nge-hydrolyzed futhi inyuke ngokuphawulekayo.Ngokuvamile, umswakama wamanzi ehlobo uphezulu kakhulu futhi akufanele usetshenziselwe iphalishi.
4. Izinyathelo zokuqapha lapho usebenzisa utshwala bomama be-hydroxyethyl cellulose
Njengoba i-hydroxyethyl cellulose(HEC)i-granule ephathwayo, kulula ukuyiphatha futhi incibilike emanzini inqobo nje uma lezi zindaba ezilandelayo ziphawulwa.
(1) Ngaphambi nangemva kokwengezwa kwe-hydroxyethylcellulose, ukugoqa kufanele kuqhutshekwe kuze kube yilapho isisombululo sesicacile futhi sicacile.
(2) Kumelwe ihlungwe kancane kancane ethangini lokuxuba.Ungafaki i-hydroxyethyl cellulose eyakheke yaba yibhlokhi kanye nesimo esiyindilinga ngqo ethangini lokuxuba.
(3) Izinga lokushisa lamanzi kanye nenani le-pH emanzini kunobudlelwane obubalulekile nokuqedwa kwe-hydroxyethyl cellulose, futhi kufanele kuqashelwe ngokukhethekile.
(4) Ungangezi ezinye izinto ezine-alkali engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder imanziswe ngamanzi.Ukwandisa i-pH ngemva kokucwiliswa kusiza ukuncibilika.
(5) Faka ama-mold inhibitors ngokushesha ngangokunokwenzeka.
(6) Lapho usebenzisa i-viscosity ephezulu ye-hydroxyethyl cellulose, ukugcwala kotshwala kamama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala bukamama kunzima ukubuphatha.
Isikhathi sokuthumela: Jan-03-2019