I-Dispersing hydroxyethyl cellulose (HEC) ngumsebenzi ofuna ukuba kulandelwe amanyathelo athile, ngakumbi kwimidiya yamanzi. Ukusabalalisa okuchanekileyo kunye namanyathelo okutshatyalaliswa kunokuqinisekisa ukusetyenziswa kwayo. I-Hydroxyethyl cellulose isetyenziswa ngokubanzi kwiingubo, izinto zokuncamathelisa, izithambiso, amasimi e-oyile kunye namanye amasimi ngenxa yokuqina kwayo, ukuzinzisa, ukwenza ifilimu, ukuthambisa kunye neminye imisebenzi.
Intshayelelo ngeHydroxyethyl Cellulose
I-Hydroxyethyl cellulose yi-ether ye-cellulose e-soluble engekho i-ionic emanzini eyenziwe ngokuguqulwa kweekhemikhali ze-cellulose yendalo. Inokunyibilika okugqwesileyo kunye neziphumo ezityebileyo, kwaye inokwenza i-transparent, viscous aqueous solution. I-HEC ikwanayo nokunyamezela kwamanzi etyuwa, ngoko ke ifanelekile ngokukodwa kwiindawo ezihlala emanzini olwandle okanye iinkqubo ezinetyuwa. Ngexesha elifanayo, linokuhlala lizinzile kuluhlu olubanzi lwe-pH kwaye aluchatshazelwa yi-asidi kunye neendawo ze-alkali.
Umgaqo wokusasazwa kwe-hydroxyethyl cellulose
Emanzini, inkqubo yokusasazwa kwe-hydroxyethyl cellulose ibandakanya amanyathelo amabini aphambili: ukusasazeka okumanzi kunye nokuchithwa okupheleleyo.
Ukusasazwa okumanzi: Le yinkqubo yokwenza amasuntswana e-hydroxyethyl cellulose asasazwe ngokulinganayo emanzini. Ukuba i-HEC yongezwa ngokuthe ngqo emanzini, iya kutsala amanzi ngokukhawuleza kwaye yenze i-clumps encangathi phezu komhlaba, ethintela ukuchithwa okuqhubekayo. Ngoko ke, ngexesha lenkqubo yokusabalalisa, ukubunjwa kwee-clumps ezinjalo kufuneka kugwenywe kangangoko kunokwenzeka.
Ukunyibilika ngokupheleleyo: Emva kokumanzisa, iimolekyuli zeselulosi ngokuthe ngcembe zisasazeka emanzini ukuze zenze isisombululo esifanayo. Ngokuqhelekileyo, i-HEC inyibilika kancinci kwaye inokuthatha iiyure ezininzi okanye nangaphezulu, kuxhomekeke kubushushu bamanzi, iimeko ezishukumisayo kunye nobungakanani besuntswana leselulosi.
Amanyathelo okusasazwa kwe-hydroxyethyl cellulose
Ukuqinisekisa ukuba i-hydroxyethyl cellulose inokusasazwa ngokulinganayo, oku kulandelayo ngamanyathelo okusasazwa aqhelekileyo:
1. Khetha ubushushu bamanzi obufanelekileyo
Ubushushu bamanzi yinto ebalulekileyo echaphazela ukusasazeka kunye nokuchithwa kwe-hydroxyethyl cellulose. Ngokuqhelekileyo, amanzi abandayo okanye amanzi obushushu begumbi yeyona ndawo ifanelekileyo yonyibiliko. Amanzi afudumeleyo (malunga ne-30-40 ° C) anceda ukukhawuleza ukuchithwa, kodwa ukushisa kwamanzi aphezulu kakhulu (ngaphezu kwama-50 ° C) kunokubangela ukuba i-clumps yenze ngexesha lenkqubo yokuchithwa, eya kuchaphazela umphumo wokusabalalisa.
2. Unyango lokumanzisa kwangaphambili
Iselulosi yeHydroxyethyl ithande ukwenza izigaqa ngokukhawuleza emanzini, ngoko ke unyango lokumanzisa kwangaphambili luyindlela esebenzayo yokusasaza. Ngokuqala ukuxuba i-HEC kunye ne-soluble water-soluble organic solvent (efana ne-ethanol, i-propylene glycol, njl.), i-HEC ifakwe ngokufanayo ukuze ithintele ukuba ithathe amanzi ngokuthe ngqo kwaye yenze izibonda. Le ndlela inokuphucula ngokubonakalayo ukusebenza kakuhle kokusasazwa okulandelayo.
3. Lawula isantya sokongeza
Xa usasaza i-cellulose ye-hydroxyethyl, umgubo kufuneka ugalelwe emanzini kancinane kwaye ngokulinganayo ngelixa uvuselela. Isantya se-stirrer akufanele sibe phezulu kakhulu ukukhusela ugwebu olugqithisileyo. Ukuba isantya sokongeza sikhawuleza kakhulu, i-HEC ayinakuchithwa ngokupheleleyo, yenze i-micelles engalinganiyo, eya kuchaphazela inkqubo yokuchithwa okulandelayo.
4. Ukuvuselela
Ukuvuselela lelinye lawona manyathelo abalulekileyo kwinkqubo yokusasazwa. Kucetyiswa ukuba kusetyenziswe i-speed-speed stirrer ukushukumisa ngokuqhubekayo ukuqinisekisa ukuba i-hydroxyethyl cellulose ingasasazwa ngokulinganayo kuyo yonke inkqubo yolwelo. Ukuvuselela isantya esiphezulu kunokubangela ukuba i-HEC idibanise, ikhulise ixesha lokuchithwa, kwaye ivelise amaqamza, echaphazela ukucaca kwesisombululo. Ngokuqhelekileyo, ixesha lokuvuselela kufuneka lilawulwe phakathi kwemizuzu engama-30 kunye neeyure eziliqela, kuxhomekeka kwisixhobo esisetyenzisiweyo kunye nobushushu bamanzi.
5. Yongeza i-electrolytes okanye ulungise i-pH
Ngamanye amaxesha, inkqubo yokuchithwa kwe-hydroxyethyl cellulose inokukhawuleziswa ngokudibanisa inani elifanelekileyo le-electrolytes (njengeetyuwa) okanye ukulungelelanisa ixabiso le-pH. Le ndlela ifaneleke ngokukodwa kwizicelo ezineemfuno eziphezulu zesantya sokuchithwa. Nangona kunjalo, isixa se-electrolyte okanye i-pH kufuneka ilungiswe ngokucophelela ukuphepha ukuchaphazela ukusebenza kwe-HEC.
Iingxaki eziqhelekileyo kunye neMiqathango yokuNqanda
I-Agglomeration: Eyona ngxaki ixhaphakileyo ye-HEC yi-agglomeration ngexesha lenkqubo yokuchithwa, okukhokelela ekupheliseni okungaphelelanga. Ukuze ugweme oku, ungasebenzisa indlela yangaphambili yokumanzisa okanye udibanise i-HEC kunye nezinye izinto ezinomgubo (ezifana nokuzalisa, ii-pigments, njl.) uze udibanise emanzini.
Izinga lokupheliswa okucothayo: Ukuba isantya sonyibiliko sicotha, unokukhawulezisa ukunyibilika ngokunyusa ukusebenza kakuhle okanye ngokufanelekileyo ukwandisa ubushushu bamanzi. Ngexesha elifanayo, unokuzama ukusebenzisa i-HEC ekhawulezayo, eye yaphathwa ngokukodwa ukuchithwa ngokukhawuleza ngexesha elifutshane.
Ingxaki ye-Bubble: Ama-Bubbles aveliswa ngokulula ngexesha lokuvuselela, echaphazela ukucaca kunye nokulinganisa kwe-viscosity yesisombululo. Kule meko, ukunciphisa isantya esishukumisayo okanye ukongeza inani elifanelekileyo le-ejenti ye-defoaming inokunciphisa ngokufanelekileyo ukubunjwa kweebhubhu.
Izilumkiso zokusetyenziswa kwe-hydroxyethyl cellulose
Kwizicelo eziphathekayo, uhlobo olufanelekileyo kunye nendlela yokongeza ye-hydroxyethyl cellulose kufuneka ikhethwe ngokweemfuno zeenkqubo ezahlukeneyo. Ngokomzekelo, kwishishini leengubo, i-hydroxyethyl cellulose ayisebenzisi nje kuphela njenge-thickener, kodwa inokuphucula i-rheology, ifilimu yokwenza ifilimu kunye nokuzinza kokugcinwa kwengubo. Kwishishini le-oilfield, ukuxhathisa ityuwa ye-HEC kubaluleke kakhulu, ngoko ke ukhetho lufuna ukulungiswa ngokwemiqathango ye-downhole.
Ukusasaza i-cellulose ye-hydroxyethyl ngumsebenzi wobugcisa obuphezulu, kwaye kuyimfuneko ukukhetha indlela efanelekileyo yokusabalalisa ngokweemeko ezahlukeneyo zokusetyenziswa. Ngokulawula ubushushu bamanzi, ukumanzisa okufanelekileyo kwangaphambili, ukuvuselela okufanelekileyo kunye nokongeza izongezo ezifanelekileyo, kunokuqinisekisa ukuba i-hydroxyethyl cellulose ichithwa ngokulinganayo kwaye ichithwe ngokupheleleyo emanzini, ngaloo ndlela yandisa imisebenzi yayo yokuqina kunye nokuzinzisa.
Ixesha lokuposa: Oct-23-2024