Indlela yokuxuba i-hydroxyethyl cellulose?

Ukuxuba i-hydroxyethyl cellulose (HEC) ngumsebenzi ofuna ulawulo oluchanekileyo kunye nobugcisa bobugcisa. I-HEC yimpahla ye-polymer e-soluble yamanzi esetyenziswa ngokubanzi kulwakhiwo, iingubo, amayeza, iikhemikhali zemihla ngemihla kunye namanye amashishini, kunye nokuqina, ukumiswa, ukudibanisa, ukuxutywa kwe-emulsification, ukwenza ifilimu, i-colloid yokukhusela kunye neminye imisebenzi.

1. Khetha indlela efanelekileyo yokunyibilikisa

I-HEC idla ngokuchithwa emanzini abandayo, kodwa inokuchithwa kwi-solvents eziphilayo ezifana ne-ethanol kunye nemixube yamanzi, i-ethylene glycol, njl. isetyenziswe kwiimfuno eziphezulu. Umgangatho wamanzi kufuneka ungabikho ukungcola, kwaye amanzi anzima kufuneka agwenywe ukuphepha ukuchaphazela ukunyibilika kunye nomgangatho wesisombululo.

2. Lawula ubushushu bamanzi

Ubushushu bamanzi bunempembelelo enkulu ekuchithweni kwe-HEC. Ngokuqhelekileyo, ubushushu bamanzi kufuneka bugcinwe phakathi kwama-20°C ukuya kuma-25°C. Ukuba ubushushu bamanzi buphezulu kakhulu, i-HEC ilula ukuyidibanisa kwaye yenza i-gel mass okunzima ukuyichitha; ukuba ubushushu bamanzi buphantsi kakhulu, izinga lokuchithwa liza kuncipha, lichaphazela ukusebenza kakuhle kokuxuba. Ngoko ke, qinisekisa ukuba ubushushu bamanzi buphakathi koluhlu olufanelekileyo ngaphambi kokuxuba.

3. Ukukhethwa kwezixhobo zokuxuba

Ukukhethwa kwezixhobo zokuxuba kuxhomekeke kwiimfuno ezithile zesicelo kunye nomlinganiselo wokuvelisa. Kwimisebenzi encinci okanye yebhubhoratri, i-blender okanye i-blender ephathwa ngesandla ingasetyenziswa. Ukuveliswa kwemveliso enkulu, i-mixer ye-shear ephezulu okanye i-disperser iyadingeka ukuqinisekisa ukuxuba okufanayo kunye nokuphepha ukubunjwa kweebhloko ze-gel. Isantya esishukumisayo sesixhobo kufuneka sibe siphakathi. Ukukhawuleza kuya kubangela ukuba umoya ungene kwisisombululo kwaye uvelise amaqamza; ukucotha kakhulu akunakusasaza i-HEC ngokufanelekileyo.

4. Indlela yokongeza ye-HEC

Ukuze ugweme ukubunjwa kwamaqela e-gel ngexesha lokuchithwa kwe-HEC, i-HEC kufuneka yongezwe ngokuthe ngcembe phantsi kokuvuselela. Amanyathelo athile ngala alandelayo:

Ukuvuselela kokuqala: Kwisixhobo esilungisiweyo sokunyibilikisa, qalisa i-agitator kwaye ushukumise ngesantya esiphakathi ukwenza i-vortex ezinzileyo kulwelo.

Ukongezwa ngokuthe ngcembe: Kancinci kwaye ngokulinganayo ufefe i-HEC powder kwi-vortex, ugweme ukongeza kakhulu ngexesha elinye ukukhusela i-agglomeration. Ukuba kunokwenzeka, sebenzisa isisefu okanye ifaneli ukulawula isantya sokongeza.

Ukuqhubela phambili ngokuqhubekayo: Emva kokuba i-HEC yongezwe ngokupheleleyo, qhubeka uvuselela ixesha elithile, ngokuqhelekileyo imizuzu engama-30 ukuya kwi-1 iyure, de kube isisombululo sibonakala ngokucacileyo kwaye akukho zincinci ezinganyibilikiyo.

5. Ukulawulwa kwexesha lokupheliswa

Ixesha lokuchithwa lixhomekeke kwibakala le-viscosity ye-HEC, ubushushu bendawo yokuchithwa kunye neemeko eziphazamisayo. I-HEC enebakala eliphezulu le-viscosity ifuna ixesha elide lokuchithwa. Ngokuqhelekileyo, kuthatha i-1 ukuya kwiiyure ze-2 ukuba i-HEC ichithwe ngokupheleleyo. Ukuba izixhobo eziphezulu zokucheba zisetyenzisiweyo, ixesha lokuchithwa linokufinyezwa, kodwa ukuvuselela ngokugqithiseleyo kufuneka kugwenywe ukukhusela umonakalo kwisakhiwo se-molecular ye-HEC.

6. Ukongezwa kwezinye izithako

Ngethuba lokuchithwa kwe-HEC, ezinye izithako zingadinga ukufakwa, njengezigcini, izilungisi ze-pH okanye ezinye izongezo ezisebenzayo. Ezi zithako kufuneka zongezwe ngokuthe ngcembe emva kokuba i-HEC ichithwe ngokupheleleyo, kwaye ukuvuselela kufuneka kuqhutyekwe ukuqinisekisa ukuhanjiswa okufanayo.

7. Ukugcinwa kwesisombululo

Emva kokuxuba, isisombululo se-HEC kufuneka sigcinwe kwisitya esivaliweyo ukukhusela ukukhuphuka kwamanzi kunye nokungcoliswa kwe-microbial. Indawo yokugcina kufuneka igcinwe icocekile, yomile kwaye kude nelanga elithe ngqo. Ixabiso le-pH yesisombululo kufuneka lilungiswe kuluhlu olufanelekileyo (ngokuqhelekileyo i-6-8) ukwandisa ixesha lokugcina.

8. Ukuhlolwa komgangatho

Emva kokuxuba, kucetyiswa ukuba kuqhutywe ukuhlolwa komgangatho kwisisombululo, ngokukodwa iiparitha zokuvavanya ezifana ne-viscosity, ukucaca kunye nexabiso le-pH yesisombululo ukuqinisekisa ukuba ihlangabezana neemfuno ezilindelekileyo. Ukuba kuyimfuneko, uvavanyo lwe-microbial lunokwenziwa kwakhona ukuze kuqinisekiswe ukucoceka kwesisombululo.

I-cellulose ye-Hydroxyethyl inokuxutywa ngokufanelekileyo ukufumana izisombululo eziphezulu ze-HEC ukuhlangabezana neemfuno zeendawo ezahlukeneyo zesicelo. Ngethuba lokusebenza, ikhonkco ngalinye lilawulwa ngokungqongqo ukuphepha ukungahambi kakuhle kunye nokuqinisekisa ukuxuba okugudileyo kunye nomgangatho wemveliso yokugqibela.