Ulwahlulo lweEtere yeSelulosi
I-ether ye-cellulose ligama eliqhelekileyo loluhlu lweemveliso eziveliswa yi-reaction ye-alkali cellulose kunye ne-etherifying agent phantsi kweemeko ezithile. Xa i-cellulose ye-alkali ithathelwa indawo yi-etherifying agents ezahlukeneyo, ii-ethers ze-cellulose ezahlukeneyo ziya kufumaneka.
Ngokweempawu ze-ionization yezinto ezithatha indawo, i-cellulose ethers inokwahlulwa ibe ngamacandelo amabini: ionic (efana ne-carboxymethyl cellulose) kunye ne-nonionic (efana ne-methyl cellulose).
Ngokohlobo lwe-substituent, i-cellulose ether inokohlulwa ibe yi-monoether (efana ne-methyl cellulose) kunye ne-ether exutywe (njenge-hydroxypropyl methyl cellulose).
Ngokwe-solubility eyahlukeneyo, inokwahlulwa ibe yi-solubility yamanzi (efana ne-hydroxyethyl cellulose) kunye ne-organic solvent solubility (efana ne-ethyl cellulose).
I-ethers ye-cellulose e-soluble yamanzi esetyenziswa kwii-mortars ezinomxube owomileyo zohlulwe zibe zi-ethers ze-cellulose ezichithwa ngoko nangoko kunye nokunyangwa kokulibaziseka-ukuchithwa kwe-cellulose.
Ziphi iiyantlukwano zabo? Kwaye indlela yokuyiqwalasela kakuhle kwisisombululo se-2% samanzi sokuvavanya i-viscosity?
Yintoni unyango olungaphezulu?
Isiphumo se-cellulose ether?
Ekuqaleni
Ukunyangwa komphezulu yindlela yokwenza i-artificially ye-surface layer phezu kwesiseko sesiseko esinomatshini, izinto eziphathekayo kunye neekhemikhali ezahlukeneyo kwisiseko.
Injongo yonyango lomphezulu we-ether ye-cellulose kukulibazisa ixesha lokudibanisa i-ether ye-cellulose kunye namanzi ukuhlangabezana neemfuno zokuqina okucothayo kwezinye iimbumba zepeyinti, kunye nokwandisa ukuxhathisa ukubola kwe-ether ye-cellulose kunye nokuphucula ukuzinza kokugcina.
Umahluko xa amanzi abandayo elungiselelwe nge-2% yesisombululo esinamanzi:
I-ether ye-cellulose ephathwayo inokusasazeka ngokukhawuleza emanzini abandayo kwaye akukho lula ukuhlanganisana ngenxa ye-viscosities yayo ecothayo;
I-Cellulose ether ngaphandle konyango lomphezulu, ngenxa ye-viscosities yayo ekhawulezayo, iya kubonakala ngaphambi kokuba ihlakazwe ngokupheleleyo emanzini abandayo, kwaye ijwayele ukuba i-agglomeration.
Uyiqwalasela njani i-ether yeselulosi enganyangekiyo ebusweni?
1. Okokuqala faka inani elithile le-ether ye-cellulose engafakwanga ebusweni;
2. Emva koko wongeza amanzi atshisayo malunga ne-80 degrees Celsius, ubunzima buyisinye kwisithathu somthamo wamanzi afunekayo, ukwenzela ukuba ikwazi ukuvuvukala ngokupheleleyo kwaye ihlakazeke;
3. Emva koko, uthele ngokuthe chu emanzini abandayo, ubunzima bumbini kwisithathu samanzi aseleyo afunekayo, qhubeka uvuselela ukwenza unamathele ngokukhawuleza, kwaye akuyi kubakho i-agglomeration;
4. Ekugqibeleni, phantsi komqathango wobunzima obulinganayo, yibeke kwindawo yokuhlambela amanzi ashushu rhoqo de izinga lokushisa liyehla ukuya kuma-20 degrees Celsius, kwaye ke uvavanyo lwe-viscosity lunokwenziwa!
Ixesha lokuposa: Feb-02-2023