Cellulose ether ipolymer mukomboni wakagadzirwa kubva pachisikigo cellulose kuburikidza ne etherification maitiro, uye yakanakisa thickener uye mvura inochengetedza mumiririri.
Zvekutsvagisa
Cellulose ethers yakashandiswa zvakanyanya mumatope akaoma-akasanganiswa mumakore achangopfuura, anonyanya kushandiswa mamwe asiri-ionic cellulose ethers, kusanganisira methyl cellulose ether (MC), hydroxyethyl cellulose ether (HEC), hydroxyethyl cellulose ether Methyl cellulose ether (HEMC). ) uye hydroxypropyl methyl cellulose ether (HPMC). Parizvino, hapana mabhuku akawanda pamusoro pekuyera nzira ye viscosity ye cellulose ether solution. Munyika yedu, mamwe mazinga uye monographs chete anotsanangura nzira yekuyedza ye viscosity ye cellulose ether mhinduro.
Kugadzirira kweMethyl Cellulose Ether Solution
Methyl cellulose ethers inoreva cellulose ethers ine methyl mapoka mumorekuru, senge MC, HEMC uye HPMC. Nekuda kweiyo hydrophobicity yeboka remethyl, iyo cellulose ether mhinduro dzine methyl mapoka ane thermal gelation properties, kureva kuti, haigadziriswi mumvura inopisa pane tembiricha yakakwira kupfuura gelation yavo yekushisa (inenge 60-80 ° C). Kuti udzivise cellulose ether solution kubva pakuumba agglomerates, kupisa mvura pamusoro pekushisa kwegel, inenge 80 ~ 90 ° C, wobva wawedzera cellulose ether powder mumvura inopisa, simbisa kuti upararire, ramba uchikurudzira uye utonhorere. tembiricha, inogona kugadzirirwa kuita yunifomu cellulose ether mhinduro.
Kuti udzivise kuungana kwe cellulose ether panguva yekunyunguduka, vagadziri dzimwe nguva vanoita kemikari pamusoro pekurapa paupfu cellulose ether zvigadzirwa kunonoka kupera. Kunyungudika kwayo kunoitika mushure mekunge cellulose ether yaparadzirwa zvachose, saka inogona kuparadzirwa zvakananga mumvura inotonhora ine kwayakarerekera pH kukosha pasina kugadzira agglomerates. Iyo yakakwirira pH kukosha kwemushonga, inopfupika nguva yekunyungudika ye cellulose ether nekunonoka kunyungudika zvinhu. Gadzirisa pH kukosha kwemhinduro kune yakakosha kukosha. Alkalinity inobvisa kunonoka kunyunguduka kwe cellulose ether, zvichiita kuti cellulose ether iite agglomerates pakunyungudika. Naizvozvo, iyo pH kukosha kwemhinduro kunofanirwa kusimudzwa kana kuderedzwa mushure mekunge cellulose ether yapararira zvachose.
Kugadzirira kweHydroxyethyl Cellulose Ether Solution
Hydroxyethyl cellulose ether (HEC) mhinduro haina pfuma ye thermal gelation, saka, HEC pasina kurapwa kwepamusoro ichaitawo agglomerates mumvura inopisa. Vagadziri vanowanzoita kemikari pamusoro pekurapa paHEC yehupfu kuti inonoke kunyungudika, kuitira kuti inogona kuparadzirwa zvakananga mumvura inotonhora isina kwayakarerekera pH kukosha pasina kugadzira agglomerates. Saizvozvo, mune mhinduro ine yakakwira alkalinity, HEC Inogona zvakare kugadzira agglomerates nekuda kwekunonoka kunyungudika kurasikirwa. Sezvo simende slurry iri alkaline mushure me hydration uye pH kukosha kwemhinduro iri pakati pe12 ne13, chiyero chekuparara kwepamusoro-yakagadziriswa cellulose ether mu simenti slurry zvakare inokurumidza zvikuru.
Mhedziso uye Ongororo
1. Kuparadzira maitiro
Kuti udzivise migumisiro yakaipa panguva yekuedza nekuda kwekunonoka kupera kwezvinhu zvekurapa kwepamusoro, zvinokurudzirwa kushandisa mvura inopisa yekugadzirira.
2. Kutonhora maitiro
Cellulose ether mhinduro dzinofanirwa kumutswa nekutonhodzerwa pane ambient tembiricha kudzikisa mwero wekutonhora, izvo zvinoda nguva dzekuyedza dzakawedzerwa.
3. Kukurudzira nzira
Mushure mokunge cellulose ether yawedzerwa kumvura inopisa, iva nechokwadi chekuramba uchikurudzira. Kana tembiricha yemvura inodonha pazasi tembiricha yegel, cellulose ether inotanga kunyungudika, uye mhinduro yacho inozove viscous. Panguva ino, kukurumidza kwekukurumidza kunofanira kuderedzwa. Mushure mekunge mhinduro yasvika kune imwe viscosity, inoda kumira kweanopfuura maawa gumi mabhubhu asati ayerera zvishoma nezvishoma kumusoro kuti aputika nekunyangarika.
4. Hydrating process
Hunhu hwe cellulose ether uye mvura hunofanirwa kuyerwa nemazvo, uye edza kusamirira kuti mhinduro isvike kune yakakwira viscosity isati yazadza mvura.
5. Viscosity test
Pamusana peiyo thixotropy ye cellulose ether solution, painoedza viscosity yayo, kana rotor ye rotational viscometer yakaiswa mumugadziro, ichavhiringidza mhinduro uye inokanganisa migumisiro yekuyera. Nokudaro, mushure mokunge rotor ichiiswa mumhinduro, inofanira kubvumirwa kumira kwemaminitsi mashanu isati yaedzwa.
Nguva yekutumira: Feb-08-2023