Cellulose ether i polymer yakagadzirwa kubva kune yakasikwa cellulose kuburikidza nekugadzirisa kemikari. Cellulose ether inobva kune yakasikwa cellulose. Kugadzirwa kwe cellulose ether kwakasiyana nemapolymer ekugadzira. Yayo inonyanya kukosha ndeye cellulose, yakasikwa polymer musanganiswa. Nekuda kwekusarudzika kwechisikigo cellulose chimiro, iyo cellulose pachayo haina kugona kuita ne etherification agents. Zvisinei, mushure mekurapwa kwechirwere chekuzvimba, zvisungo zvakasimba zvehydrogen pakati pemaketani emaketani nemaketani zvinoparadzwa, uye kusunungurwa kunoshingaira kweboka rehydroxyl kunova reactive alkali cellulose. Wana cellulose ether.
Zvinhu zve cellulose ethers zvinoenderana nerudzi, nhamba uye kugovera kwezvinotsiva. Kurongeka kwe cellulose ether inoiswawo zvichienderana nerudzi rweinotsiva, dhigirii reetherification, solubility uye zvine chekuita nekushandisa zvivakwa. Zvinoenderana nerudzi rwezvinotsiva pane molecular cheni, inogona kukamurwa kuita monoether uye yakasanganiswa ether. Iyo MC yatinowanzo shandisa ndeye monoether, uye iyo HPMC yakasanganiswa ether. Methyl cellulose ether MC ndicho chigadzirwa mushure meboka re hydroxyl pane glucose unit ye natural cellulose inotsiviwa ne methoxy. Icho chigadzirwa chinowanikwa nekutsiva chikamu cheboka rehydroxyl payuniti neboka remethoxy uye chimwe chikamu neboka rehydroxypropyl. Iyo yemaitiro fomula ndeye [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEMC, aya ndiwo makuru emhando anoshandiswa zvakanyanya uye anotengeswa pamusika.
Panyaya yekunyungudika, inogona kukamurwa kuita ionic uye isiri-ionic. Mvura inonyungudika isiri-ionic cellulose ethers inonyanya kuumbwa maviri akatevedzana ealkyl ethers uye hydroxyalkyl ethers. Ionic CMC inonyanya kushandiswa mukugadzira dhizaini, machira kudhinda uye dhayi, chikafu uye kuongorora mafuta. Non-ionic MC, HPMC, HEMC, nezvimwewo zvinonyanya kushandiswa mukuvaka zvinhu, latex coatings, mishonga, makemikari ezuva nezuva, etc. Inoshandiswa seyakasviba, mvura inochengetedza agent, stabilizer, dispersant uye film forming agent.
Kuzivikanwa kwemhando ye cellulose ether:
Mhedzisiro yemethoxyl yemukati pamhando: kuchengetedza mvura uye kukora basa
Kurudziro yemhando yehydroxyethoxyl/hydroxypropoxyl yemukati: iyo yakakwirira yemukati, zvirinani kuchengetedza kwemvura.
Kupesvedzera kwemhando yeviscosity: iyo yakakwirira dhigirii yepolymerization, iyo yakakwirira viscosity uye zvirinani kuchengetedza kwemvura.
Kurudziro yemhando yehunyoro: iyo yakanakisa kupararira uye kunyungudika mudhaka, iyo inokurumidza uye yakawanda yunifomu, uye kuchengetwa kwemvura kuri nani.
Hunhu hwekufambiswa kwechiedza: iyo yakakwira dhigirii yepolymerization, iyo yakawanda yunifomu dhigirii repolymerization, uye kushomeka kusvibiswa.
Gel tembiricha yemhando yekuita: tembiricha yegel yekuvaka inotenderedza 75°C
Kufurira kwemhando yemvura: <5%, cellulose ether iri nyore kutora unyoro, saka inofanira kuvharwa nekuchengetwa.
Hunhu hwemadota: <3%, iyo yakakwira madota, iyo yakanyanya kusvibiswa
PH kukosha kwehunhu: padhuze nekusarerekera, cellulose ether ine yakagadzikana kuita pakati pePH: 2-11
Nguva yekutumira: Feb-14-2023