Njengengxube ebaluleke kakhulu ekwakheni imikhiqizo yodaka oluxutshwe okomile, i-cellulose ether idlala indima ebalulekile ekusebenzeni kanye nezindleko zodaka oluxutshwe okomile. Kunezinhlobo ezimbili ze-cellulose ethers: eyodwa i-ionic, njenge-sodium carboxymethyl cellulose (CMC), kanti enye i-non-ionic, njenge-methyl cellulose (MC), i-hydroxyethyl cellulose (HEC), i-Hydroxypropyl cellulose (HPMC), njll. Njengamanje, iningi lemikhiqizo ye-cellulose ether yomhlaba wonke isetshenziswa ezintweni zokwakha. Ngokuthuthuka okusheshayo kwemboni yodaka oluxutshwe okomile, i-cellulose ether yezwe lami isizuze ngokuyisisekelo ukwenziwa kwasendaweni, futhi isimo semikhiqizo yangaphandle elawula imakethe sephukile. Ngokuthandwa okwandayo kokusetshenziswa kwemikhiqizo yodaka oluxutshwe okomile, izwe lami lizoba umkhiqizi omkhulu emhlabeni wonke wodaka oluxutshwe okomile, ukusetshenziswa kwe-cellulose ether kuzokwanda, futhi abakhiqizi balo nezinhlobo zemikhiqizo nazo zizokwanda. Ukusebenza komkhiqizo we-cellulose ether odakeni oluxutshwe okomile sekugxile kakhulu ekunakeni kwabakhiqizi nabasebenzisi.
Impahla ebaluleke kakhulu ye-cellulose ether ukugcinwa kwayo kwamanzi ezintweni zokwakha. Ngaphandle kokwengezwa kwe-cellulose ether, ungqimba oluncane lodaka olusha loma ngokushesha kangangokuthi usimende awukwazi ukumanzisa ngendlela evamile futhi udaka alukwazi ukuqina futhi lufinyelele ukuhlangana okuhle. Ngesikhathi esifanayo, ukungezwa kwe-cellulose ether kwenza udaka lube ne-plasticity enhle nokuguquguquka, futhi kuthuthukisa amandla okubopha odaka. Ake sikhulume ngomthelela ekusetshenzisweni kodaka oluxutshwe okomile kusukela ekusebenzeni komkhiqizo we-cellulose ether.
1. Ubuhle be-cellulose
Ukucoleka kwe-cellulose ether kuthinta ukunyibilika kwayo. Isibonelo, ukuncipha kokucoleka kwe-cellulose ether, lapho incibilika ngokushesha emanzini kanye nokuthuthukiswa kokusebenza kokugcinwa kwamanzi. Ngakho-ke, ukucoleka kwe-cellulose ether kufanele kufakwe njengenye yezakhiwo zayo zophenyo. Ngokuvamile, insalela yesisefo ye-cellulose ether fineness engaphezu kuka-0.212mm akufanele ibe ngaphezu kuka-8.0%.
2. Ukomisa izinga lokulahlekelwa isisindo
Izinga lokuncipha kwesisindo lokomisa libhekisela kuphesenti lesisindo sezinto ezilahlekile kusisindo sesampula yangempela lapho i-cellulose ether yomiswa ezingeni lokushisa elithile. Ngekhwalithi ethile ye-cellulose ether, izinga lokuncipha kwesisindo lokomisa liphezulu kakhulu, okuzonciphisa okuqukethwe kwezithako ezisebenzayo ku-cellulose ether, kuthinte umthelela wokusetshenziswa kwamabhizinisi angezansi, futhi kukhuphule izindleko zokuthenga. Imvamisa, ukuncipha kwesisindo ekomisweni kwe-cellulose ether akukho ngaphezu kuka-6.0%.
3. I-sulfate ash content ye-cellulose ether
Ngekhwalithi ethile ye-cellulose ether, okuqukethwe komlotha kuphezulu kakhulu, okuzonciphisa okuqukethwe kwezithako ezisebenzayo ku-cellulose ether futhi kuthinte umphumela wokusetshenziswa kwamabhizinisi aphansi. I-sulfate ash content ye-cellulose ether iyisilinganiso esibalulekile sokusebenza kwayo. Kuhlanganiswe nesimo samanje sokukhiqiza sabakhiqizi bezwe lami abakhona be-cellulose ether, ngokuvamile okuqukethwe komlotha we-MC, HPMC, HEMC akufanele kudlule u-2.5%, futhi okuqukethwe komlotha we-HEC cellulose ether akufanele kudlule u-10.0%.
4. I-viscosity ye-cellulose ether
Ukugcinwa kwamanzi kanye nomthelela wokujiya we-cellulose ether ikakhulukazi kuncike ku-viscosity kanye nomthamo we-cellulose ether ngokwayo eyengezwe ku-slurry kasimende.
5. Inani le-pH le-cellulose ether
I-viscosity yemikhiqizo ye-cellulose ether izokwehla kancane kancane ngemva kokugcinwa ekushiseni okuphezulu noma isikhathi eside, ikakhulukazi emikhiqizweni ye-viscosity ephezulu, ngakho-ke kuyadingeka ukunciphisa i-pH. Ngokuvamile, kuyatuseka ukulawula uhla lwe-pH lwe-cellulose ether ukuya ku-5-9.
6. Ukudlulisa ukukhanya kwe-cellulose ether
Ukudluliswa kokukhanya kwe-cellulose ether kuthinta ngokuqondile umphumela wayo wokusetshenziswa ezintweni zokwakha. Izici eziyinhloko ezithinta ukudluliswa kokukhanya kwe-cellulose ether yilezi: (1) ikhwalithi yezinto ezingavuthiwe; (2) umphumela we-alkalization; (3) isilinganiso senqubo; (4) isilinganiso se-solvent; (5) umphumela wokungathathi hlangothi. Ngokomphumela wokusetshenziswa, ukukhanya kwe-cellulose ether akufanele kube ngaphansi kwama-80%.
7. Izinga lokushisa lejeli le-cellulose ether
I-Cellulose ether isetshenziswa kakhulu njenge-viscosifier, i-plasticizer kanye ne-ejenti yokugcina amanzi emikhiqizweni kasimende, ngakho-ke i-viscosity kanye nezinga lokushisa lejeli yizinyathelo ezibalulekile zokubonisa ikhwalithi ye-cellulose ether. Izinga lokushisa lejeli lisetshenziselwa ukunquma uhlobo lwe-cellulose ether, ehlobene nezinga lokushintshaniswa kwe-cellulose ether. Ngaphezu kwalokho, usawoti kanye nokungcola kungase kuthinte izinga lokushisa lejeli. Lapho izinga lokushisa lesisombululo likhuphuka, i-polymer cellulose kancane kancane ilahlekelwa amanzi, futhi i-viscosity yesisombululo iyancipha. Lapho iphuzu le-gel lifinyelelwa, i-polymer iphelelwe amanzi ngokuphelele futhi yakha ijeli. Ngakho-ke, emikhiqizweni kasimende, izinga lokushisa livame ukulawulwa ngaphansi kwezinga lokushisa lokuqala le-gel. Ngaphansi kwalesi simo, izinga lokushisa liyancipha, i-viscosity iyanda, futhi umphumela osobala kakhulu wokujiya nokugcinwa kwamanzi.
Isikhathi sokuthumela: Dec-23-2022