Isici esibaluleke kakhulu se-cellulose ether ukugcina amanzi ezintweni zokwakha. Ngaphandle kokwengezwa kwe-cellulose ether, ungqimba oluncane lwe-mortar entsha loma ngokushesha kangangokuthi usimende awukwazi ukumanzisa ngendlela evamile futhi i-mortar ayikwazi ukuqina futhi ifinyelele ukuhlangana okuhle. Ngesikhathi esifanayo, ukwengezwa kwe-cellulose ether kwenza i-mortar ibe ne-plasticity enhle kanye nokuguquguquka, futhi kuthuthukisa amandla okubopha kwe-mortar. Ake sixoxe ngomthelela ekusetshenzisweni kwe-mortar exutshwe okomile ekusebenzeni komkhiqizo we-cellulose ether.
1. Ubuncane be-cellulose ether
Ubuncane be-cellulose ether buthinta ukuncibilika kwayo. Isibonelo, uma ubuncane be-cellulose ether buphansi, buncibilika ngokushesha emanzini kanye nokuthuthukiswa kokusebenza kokugcinwa kwamanzi. Ngakho-ke, ubuncane be-cellulose ether kufanele bufakwe njengenye yezimpawu zayo zocwaningo. Ngokuvamile, insalela yesihlungo sobuncane be-cellulose ether obudlula u-0.212mm akufanele idlule u-8.0%.
2. Izinga lokwehlisa isisindo lokomisa
Izinga lokulahlekelwa isisindo lokomisa libhekisela kumaphesenti esisindo sezinto ezilahlekile esisindo sesampula yokuqala lapho i-cellulose ether yomiswa ekushiseni okuthile. Ngekhwalithi ethile ye-cellulose ether, izinga lokulahlekelwa isisindo lokomisa liphezulu kakhulu, okuzonciphisa okuqukethwe kwezithako ezisebenzayo ku-cellulose ether, kuthinte umphumela wokusetshenziswa kwamabhizinisi angaphansi, futhi kwandise izindleko zokuthenga. Ngokuvamile, ukulahlekelwa isisindo lapho komiswa i-cellulose ether akudluli ku-6.0%.
3. Okuqukethwe komlotha we-sulfate we-cellulose ether
Ngekhwalithi ethile ye-cellulose ether, okuqukethwe komlotha kuphakeme kakhulu, okuzonciphisa okuqukethwe kwezithako ezisebenzayo ku-cellulose ether futhi kuthinte umphumela wokusetshenziswa kwamabhizinisi angaphansi komfula. Okuqukethwe komlotha we-sulfate kwe-cellulose ether kuyisilinganiso esibalulekile sokusebenza kwayo. Kuhlanganiswe nesimo samanje sokukhiqiza sabakhiqizi be-cellulose ether abakhona ezweni lami, ngokuvamile okuqukethwe komlotha kwe-MC, HPMC, HEMC akufanele kudlule u-2.5%, kanye nokuqukethwe komlotha kwe-HEC cellulose ether akufanele kudlule u-10.0%.
4. Ukuqina kwe-cellulose ether
Ukugcinwa kwamanzi kanye nomphumela wokuqina kwe-cellulose ether kuncike kakhulu ekuqineni kanye nomthamo we-cellulose ether uqobo ongezwe ku-slurry yesimende.
5. Inani le-pH le-cellulose ether
Ukuqina kwemikhiqizo ye-cellulose ether kuzoncipha kancane kancane ngemva kokugcinwa ekushiseni okuphezulu noma isikhathi eside, ikakhulukazi emikhiqizweni ene-viscosity ephezulu, ngakho-ke kuyadingeka ukunciphisa i-pH. Ngokuvamile, kuyalulekwa ukulawula ububanzi be-pH ye-cellulose ether bube ngu-5-9.
6. Ukuhanjiswa okulula kwe-cellulose ether
Ukuhanjiswa kokukhanya kwe-cellulose ether kuthinta ngqo umphumela wokusetshenziswa kwayo ezintweni zokwakha. Izici eziyinhloko ezithinta ukuhanjiswa kokukhanya kwe-cellulose ether yilezi: (1) ikhwalithi yezinto zokusetshenziswa; (2) umphumela we-alkaliization; (3) isilinganiso senqubo; (4) isilinganiso se-solvent; (5) umphumela we-neutralization.
Ngokusho komphumela wokusetshenziswa, ukuhanjiswa kokukhanya kwe-cellulose ether akufanele kube ngaphansi kuka-80%.
7. Izinga lokushisa lejeli le-cellulose ether
I-Cellulose ether isetshenziswa kakhulu njenge-viscosifier, i-plasticizer kanye ne-ejenti yokugcina amanzi emikhiqizweni yesamente, ngakho-ke i-viscosifier kanye nokushisa kwejeli kuyizinyathelo ezibalulekile zokubonisa ikhwalithi ye-cellulose ether. Izinga lokushisa lejeli lisetshenziselwa ukunquma uhlobo lwe-cellulose ether, oluhlobene nezinga lokufakwa esikhundleni kwe-cellulose ether. Ngaphezu kwalokho, usawoti kanye nokungcola nakho kungathinta izinga lokushisa lejeli. Lapho izinga lokushisa lesisombululo likhuphuka, i-cellulose polymer ilahlekelwa amanzi kancane kancane, futhi i-viscosity yesisombululo iyancipha. Lapho iphuzu lejeli lifinyelelwa, i-polymer iyaphela ngokuphelele futhi yakhe ijeli. Ngakho-ke, emikhiqizweni yesamente, izinga lokushisa livame ukulawulwa ngaphansi kwezinga lokushisa lokuqala lejeli. Ngaphansi kwalesi simo, lapho izinga lokushisa liphansi, i-viscosity iba phezulu, futhi umphumela wokujiya kanye nokugcinwa kwamanzi usobala kakhulu.
Isikhathi sokuthunyelwe: Ephreli-28-2023