I-viscosity ephezuluI-CMCiyimpushana emhlophe noma emhlophe njenge-milky noma ama-granules, anokuminyana okungu-0.5-0.7 g/cm3, cishe ayinaphunga, ayinambitheki, futhi i-hygroscopic. Ihlakazeka kalula emanzini ukuze yenze isixazululo se-colloidal esobala, esingancibiliki kumakhemikhali ezinto eziphilayo njenge-ethanol. I-pH ye-1% yesisombululo samanzi ngu-6.5 kuya ku-8.5. Uma i-pH ingu>10 noma i-<5, i-viscosity yeglue izoncipha kakhulu, futhi ukusebenza kuzoba okungcono kakhulu uma i-pH ingu-7. Izinga lokushintshwa kwe-CMC lithinta ngokuqondile ukunyibilika, ukulingisa, kanye nokuthuthukiswa kwe-CMC. Ukuvumelana, ukuzinza, ukumelana ne-asidi nokumelana nosawoti kanye nezinye izakhiwo.
Ngokuvamile kunenkolelo yokuthi uma izinga lokushintsha liseduze kuka-0.6-0.7, ukusebenza kwe-emulsifying kuba ngcono, futhi ngokwanda kwezinga lokushintshwa, ezinye izakhiwo ziyathuthukiswa ngokufanele. Lapho izinga lokushintsha lingaphezu kuka-0.8, ukumelana kwayo ne-asidi nokumelana nosawoti kuyathuthukiswa kakhulu. .
Izinkomba eziyinhloko zokukala ikhwalithi ye-CMC yi-degree of substitution (DS) nobumsulwa. Ngokuvamile, izakhiwo ze-CMC zihlukile uma i-DS ihlukile; izinga lokushintsha liphakeme, kuqina ukuncibilika, kanye nokuba sobala nokuzinza kwesixazululo. Ngokwemibiko, ukucaca kwe-CMC kungcono uma izinga lokushintshwa liyi-0.7-1.2, futhi i-viscosity yesisombululo sayo esinamanzi inkulu kakhulu lapho inani le-pH liyi-6-9.
Izinga lemikhiqizo eqediwe ye-CMC ikakhulukazi lincike kwisixazululo somkhiqizo. Uma isixazululo somkhiqizo sicacile, kunezinhlayiya ezimbalwa zejeli, imicu yamahhala, namabala amnyama okungcola, kuqinisekiswa ngokuyisisekelo ukuthi izinga le-CMC lihle. Uma isisombululo sishiywe izinsuku ezimbalwa, isisombululo asibonakali. Imhlophe noma i-turbid, kodwa isacacile kakhulu, lowo ngumkhiqizo ongcono!
1. Ukwethulwa kafushane kwebanga eliphezulu le-viscosity technical grade CMC kanye ne-low-viscosity technical grade CMC yoketshezi lokumba uwoyela
1. Udaka lwe-CMC lungenza udonga lomthombo lube ikhekhe lokuhlunga elincanyana neliqinile elinokungena kancane, linciphise ukulahlekelwa kwamanzi.
2. Ngemva kokwengeza i-CMC odakeni, umshini wokumba ungathola amandla okugunda okuqala aphansi, ukuze udaka lukhulule kalula igesi egoqwe kulo, futhi ngesikhathi esifanayo, imfucumfucu ingalahlwa ngokushesha emgodini wodaka.
3. Ukumba udaka, njengamanye ama-suspension and dispersions, kuneshelufu ethile yokuphila. Ukwengeza i-CMC kungayenza izinze futhi kwelule impilo yeshalofu.
4. Udaka oluqukethe i-CMC aluvamile ukuthintwa isikhunta, ngakho-ke akudingekile ukugcina inani eliphezulu le-pH nokusebenzisa izivimbelakuvunda.
5. Iqukethe i-CMC njenge-ejenti yokwelapha yokumba uketshezi olukhipha udaka, olungamelana nokungcoliswa kukasawoti omningi oncibilikayo.
6. Udaka oluqukethe i-CMC lunozinzo oluhle futhi lunganciphisa ukulahlekelwa kwamanzi ngisho noma izinga lokushisa lingaphezu kuka-150°C.
Amazwana: I-CMC ene-viscosity ephezulu kanye nezinga eliphakeme lokushintshwa lifanele udaka olunomthamo ophansi, futhi i-CMC ene-viscosity ephansi kanye nezinga eliphezulu lokushintshwa lifanele udaka olunomthamo ophezulu. Ukukhethwa kwe-CMC kufanele kunqunywe ngokuvumelana nezimo ezahlukene ezifana nohlobo lodaka, isifunda, nokujula kwemithombo.
Isicelo esiyinhloko: I-MB-CMC3 idlala indima yokuphakamisa nokwehlisa ukulahlekelwa kwamanzi kanye nokukhushulwa kwe-viscosity kuketshezi lokumba, uketshezi lukasimende noketshezi oluqhekekayo, ukuze kufezwe imisebenzi yokuvikela udonga, ukuthwala ukusikwa, ukuvikela i-drill bit, ukuvimbela ukulahleka kodaka nokwanda. isivinini sokubhoboza. Yengeze ngokuqondile noma uyenze ibe yi-glue bese uyifaka odakeni, engeza u-0.1-0.3% emanzini ahlanzekile ahlanzekile, bese wengeza u-0.5-0.8% emanzini anosawoti.
2. Ukusetshenziswa kwe-CMC embonini yokuhlanganisa
Inhloso eyinhloko:
Njenge-stabilizer, ingavimbela ukunamathela ekuhlukaniseni ngenxa yezinguquko ezibukhali ekushiseni.
Njenge-tackifier, ingenza isimo somfaniswano wokuhlanganisa, ifinyelele isitoreji esifanele kanye ne-viscosity yokwakha, futhi igweme ukuchithwa okukhulu ngesikhathi sokugcina.
Ivikela ama-drip nama-sags ngesikhathi sokusetshenziswa.
I-ST, SR series CMC esheshayo ingancibilika ngokuphelele emizuzwini engama-30, yakhe isixazululo esicacile, esisobala, esifana ne-colloidal, ngaphandle kokucwiliswa isikhathi eside nokunyakazisa ngamandla.
Izinkomba zobuchwepheshe ze-Coating grade CMC:
3. Ukusetshenziswa kwe-CMC embonini yobumba
Uhlelo lokusebenza oluyinhloko: I-MB-CMC3 isetshenziswa kuma-ceramics njenge-retarder, i-ejenti yokugcina amanzi, i-thickener kanye ne-stabilizer. Enqubweni yokukhiqiza i-ceramic, isetshenziswa emzimbeni we-ceramic, i-glaze slurry kanye nokuphrinta ukuze kuthuthukiswe kakhulu amandla okuguquguquka komzimba futhi kuthuthukise ukuzinza kwe-glaze slurry.
4. Ukusetshenziswa kwe-CMC embonini yokuwasha
Ibanga lokuhlanza i-MB-CMC3: lisetshenziswa ezintweni zokuhlanza ukuvikela ukungcola ekufakweni kabusha. Isimiso siwukuthi kukhona ukuhlehla okuhlangene kwe-electrostatic phakathi kokungcola okukhokhiswe kabi nama-molecule e-CMC akhokhisiwe adsorbed endwangu. Ngaphezu kwalokho, i-CMC ingakwazi futhi Ngokuphumelelayo ukujiya i-slurry egeziwe noma isisombululo sensipho futhi iqinise ukwakheka kokubunjwa.
5. Ukusetshenziswa kwe-CMC embonini yansuku zonke yokuxubha amakhemikhali
Ukusetshenziswa okuyinhloko: I-MB-CMC3 imisiwe ikakhulukazi kumakhemikhali ansuku zonke, ivimbela ukungcola ukuthi kuphinde kunemvula futhi, kugcinwe umswakama, ukuzinza, nokujiya. Inezinzuzo zokuqedwa okusheshayo nokusetshenziswa okulula. Inani elingeziwe ngu-0.3% -1.0%. Isixubho samazinyo ikakhulukazi sidlala indima yokubumba nokuhlanganisa. Ngokuhambisana kwayo okuhle kakhulu, umuthi wokuxubha uhlala uzinzile futhi awuhlukanisi amanzi. Ngokuvamile, umthamo onconyiwe ngu-0.5-1.5%.
Isithupha, ukuzinza kwe-CMC glue viscosity ngokuhamba kwesikhathi, imiyalelo yokusetshenziswa
1. Ngenxa yesisindo samangqamuzana esiphezulu salo mkhiqizo, lapho ulungiselela iglue ye-MB-CMC3, isikhathi sokuhlakazeka sicishe sibe isigamu sehora kuneso se-CMC evamile;
2. Ngenxa ye-viscosity ephezulu yeglue ngaphezu kwe-1.2%, akufanelekile ukusebenzisa ukuhlushwa okungaphezu kuka-1.2% lapho i-CMC igxiliwe. Ngokuvamile, kufaneleka kakhulu ukukhetha iglue nge-concentration mayelana ne-1.0%;
3. Ekukhetheni isilinganiso sokwengezwa se-CMC, kufanele sinqunywe ngokuya ngohlobo lwegraphite, indawo ethile kanye nenani lekhabhoni emnyama (i-ejenti ye-conductive) ethunyelwe, futhi ububanzi besilinganiso sokwengeza okuvamile ngu-0.5%^1.0%;
4. I-viscosity ye-slurry ilawulwa cishe ku-2500mPa.s, ukushelela kanye nokulinganisa kwe-slurry kuzoba ngcono, okuhambisana nokufana kokugqoka.
Isikhombisa, izici zomkhiqizo kanye nezinzuzo
1. Inesisindo esikhulu samangqamuzana, esinganciphisa kakhulu inani le-CMC elingeziwe, futhi ngesikhathi esifanayo liqinisekise i-viscosity nokuzinza kwe-slurry;
2. Inani le-CMC elingezwe kufomula lincishiswa cishe ngo-1%, elingakhuphula okuqukethwe kwezinto ezisebenzayo futhi likhulise izinga elifanelekayo lomthamo womkhiqizo;
Isikhathi sokuthumela: Jan-05-2023