Imikhiqizo kasimende, njengokhonkolo, ngodaka, nezinye izinto zokwakha, isetshenziswa kabanzi ezakhiweni zanamuhla. I-Cellulose Afers (enjenge-hydroxypropyll methylcellulose (HPMC), i-hydroxyyethyl methylcellulose (hemc), njll.) Ziyizithasizo ezibalulekile ezingathuthukisa kakhulu ukusebenza kwemikhiqizo yosethusi. Ukuze uzuze lezi zinto ezinhle kakhulu, kubalulekile ukuze uzenze kahle futhi alawule ukusebenza kwezithambisi ze-cellulose.
1. Izakhiwo eziyisisekelo nemisebenzi ye-cellulose afes
I-Cellulose I-THERS iyisigaba sokutholwa kwamakhemikhali we-cellulose yemvelo, lapho iqembu le-hydroxyl lithathelwa indawo yiqembu le-ether ngokusebenzisa ukusabela kokuthezeka. Izinhlobo ezahlukene ze-cellulose afers zingahlanganiswa ngokuya ngohlobo nenombolo yabalinganiselwaphi, futhi uhlobo ngalunye lunendima ehlukile emikhiqizweni yesimende.
I-Viscosing of CelloseLosing Lesters:
I-viscose ye-Cellulose Tather ithinta ngqo i-Rheology kanye nokuqina kukasenti lokunamathisela. I-pollulose ephezulu ye-cellule I-SuppleLosity-Vislulose Tallule
I-degree yokufaka esikhundleni (DS) kanye ne-molar efakwa esikhundleni (MS):
Izinga lokufaka esikhundleni sokufakwa esikhundleni kanye ne-molar efakwe esikhundleni se-cellulose afers inquma i-solubility yayo kanye nokubonakala kwesixazululo. Izinga eliphakeme lokufaka esikhundleni sokufakwa esikhundleni kanye ne-molar ephakeme livame ukuthuthukisa ukugcinwa kwamanzi kanye nokuqina kwe-cellulose afes.
I-Solubity of Cellulose Afers:
Izinga lokuchithwa kanye nokulimazeka kwezithathela ze-cellulose kuthinta ukufana kukasimende unamathisele. I-Cellulose Tashers ene-solubity enhle ingakha isixazululo esifanayo ngokushesha, ngaleyo ndlela iqinisekise ukufana nokuqina komathisi.
2. Khetha izitha ezifanele ze-cellulose
Izimo ezihlukile zohlelo zinezidingo ezihlukile zokusebenza kwezi-Cellulose Afer. Ukukhetha uhlobo olufanele kanye nokucaciswa kwe-cellulose ether kungathuthukisa kakhulu ukusebenza kwemikhiqizo kasimende:
Ama-Binders:
Kuzinhlelo zokusebenza ezinjengezithambisi ze-tile nezinkani ezi-plaster, i-pollule cellulose izitha (ezifana ne-HPMC) zinganikeza ukunamathela okungcono nokukhula okuhlala njalo, ngaleyo ndlela kuthuthukiswe ukusebenza kokwakha kanye namandla okugcina.
Izinto zokugcina amanzi:
Ku-maling woldering madiars kanye nama-tel-based tile adhesives, ama-cellulose izithathekisa ngokugcinwa kwamanzi okuphezulu (njenge-hemc) kuyadingeka. Ukugcinwa kwamanzi okuphezulu kusiza ukuvikela ukulahleka kwamanzi ngaphambi kwesikhathi, ngaleyo ndlela kuqinisekiswe ukusabela ngokwanele kwe-hydrate kanye nesikhathi esizayo.
Izinto eziqinisiwe:
I-Cellulose Tashers esetshenziselwa ukuthuthukisa amandla emikhiqizo yokwehla kwesimende kudingeka ibe nokuhlakazeka okuhle nokubonakaliswa okulinganiselayo ukuthuthukisa ukufana namandla e-matrix.
3. Lungiselela indlela yokungeza
Ukulawula indlela yokungeza ye-cellulose ether emikhiqizweni kasimende kubalulekile ukukhulisa ukusebenza kwayo. Okulandelayo izindlela eziningana zokusebenzisa kahle:
Indlela ye-Premixing:
Hlanganisa i-cellulose ether nezinye izinto ezomile zempuphu ngaphambi kwesikhathi. Le ndlela ingakugwema ukwakheka kwe-agglomeration of cellulose ether ngemuva kokuxhumana ngqo namanzi, ngaleyo ndlela uqinisekise ukuhlakazeka kwawo okufanayo ku-slurry.
Indlela yokuxubana ye-WET:
Ngeza i-celtulose ether ku-Cement Slurry kancane kancane. Le ndlela ilungele isimo lapho iCellulosi Ether inciphisa ngokushesha futhi isiza ukwakha ukumiswa okuzinzile.
Indlela yokungezwa ehlukanisiwe:
Esezinhlelweni zokulungiselela usimende slurry, engeza i-cellulose ether ngezigaba kungaqinisekisa ukusatshalaliswa kwayo okufanayo kuyo yonke inqubo yokulungiselela futhi kunciphise i-agglomeration.
4. Lawula izinto zangaphandle
Izici zangaphandle ezinjengokushisa, inani le-PH, kanye nezinga elishukumisayo linomthelela omkhulu ekusebenzeni kwe-cellulose ether.
Ukulawulwa kokushisa:
I-solubity kanye ne-viscosity ye-cellulose ether iyazwela kakhulu ekushiseni. Amazinga okushisa aphezulu asiza i-cellulose ether ukuncibilikisa ngokushesha, kepha futhi kungadala ukuthi i-viscosity yekhambi linciphe. Amazinga okushisa kufanele alungiswe ngokuya ngesimo esithile sohlelo lokusebenza ukuqinisekisa ukusebenza kahle nokusebenza.
Ukulungiswa kwe-PH: Ivelu ye-PH ye-PH yokunamathisela usimende imvamisa ebangeni eliphakeme le-alkali, kuyilapho i-solubity kanye nokubonakala kwe-cellulose ether kuguquguquka ngoshintsho lwenani le-PH. Ukulawula inani le-PH ngaphakathi kwebanga elifanele kungaqinisa ukusebenza kwe-cellulose ether.
Izinga elishukumisayo: Izinga elishukumisayo lithinta umphumela wokuhlakazwa kwe-cellulose ether ku-Cement Paste. Izinga eliphakeme kakhulu elishukumisayo lingaholela ekungenisweni komoya kanye nokuhlanganiswa kwe-cellulose ether, kuyilapho isilinganiso esilinganiselwe esishukumisayo sisiza ukusabalalisa ngokulinganayo futhi ukuncibilikisa i-cellulose ether.
I-5. Ukuhlaziywa kwamacala nokusikisela okusebenzayo
Ngokuhlaziywa kwangempela kwamacala, singaphinde siqonde uhlelo lokusebenzisa kanye nokwenza kahle kwecebo le-cellulose ether ngemikhiqizo ehlukene yesimende:
Ukunamathela kwe-tile ephezulu Ngokwethula i-hemc egcina amanzi ephezulu kanye nokulungisa inani layo lezengezo kanye nendlela yokungezelela (usebenzisa indlela ye-Premixing), ukugcinwa kwamanzi kanye namandla ofakazi we-tile anamanzi athuthukiswa ngempumelelo.
Izinto zokuzimela ezizimele Ngokukhetha i-HPMC ephansi ye-HPMC ephansi nokwenza kahle inani elishukumisayo kanye nokulawulwa kokushisa, uketshezi nokusebenza kokwakha kwe-slurry kuthuthukiswa, okwenza indawo yokugcina ebushelelezi.
Ukulawula ukusebenza kwe-cellulose ether emikhiqizweni kasimende kuyisihluthulelo sokwenza ngcono ukusebenza kwezinto ezibonakalayo nekhwalithi yokwakha. Ngokukhetha uhlobo olufanele lwe-cellulose ether, ukwenza kahle indlela yokungezwa, nokulawula izinto ezithonya zangaphandle, izakhiwo ezibalulekile zemikhiqizo kasimende njengokugcinwa kwamanzi, ukunamathela, kanye noxhaxha lwamanzi. Kuzinhlelo zokusebenza ezisebenzayo, kuyadingeka ukuthuthukisa ngokuqhubekayo futhi uguqule ukusetshenziswa kwe-cellulose ether ngokuya ngezidingo ezithile nezimo zohlelo lokusebenza ukuze uzuze imiphumela emihle kakhulu.
Isikhathi sePosi: Jun-26-2024