Kusetshenziswa kabanzi ekwakheni, i-hpdroxypropyl methylcellulose (HPMC) yisengezo esemqoka ngodaka. Ithuthukisa izakhiwo ezifana nokusebenza, ukugcinwa kwamanzi kanye nokunamathelisa, ngaleyo ndlela kuthuthukisa ukusebenza kanye nokusebenza kahle.
1. Ukuqonda i-HPMC nezinzuzo zayo
1.1 Iyini i-HPMC?
I-HPMC iyi-ether ye-anionic cellulose ethathwe kwi-cellulose yemvelo. Isetshenziswa kakhulu ezintweni zokwakha, ikakhulukazi udaka ngodaka, ngenxa yamandla alo okushintsha izakhiwo ezibonakalayo zenhlanganisela.
1.2 Izinzuzo ze-HPMC kuDinga
Ukugcinwa kwamanzi: I-HPMC ithuthukisa ukugcinwa kwamanzi, okubalulekile ku-Cement Hydration, ngaleyo ndlela kuthuthukise amandla futhi kunciphise ukushwabana.
Ukusebenza: Kuthuthukisa ukusebenziseka kodaka, okwenza kube lula ukufaka isicelo nokusakazeka.
I-Adhesion: I-HPMC inyusa ukunamathela kodaka ku-substrate, kunciphisa ubungozi bokuhlekisa.
I-Anti-SAG: Kuyasiza udaka ukuthi alondoloze isikhundla sawo ezindaweni ezibheke mpo ngaphandle kokugcwala.
Isikhathi esivulekile esinwetshiwe: I-HPMC inweba isikhathi esivulekile, ivumela isikhathi esithe xaxa sokulungiswa nokuqeda.
2. Izinhlobo ze-HPMC nemiphumela yazo ngodaka
I-HPMC iyatholakala kumabanga ahlukahlukene, ahlukaniswe yi-viscosity kanye nezinga lokuthatha indawo:
I-Viscosity: I-Viscosity ephezulu i-HPMC ithuthukisa ukugcinwa kwamanzi nokusebenza, kepha yenza ukuxuba kube nzima ngokwengeziwe. Amamaki okuvusa okuphansi anokugcinwa kwamanzi ampofu kepha kulula ukuxubana.
Izinga lokufakwa esikhundleni
3. Imihlahlandlela yokuxuba i-HPMC powder ngodaka
3.1 Ukucatshangelwa kwe-Premixing
Ukuvumelana: qiniseka ukuthi iBanga le-HPMC elikhethiwe liyahambisana nezinye izengezo kanye nokwakheka okuphelele kodaka.
Umthamo: I-HPMC umthamo ejwayelekile kusuka ku-0,1% kuya ku-0.5% ngesisindo sokuxubana owomile. Lungisa ngokususelwa kwizidingo ezithile zohlelo lokusebenza.
Inqubo yokuxuba
Ukuxuba okulomile:
Hlanganisa izithako ezomile: hlanganisa kahle i-puleza le-HPMC nezinye izithako ezomile zodaka (usimende, isihlabathi, ama-filler) ukuqinisekisa ukusatshalaliswa.
Ukuxubana kwemishini: Sebenzisa i-agitator yemishini yokuxubana okufanayo. Ukuxuba okwenziwa ngesandla kungenzeka kungafinyeleli ukufana okufunwayo.
Ukungezwa kwamanzi:
Ukungezwa kancane kancane: Faka amanzi kancane kancane ngenkathi uxuba ukugwema ukuqina. Qala ukuxubana nenani elincane lamanzi bese wengeza okuningi njengoba kudingeka.
Isheke lokuhlola okuhlobene: qapha ukungaguquguquki kodaka ukuze kufinyelelwe ekusebenzeni okufunayo. Inani lamanzi angeziwe kufanele lilawulwe ukuze ligweme ukujabula ngokweqile, okunganciphisa le ngxube.
Isikhathi sokuxuba:
Ukuxubana kokuqala: Hlanganisa izakhi zemizuzu engu-3-5 kuze kutholakale ingxube enobungozi.
Isikhathi sokuma: Vumela ingxube ukuba ihlale imizuzu embalwa. Lesi sikhathi sokuma sisiza ukwenza kusebenze ngokugcwele i-HPMC, ukukhulisa ukusebenza kwayo.
Ukuxubana kokugcina: Hlanganisa futhi imizuzu engu-1-2 ngaphambi kokusebenzisa.
3.3 Izeluleko Zokusebenza
Ukushisa kanye nomswakama: lungisa okuqukethwe kwamanzi nesikhathi sokuxuba ngokuya ngezimo ezikhona. Ukushisa okuphezulu noma umswakama ophansi kungadinga amanzi angeziwe noma isikhathi esivulekile.
Ukuhlanzeka Ithuluzi: Qinisekisa ukuthi amathuluzi wokuxuba neziqukathi ahlanzekile ukuvikela ukungcoliswa kanye nemiphumela engahambisani.
4. Ukucatshangelwa okusebenzayo nokuxazulula inkinga
4.1 Ukuphatha nokugcina
Izimo Zokugcina: Gcina i-HPMC powder endaweni epholile, eyomile ukuvikela ukumuncwa komswakama kanye nokuqina.
Impilo yeshelufu: Sebenzisa i-HPMC powder ngaphakathi kwempilo eshalofini ukuze uqinisekise ukusebenza okuhle. Hlola imihlahlandlela yomenzi yezincomo ezithile zokugcina.
4.2 Izinkinga ezijwayelekile nezisombululo
I-Agglomeration: I-HPMC ingahle iqubu uma amanzi engeziwe ngokushesha okukhulu. Ukugwema lokhu, Njalo engeza amanzi kancane futhi uvuse ngokuqhubekayo.
Ukuxuba okungahambisani: Ukuxubana kwemishini kunconyelwa ukusatshalaliswa. Ukuxuba ngesandla kungahle kube nomphumela wokungahambisani.
I-SAGGG: Uma i-sagging yenzeka ezindaweni ezibheke mpo, cabanga ngokusebenzisa i-viscosity ye-HPMC ye-HPMC noma ukuguqula ukwakhiwa ukuze kuthuthukiswe i-thixotropy.
4.3 Ukucatshangelwa Kwezemvelo
Imiphumela yokushisa: Amazinga okushisa aphezulu asheshisa ukumiswa nokomiswa kodaka. Lungisa umthamo we-HPMC noma okuqukethwe kwamanzi ngokufanele.
Imiphumela yomswakama: Umswakama ophansi ungakhuphula izinga lokuhwamuka, okudinga ukulungiswa kumthwalo we-HPMC.
I-5. Amathiphu athuthukisiwe wokukhulisa ukusebenza kahle
5.1 Ukuxuba nezinye izengezo
Ukuhlolwa kokuvumelana: Lapho uxuba i-HPMC nezinye izithasiselo ezifana namanzi aphezulu wamanzi, ama-retaarders, noma ama-accelerator, enza ukuhlolwa kokuhambelana.
Ukuxuba okulandelanayo: Faka i-HPMC nezinye izengezo nge-oda elithile ukugwema ukusebenzisana okungathinta ukusebenza.
5.2 Lungiselela umthamo
I-Pilot: Yenza izivivinyo zokushayela izindiza ukuthola umthamo ofanele we-HPMC wokuxubana ngodaka.
Lungisa: Yenza ukulungiswa okusekelwe kwimpendulo yokusebenza kusuka kuzinhlelo zokusebenza zensimu.
5.3 Thuthukisa izakhiwo ezithile
Ukuze kusebenze: Cabanga ukuhlanganisa i-HPMC nge-Water Reducer ukuze uthuthukise ukusebenza ngaphandle kokuyekethisa amandla.
Ukugcinwa kwamanzi: Uma ukugcinwa kwamanzi okuthuthukisiwe kudingeka ezimweni sezulu ezishisayo, sebenzisa ibanga eliphakeme le-vispecosity le-HPMC.
Ukuxuba ngempumelelo i-HPMC powder kudaka ngodaka kungathuthukisa kakhulu ukusebenza kodaka ngokuthuthukisa ukusebenziseka, ukugcinwa kwamanzi, ukunamathela, kanye nokumelana kwe-sag. Ukuqonda izakhiwo ze-HPMC kanye nokulandela amasu afanele wokuxuba kubalulekile ekwakheni ukusebenza kodaka kwezicelo zokwakha. Ngokunaka uhlobo lwe-HPMC esetshenzisiwe, ukucatshangelwa kwe-Premixing, kanye namathiphu wohlelo lokusebenza olusebenzayo, ungafinyelela umxhwele wekhwalithi ephezulu, esebenza kahle esetshenziselwa izidingo zakho ezithile.
Isikhathi sePosi: Jun-25-2024