Njengezinto zokwakha ezisetshenziswa kabanzi embonini yokwakha, udaka ludlala indima ebalulekile yokwakha nokusebenza. Ukugeleza kodaka kungenye yezinkomba ezibalulekile ezithinta ukusebenza kwalo kokwakha. Ukugeleza okuhle kunegalelo ekwenzeni imisebenzi yokwakha ibe lula kanye nekhwalithi yesakhiwo. Ukuze kuthuthukiswe ukugeleza nokusebenza kodaka, izithasiselo ezahlukahlukene zivame ukusetshenziswa ukulungisa. Phakathi kwazo,i-hydroxypropyl methylcellulose (HPMC), njengenhlanganisela ye-polymer encibilika emanzini evame ukusetshenziswa, idlala indima ebalulekile ku-mortar. .
Izici eziyisisekelo ze-HPMC: I-HPMC iyinto ye-polymer encibilika emanzini eyenziwe nge-cellulose yemvelo eguqulwe ngamakhemikhali. Inokuqina okuhle kakhulu, i-gelling, ukugcinwa kwamanzi nezinye izakhiwo. Ayincibiliki emanzini, kodwa ingakha isixazululo esiqinile emanzini, ngakho-ke ivame ukusetshenziswa kakhulu ekwakheni, ekumbozeni, emithini nakwezinye izinkambu. Uma isetshenziswa njengesithako se-mortar, i-HPMC ingathuthukisa ngempumelelo ukugeleza, ukugcinwa kwamanzi kanye nokusebenza kwe-mortar.
Indlela yethonya le-HPMC ekugelezeni kwe-mortar:
Umphumela wokujiya: I-HPMC ngokwayo inomphumela obalulekile wokujiya. Uma ingezwa ku-mortar, ingakhulisa kakhulu i-viscosity ye-mortar. Umphumela wokujiya ubangelwa ama-molecule e-HPMC akha isakhiwo senethiwekhi emanzini, esimunca amanzi futhi sande, okwandisa i-viscosity yesigaba samanzi. Le nqubo ivumela ukuthi i-fluidity ye-mortar ilungiswe. Uma okuqukethwe kwe-HPMC ku-mortar kuphezulu, ukugeleza kwamanzi okukhululekile kuzokhawulelwa ngezinga elithile, ngakho-ke i-fluidity iyonke ye-mortar izobonisa izinguquko ezithile.
Thuthukisa ukugcinwa kwamanzi: I-HPMC ingakha ifilimu elincane ku-mortar ukunciphisa ukuhwamuka kwamanzi nokuthuthukisa ukugcinwa kwamanzi ku-mortar. I-mortar enokugcinwa kwamanzi okungcono ingagcina ukusebenza isikhathi eside, okubalulekile ukuze kube lula ukwakha ngesikhathi sokwakha. Ukugcinwa kwamanzi amaningi kungavimbela i-mortar ukuthi yome ngaphambi kwesikhathi futhi kuthuthukise isikhathi sokwakha kanye nokusebenza kahle kwe-mortar.
Ukuhlakazeka: I-HPMC ingakha isixazululo se-colloidal emanzini, esingathuthukisa ukuhlakazeka phakathi kwezingxenye ze-mortar. Ukugeleza kwe-mortar akuhlobene nje kuphela nesilinganiso se-samente, isihlabathi kanye nezingxube, kodwa futhi kuhlobene eduze nokuhlakazeka kwalezi zingxenye. Ngokulungisa inani le-HPMC, izingxenye eziku-mortar zingahlakazeka ngokulinganayo, ngaleyo ndlela kuthuthukiswe ukugeleza.
Umphumela we-Gelling: I-HPMC ingakhuthaza ukusatshalaliswa okulinganayo kwezinhlayiya ku-mortar futhi ithuthukise ukuzinza kwesakhiwo sayo. Ngokuthuthukisa umphumela we-gelling, i-HPMC ingagcina uketshezi oluzinzile lwe-mortar ngesikhathi sokugcina isikhathi eside futhi igweme ukwehla koketshezi ngenxa yokubambezeleka kwesikhathi.
Umphumela wokuthuthukisa i-plasticity: Ukwengezwa kwe-HPMC kungathuthukisa futhi i-plasticity ye-mortar, okwenza kube lula ukuyisebenzisa futhi kube ne-plasticity engcono ngesikhathi senqubo yokwakha. Isibonelo, lapho uplasta udonga, ukugeleza okufanele kanye ne-plasticity kunganciphisa ukuvela kwemifantu futhi kuthuthukise ikhwalithi yokuplasta.
Ukusetshenziswa kwe-HPMC ekulungisweni kokugeleza kodaka okulungiselelwe kahle:
Ukulawulwa kwesilinganiso: Umthamo we-HPMC uthinta ngqo ukugeleza kwe-mortar. Ngokuvamile, uma inani lokwengeza le-HPMC lilinganiselwe, ukugeleza kanye nokugcinwa kwamanzi kwe-mortar kungathuthukiswa kakhulu. Kodwa-ke, i-HPMC eningi ingabangela ukuba i-viscosity ye-mortar ibe phezulu kakhulu, okubangela ukuthi inciphise ukugeleza kwayo. Ngakho-ke, inani le-HPMC engeziwe lidinga ukulawulwa ngokunembile ngokwezidingo ezithile ekusetshenzisweni.
Ukusebenzisana nezinye izinto ezixubile: Ngaphezu kwe-HPMC, ezinye izinto ezixubile zivame ukungezwa ku-mortar, njenge-superplasticizers, i-retarders, njll. Ukusebenzisana phakathi kwalezi zinto ezixubile kanye ne-HPMC kungalawula kangcono ukugeleza komotartar. Isibonelo, ama-superplasticizers anganciphisa inani lamanzi ku-mortar futhi athuthukise ukugeleza komotartar, kuyilapho i-HPMC ingathuthukisa ukugcinwa kwamanzi kwayo kanye nokusebenza kokwakhiwa kwayo ngenkathi igcina i-viscosity yomotartar.
Ukulungiswa kwezinhlobo ezahlukene ze-mortar: Izinhlobo ezahlukene ze-mortar zinezidingo ezahlukene ze-fluid. Isibonelo, i-plastering mortar inezidingo eziphezulu ze-fluid, kuyilapho i-masonry mortar inaka kakhulu ukubopha kwayo kanye nobukhulu bayo. Phakathi nale nqubo, inani kanye nohlobo lwe-HPMC eyengeziwe kudingeka kulungiselelwe futhi kulungiswe ngokwezidingo ze-mortar ezahlukene ukuqinisekisa ufluid kanye nebhalansi efanele.
Njengesengezo esivame ukusetshenziswa se-mortar,I-HPMCingalungisa ngempumelelo ukugeleza kodaka ngokujiya, ukugcinwa kwamanzi, ukuhlakazeka, i-gelling, njll. Izakhiwo zayo ezihlukile zenza udaka lusebenze kahle futhi luzinze ngesikhathi sokwakha. Kodwa-ke, umthamo we-HPMC udinga ukulungiswa ngokunembile ngokwezimo ezithile zokusetshenziswa ukuze kugwenywe ukusetshenziswa ngokweqile okuholela ekunciphiseni ukugeleza kodaka. Ngokuthuthuka okuqhubekayo kwezidingo zokusebenza kodaka embonini yokwakha, umphumela wokulawula we-HPMC unamathuba amaningi okusetshenziswa esikhathini esizayo.
Isikhathi sokuthunyelwe: Jan-10-2025