I-HPMC (i-Hydroxypropyl Methylcellulose) esetshenziswa odakeni lwengxube eyomile iyisengezo samakhemikhali esibalulekile, esisetshenziswa kakhulu njenge-thiener, i-ejenti egcina amanzi kanye ne-ejenti yokwakha ifilimu. I-HPMC iyi-ether engeyona ionic cellulose eyenziwe nge-cellulose yemvelo ngokuguqulwa kwamakhemikhali. Isetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi odakeni lwengxube eyomile.
1. Izakhiwo eziyisisekelo ze-HPMC
I-HPMC iyinhlanganisela ye-polymer esesimweni sempushana emhlophe noma emhlophe, enezici zokungabi nobuthi, ukungabi naphunga nokuncibilika okuhle. Ingancibilika emanzini abandayo ukuze yakhe isixazululo se-viscous esisobala noma esine-milky, futhi sinokuzinza okuhle nokunamathela. I-HPMC inezinto ezingezona i-ionic, ngakho-ke ingakwazi ukuzivumelanisa nezinhlobonhlobo zemidiya, ikakhulukazi ezindaweni ezine-alkaline. Isengakwazi ukugcina umsebenzi wayo futhi ayijwayele ukusabela kwamakhemikhali.
Izici eziyinhloko ze-HPMC zifaka:
Ukugcinwa kwamanzi: Kungagcina umswakama ezintweni, kunwebe isikhathi sokumisa, futhi kuthuthukise ubulula bokwakha.
Ukuqina komphumela: Ngokwandisa i-viscosity yodaka, ukusebenza kwayo kokwakhiwa kuyathuthukiswa ukuze kugwenywe ukuwohloka nokugeleza.
Umphumela wokugcoba: Thuthukisa ukusebenza kwempahla futhi wenze udaka lube bushelelezi phakathi nenqubo yokwakha.
Impahla yokwenza ifilimu: Ngesikhathi sokumisa udaka, ifilimu efanayo ingakhiwa, esiza ukuthuthukisa amandla ezinto ezibonakalayo.
2. Iqhaza le-HPMC kudaka oluxutshwe okomile
Kumaphrojekthi wokwakha, udaka oluxubile (olwaziwa nangokuthi i-premixed mortar) luyimpushana eyomile eyakhiwe ngokunembile efekthri. Ngesikhathi sokwakhiwa, idinga kuphela ukuxubana namanzi esizeni. I-HPMC ivamise ukungezwa ukuze kuthuthukiswe ukusebenza kwayo kokwakhiwa, kunwetshwe isikhathi sokusebenza futhi kuthuthukiswe ikhwalithi yomkhiqizo wokugcina. Ngokukhethekile, indima ye-HPMC odakeni oluxutshwe okomile ihlanganisa amaphuzu alandelayo:
Thuthukisa ukugcinwa kwamanzi
Esakhiweni, ukusatshalaliswa okufanayo kanye nokugcinwa kwamanzi kuyisihluthulelo sokuqinisekisa amandla awo, ukusebenza kwesibopho nokusebenza. Njenge-ejenti egcina amanzi, i-HPMC ingakhiya kahle amanzi odakeni futhi yehlise izinga lokulahleka kwamanzi. Lokhu kubaluleke kakhulu ezintweni ezifana nosimende negypsum ezidinga ukusabela kwe-hydration. Uma amanzi elahleka ngokushesha, impahla ingase ingakwazi ukuqedela ukusabela kwe-hydration, okuholela ekunciphiseni kwamandla noma imifantu. Ikakhulukazi ngaphansi kwezimo eziphakeme zokushisa, ezomile noma ezimunca kakhulu, umphumela wokugcina amanzi we-HPMC ungathuthukisa kakhulu ukusebenza kokwakhiwa kanye nekhwalithi yomkhiqizo oqediwe wodaka.
Thuthukisa ukusebenza kokwakha
Ukusebenza kodaka kuthinta ngqo ukusebenza kalula ngesikhathi senqubo yokwakha. I-HPMC ithuthukisa i-viscosity kanye nokuthambisa kodaka, okwenza kube lula ukusebenza ngesikhathi sokwakha. Kungakhathaliseki ukuthi liyakwalwa, liyasakazwa noma liyafuthwa, udaka oluqukethe i-HPMC lungaxhunywa ngokushelela futhi ngokulinganayo endaweni yokwakha, ngaleyo ndlela kuthuthukiswe ukusebenza kahle kokwakhiwa kanye nokunciphisa udoti wezinto ezibonakalayo.
Thuthukisa ukunamathela kanye nezakhiwo zokulwa nokuwohloka
Umthelela wokujiya we-HPMC uvumela udaka ukuthi lubambelele ngokuqinile ngesikhathi sokwakhiwa kwe-facade futhi alujwayele ukuhlehla noma ukushelela. Lokhu kubaluleke kakhulu ezimweni zohlelo ezifana nodaka lokuhlanganisa amathayela, udaka lwangaphakathi nolungaphandle lokuplasta odongeni. Ikakhulukazi lapho kwakhiwa ungqimba oluqinile lodaka, ukusebenza kokunamathela kwe-HPMC kungaqinisekisa ukuzinza kodaka futhi kugweme inkinga yokuchithwa kongqimba lodaka ngenxa yesisindo esifile eseqile.
Nweba isikhathi esivulekile
Ekwakhiweni kwangempela, isikhathi esivulekile (okungukuthi, isikhathi sokusebenza) sodaka sibalulekile ukuze kuqinisekiswe izinga lokwakha. Ikakhulukazi ezimeni zokwakha ezinkulu, uma udaka loma ngokushesha, kungase kube nzima kubasebenzi bokwakha ukuqeda yonke imisebenzi, okuholela ekungalingani kwekhwalithi yendawo. I-HPMC inganweba isikhathi esivulekile sodaka, iqinisekise ukuthi abasebenzi bokwakha banesikhathi esanele sokulungisa nokusebenza.
3. Izinzuzo zokusebenzisa i-HPMC
Ukuvumelana nezimo okubanzi
I-HPMC ingasetshenziswa kabanzi ezinhlotsheni ezehlukene zodaka oluxutshwe okomile, njengodaka lwamatshe, udaka olunamathelisa, okunamathelisa amathayela, udaka oluzilinganisa, njll. Kungakhathaliseki ukuthi isetshenziselwa izinto ezisekelwe kusimende noma ze-gypsum, ingadlala indima yokuzinzisa.
Ukwengeza okuphansi, ukusebenza kahle okuphezulu
Inani le-HPMC ngokuvamile lincane (cishe i-0.1% -0.5% ye-powder eyomile isiyonke), kodwa umphumela wayo wokuthuthukisa ukusebenza ubaluleke kakhulu. Lokhu kusho ukuthi ukusebenza kokwakhiwa kanye nekhwalithi yodaka kungathuthukiswa kakhulu ngaphandle kokwenyusa kakhulu izindleko.
Ayinobungane futhi ayinabuthi
I-HPMC ngokwayo ayinabo ubuthi, ayinaphunga, futhi ayingcolisi imvelo. Ngokuthuthukiswa kokuqwashisa ngemvelo, isidingo sezinto zokwakha eziluhlaza siyaqhubeka nokwanda. I-HPMC, njengesithasiselo samakhemikhali esiphephile nesihambisana nemvelo, ihlangabezana nezindinganiso zemvelo zezinto zokwakha zesimanje.
4. Izinyathelo zokuphepha zokusetshenziswa
Nakuba i-HPMC idlala indima ebalulekile odakeni oluxutshwe okomile, amaphuzu alandelayo kufanele aqashelwe ngesikhathi sokusetshenziswa:
Ukulawula ukunyibilika: I-HPMC idinga ukwengezwa kancane kancane emanzini ngesikhathi sokunyakaziswa ukuze kugwenywe ukuhlangana ngenxa yokuhlakazeka okungalingani, okuthinta umphumela wokugcina wodaka.
Umthelela wezinga lokushisa: Ukunyibilika kwe-HPMC kungase kuthinteke izinga lokushisa. Izinga lokushisa lamanzi eliphakeme kakhulu noma eliphansi kakhulu lingabangela izinguquko kuzinga lokuncibilika, ngaleyo ndlela kuthinte isikhathi sokwakha kanye nomthelela wodaka.
Inhlanganisela nezinye izithasiselo: I-HPMC ivamise ukusetshenziswa nezinye izithasiselo zamakhemikhali, njengezinciphisi zamanzi, ama-ejenti afaka umoya, njll. Lapho uklama ifomula, kufanele kuqashelwe ithonya elihlangene phakathi kwezingxenye ukugwema ukusabela okubi.
Ukusetshenziswa kwe-HPMC odakeni oluxutshwe okomile kunezinzuzo ezibalulekile. Ingathuthukisa ukusebenza okuphelele kodaka ngokuthuthukisa ukugcinwa kwamanzi, ukwandisa ukusebenza komsebenzi wokwakha, nokuthuthukisa ukunamathela. Ngokuthuthukiswa kokusebenza kahle kwezakhiwo kanye nezidingo zekhwalithi embonini yezokwakha, i-HPMC, njengesithasiselo samakhemikhali esibalulekile, izodlala indima ebaluleke kakhulu odakeni oluxutshwe okomile.
Isikhathi sokuthumela: Oct-09-2024