IHydroxypropyl methylcellulose (HPMC) iyisengezo samakhemikhali esibalulekile esisetshenziswa kakhulu ezintweni zokwakha, ikakhulukazi ekwakhiweni kodaka. I-HPMC ithuthukisa kakhulu ukusebenza kokwakhiwa kanye nokusebenza kokugcina kodaka ngokulungisa izakhiwo zayo ze-rheological, ukugcinwa kwamanzi, ukumelana nokuqhekeka nezinye izici.
(1) Izakhiwo eziyisisekelo ze-HPMC
I-HPMC iyi-ether engeyona ionic cellulose etholwe ngokuguqulwa kwamakhemikhali kweselulosi. Inezici ezilandelayo ezibalulekile:
Ukugcinwa kwamanzi: I-HPMC ingathuthukisa kakhulu umthamo wokugcina amanzi wento.
Ukuqina komphumela: I-HPMC ingakhuphula i-viscosity yezinto.
I-Lubricity: Isiza ukuthuthukisa ukusebenza kwempahla.
Ukwakhiwa kwefilimu: Ukwakha ifilimu elincanyana phezu kwempahla ukuze kwandiswe ukuqina kwento.
(2) Indlela yokusebenza ye-HPMC odakeni
1. Thuthukisa ukugcinwa kwamanzi
Udaka ludinga ukugcina umswakama othile phakathi nenqubo yokwakha ukuze kuqinisekiswe ukuthi usimende ugcwele amanzi ngokuphelele. I-HPMC ingakhanga ama-molecule amanzi ngokusebenzisa isakhiwo sayo se-polar molecular, ngaleyo ndlela yakhe isakhiwo senethiwekhi odakeni, ivimbele ukuhwamuka okusheshayo nokuhamba kwamanzi. Lokhu kugcinwa kwamanzi kubaluleke kakhulu ekwehliseni imifantu eyomile yokuncipha odakeni kanye nokwenza ngcono amandla okubopha phakathi kodaka ne-substrate.
2. Thuthukisa izakhiwo ze-rheological
I-HPMC ingandisa kakhulu i-viscosity yodaka, inikeze izakhiwo ezinhle ze-rheological. Phakathi nenqubo yokwakha, lokhu kusiza ukuthuthukisa ukusebenza kanye nepulasitiki yodaka, ukunciphisa ukopha nokuhlukaniswa, nokuqinisekisa ukuthi udaka ngemuva kokwakhiwa lubushelelezi futhi luyisicaba. Ngesikhathi esifanayo, umphumela wokujiya we-HPMC unganikeza ukunamathela okuhle endaweni yokwakha eqondile futhi uvimbele udaka ekusheleleni.
3. Thuthukisa ukwakhiwa
I-HPMC inganikeza ukugcotshwa okuhle kakhulu, okwenza udaka lushelele ngesikhathi sokwakhiwa. Lokhu akugcini nje ngokuthuthukisa ukusebenza kahle kokwakhiwa, kodwa futhi kunciphisa umfutho wemisebenzi yezandla. I-HPMC ingabuye ithuthukise i-thixotropy yodaka, ikwazi ukugcina i-viscosity ephezulu lapho imile, isiza ukwakhiwa okuqondile, nokugcina uketshezi oluhle lapho inyakaza noma iphuma.
4. Nciphisa ukushwabana okomile nokuqhekeka
Umphumela wokugcina amanzi we-HPMC unganweba isikhathi sokugeleza kukasimende odakeni, ngaleyo ndlela kwehlise izinga lokushwabana elomile lodaka futhi kunciphise imifantu ebangelwa ukushwabana okomile. Ukwengeza, izakhiwo zefilimu ze-HPMC zingakha ifilimu yokuzivikela ngesikhathi sokuqina kodaka ukuze kuncishiswe ukulahlekelwa kwamanzi futhi ngaleyo ndlela kuvimbele ukuqhekeka endaweni yodaka.
(3) I-HPMC ithuthukisa ukusebenza kwezinhlobo ezahlukene zodaka
1. Udaka oluvamile
Phakathi kwezinsimbi ezivamile, i-HPMC iqinisekisa ukuthi ingaphezulu ledaka liyisicaba, libushelelezi futhi liboshwe kahle kungqimba oluyisisekelo ngemva kokwakhiwa ngokuthuthukisa ukugcinwa kwamanzi kanye noketshezi. Ngaphezu kwalokho, umsebenzi we-HPMC ubuye welule isikhathi sokusebenza sodaka, unikeze abasebenzi bokwakha isikhathi esanele sokwenza izinguquko kanye nokulungisa.
2. Udaka lokuzilinganisa
I-self-leveling mortar idinga ukuba ne-fluidity enhle kanye ne-viscosity ephezulu ukuze kuqinisekiswe izinga elizenzakalelayo phakathi nenqubo yokwakha. I-HPMC ithuthukisa ukugeleza kwezakhiwo zodaka ngokujiya nokugcinwa kwamanzi, okuwuvumela ukuba usakaze ngokushesha nangokushelela ngesikhathi sokwakha. Ngesikhathi esifanayo, i-HPMC ingathuthukisa ukusebenza kodaka lokunqanda ukopha, ivimbele amanzi ukuthi angafuduki aye phezulu ngesikhathi sokuqina kodaka, futhi yehlise ingcuphe yokuqhuma nokuqhekeka kwendawo.
3. Udaka lwe-insulation
I-insulation mortar idinga ukugcinwa kwamanzi okuhle kanye nokumelana nokuqhekeka ukuze kuthuthukiswe amandla okubopha phakathi kwesendlalelo se-insulation kanye nesendlalelo sesisekelo. Ukusetshenziswa kwe-HPMC kungathuthukisa ngempumelelo ukusebenza kwe-thermal insulation mortar, kuthuthukise ukumelana kwayo nokuqhekeka, futhi kuqinisekise ukuzinza kwesikhathi eside kwezinto zokufakwa ezishisayo.
(4) Izibonelo zokusetshenziswa kwe-HPMC odakeni
1. Udaka lokuhlanganisa amathayela
Udaka lwe-tile bonding ludinga ukuba nokunamathela okuhle nokusebenza kokwakha. Ngokuthuthukisa ukugcinwa kwamanzi kanye ne-viscosity yodaka, i-HPMC iqinisekisa ukuthi udaka lunokunamathela okwanele phakathi nenqubo yokwakha futhi inciphisa amathuba okugojwa kwamathayili nokuwa.
2. Udaka lokunamathisela
Udaka lokunamathisela ludinga indawo ebushelelezi kanye nokunamathela okuqinile. Ukujiya nokugcina amanzi imiphumela ye-HPMC yenza udaka oluplastalwayo lusakazwe ngokulinganayo endaweni eqondile ngesikhathi sokwakha, kunciphisa ukuwohloka nokuqhekeka.
(5) Isetshenziswa kanjani i-HPMC kanye nezinyathelo zokuphepha
1. Umthamo
Umthamo we-HPMC uvamise ukuba phakathi kuka-0.1% no-0.5% wesisindo esiphelele sodaka. Uma kusetshenziswe kakhulu, udaka luyoba ne-viscous kakhulu futhi kube nzima ukwakha; uma kusetshenziswe okuncane kakhulu, ngeke kusebenze njengoba kufanele.
2. Kuhlanganiswe nezinye izithasiselo
I-HPMC ivamise ukusetshenziswa kanye nezinye izithasiselo ezifana ne-cellulose ether, impushana yerabha, njll. ukuze kutholwe ukusebenza okungcono sekukonke.
3. Engeza i-oda
I-HPMC kufanele ixutshwe ngokulinganayo nezinye izinto eziyimpushana ezomile ngesikhathi senqubo yokuhlanganisa udaka, bese wengeza amanzi ugovuze. Le ndlela ingaqinisekisa ukusatshalaliswa okufanayo kwe-HPMC odakeni futhi kuzuze umphumela omuhle kakhulu.
IHydroxypropyl methylcellulose (HPMC) esesimendeni ithuthukisa ngokuphawulekayo ukusebenza okuphelele kodaka ngokuthuthukisa ukugcinwa kwamanzi, ukuthuthukisa izakhiwo ze-rheological, ukuthuthukisa ukusebenza kahle, ukunciphisa ukushwabana okomile nokuqhekeka. Njengesengezo esibalulekile samakhemikhali, akugcini nje ngokuhlangabezana nezidingo eziphezulu zokusebenza kwezinto zokwakha zanamuhla, kodwa futhi ikhuthaza ukuthuthukiswa kobuchwepheshe bokwakha udaka. Ngokuzayo, ngokuthuthukiswa okuqhubekayo kobuchwepheshe bokukhiqiza be-HPMC kanye nokwandiswa kwezinkundla zokufaka izicelo, indima yayo edaka nezinye izinto zokwakha izobaluleka kakhulu.
Isikhathi sokuthumela: Jun-17-2024