Ukusetshenziswa kwe-HPMC ezintweni zokufaka okushisayo

Ngokwephuculwa okuqhubekayo kwezidingo zokonga amandla, izinto zokufakwa kwezinto zokufakelwa ziyingxenye ebalulekile yezindonga zangaphandle, ophahleni, phansi kanye nezinye izingxenye, futhi ukusebenza kwazo kuthinta ngqo ukusebenza kahle kwesakhiwo kanye nenduduzo yesakhiwo. Eminyakeni yamuva nje, ukuthuthukiswa kobuchwepheshe bokufakwa kwe-thermal insulation, abacwaningi kanye nabakhiqizi baye baqhubeka nokuhlola izinto ezintsha zokufakwa kwezinsini kanye nezindlela zabo zokuguqulwa. Phakathi kwazo, i-hydroxypropyl methylcellulose (HPMC, Hydroxypropyl methylcellulose), njenge-celluble celluble depuletive, isetshenziswa kabanzi ekwakheni izinto zayo zokufaka ngenxa yokuqanjwa kwamafilimu okuhle kakhulu ngenxa yokuqothuka kwamafilimu abunjiwe ngenxa yezakhiwo zayo ezinhle kakhulu. , ikakhulukazi emikhakheni yezinhlelo zangaphandle zokufakwa kodonga, zodonga omile, ukumboza kanye nezinye izinkambu.

Izici eziyi-1.Basic ze-HPMC

I-HPMC iyi-cellulose ether etholwe ukuguqulwa kwamakhemikhali kwe-spractose yesitshalo semvelo. Izici zalo eziphambili zifaka:
I-Solubinity yamanzi: I-HPMC ingakha isixazululo se-colloidal eyunifomu emanzini ngo-fluodity omuhle nokuhlakazeka.
Ukuqina: Kunomphumela ophakeme kakhulu futhi kungakhulisa kakhulu ukubonakala koketshezi ngisho nokugxila okuphansi.
Izakhiwo ezenziwe ngefilimu: I-HPMC ingakha ifilimu elincanyana ebusweni be-substrate ukwandisa ukunamathela kwezinto zokufaka.
Ukugcinwa kwamanzi: Inomgcini wamanzi oqinile, ongavimba ngempumelelo ukuhwamuka kwangaphambi kwesikhathi kwamanzi futhi anwebe isikhathi sokwakha sezinto zokwakha.
Ukuguqulwa: Ngokushintsha ukwakheka kwamangqamuzana kwe-HPMC, i-solubility yayo, i-viscosity nezinye izakhiwo kungashintshwa ukuze kufezeke izidingo zezinto zokwehlukanisa ezahlukahlukene.
Lezi zici ezihlukile zinika amathuba abanzi we-HPMC okufaka isicelo ezintweni zokufaka okushisayo.

2.Iqhaza le-HPMC ezintweni zokufaka okushisayo

Ukuthuthukisa ukubopha nokunamathelisa
Kuzinhlelo zangaphandle zodonga zokufakwa odongeni, i-HPMC njenge-binder ingathuthukisa kakhulu ukunamathela phakathi kwezinto zokufaka kanye nodonga oluyisisekelo. Ukunxusa kwezinto zokwenziwa kwendabuko zendabuko ezifana nebhodi le-polystyrere foam (i-EPS) kanye nebhodi le-polystyrene elingezelwe (XPS) livame ukuthinteka yizici zangaphandle zemvelo, ezinjengezinguquko zokushisa. Ngokuthuthukisa ukunxusa kodaka noma okunamathelayo, i-HPMC ingathuthukisa ngempumelelo amandla okubopha phakathi kwezinto zokufaka kanye nesendlalelo sesisekelo, ivikele izinkinga ezinjengesendlalelo nokuqina kokuqina nokuqina kwesakhiwo sonke.

Thuthukisa ukusungulwa
Ukusebenza kwezokwakha kwezinto zokwehlukanisa izinto ezihlobene ngokuqondile nokusebenza kahle kokwakha kanye nomphumela. I-HPMC ingathuthukisa ukusebenza kokwakha kwezinto zokwakha, zinikeze uklusizo olufanele nokusebenza, zinciphise ukumelana ngesikhathi sokwakha, futhi ziqinisekise ukuthi abasebenzi bezokwakha bangaqedela imisebenzi yokwakha kahle. Isibonelo, ukungeza i-HPMC kuDome udaka kungathuthukisa ubukhulu bodaka futhi kwandise isikhathi sabo sokugcinwa komswakama, okwenza ukuthi lo mbumbulu makhuthake lapho ezokwakha kanye nokwenza ngcono ikhwalithi yokwakha.

Thuthukisa ukusebenza kokufakwa
I-HPMC inokugcinwa kwamanzi okuhle kakhulu, okungabambezeleka ukuhwamuka kwamanzi, okuvumela ukufakwa kwezinto zokufaka ukuba kuhlale kuthambe isikhathi eside, ngaleyo ndlela kuthuthukise amandla okubopha nge-substrate futhi ugweme ukomisa nokuqhekeka. Le mpahla ibaluleke kakhulu ezifundeni zesimo sezulu ezibandayo, njengoba iqinisekisa ukuthi udaka angahlakulela ngokuphelele izibopho zawo zokubopha ngesikhathi senqubo eqinile emazingeni okushisa aphansi.

Amanzi angangeni manzi nokulwa nokuguga
Ngokuhamba kwesikhathi, ukufakwa kungavezwa umswakama nemisebe yomswakama ye-UV, okubangela ukonakaliswa kokusebenza. I-HPMC inemisebenzi ethile yokulwa namanzi futhi i-anti-ageng futhi ingathuthukisa ukumelana nesimo sezulu kanye nokumelana kwe-UV kwezinto zokufaka izicelo. Ngokungeza inani elifanele le-HPMC, ukumelana kwamanzi kwezinto zokufakwa kwezinto zokufaka kungandiswa, kuvinjelwe ungqimba wokufaka kusuka emanzini okuvuvukala nokuvuvukala, futhi kuqinisekise ukuthi kugcina ukusebenza okuhle kakhulu kokufakelwa okushisayo isikhathi eside.

Thuthukisa ukuqina okushisayo
Ukwakheka kwamangqamuzana kwe-HPMC kuqukethe ama-hydroxypropyl kanye namaqembu we-methyl, okunikeza ukuqina okuhle okushisayo. Ezindaweni eziphakeme zokushisa, i-HPMC ingagcina ukuqina okuthile kwesakhiwo futhi akuboshwe kalula, ukugwema izinguquko ezinkulu ekusebenzeni kwezinto zokufakwa kwezinto zokushintshana. Ngakho-ke, kwezinye izinto zokufaka okushisayo ezisetshenziswa ezindaweni zokushisa okuphezulu, ukwengeza i-HPMC kusiza ukugcina ukuqina kokusebenza kokufakwa kokufakwa kwe-thermal.

3.Izibonelo ze-HPMC ze-HPMC ezintweni ezihlukile zokufakelwa kokufakwa kwe-thermal

Uhlelo lokufakwa odongeni lwangaphandle
Ezindaweni ezingaphandle kodonga wokufakelwa kodonga, i-HPMC ivame ukusetshenziswa kanye nezinye izengezo (ezifana nesimende, i-gypsum, njll.). Umsebenzi wayo oyinhloko ukukhulisa ubumbano noshukela wodaka, uthuthukise ukunamathela phakathi kwebhodi lokufaka kanye nesisekelo sodonga lwangaphandle, futhi unciphise izinkinga ezinjengezinguquko zokushisa kanye nomoya.

Inhlanganiso yodonga lwangaphandle
I-HPMC nayo isetshenziswa kabanzi emboni yokufakwa odongeni yangaphandle. Imigqomo yodonga lwangaphandle olungaphandle ludinga ukuba nokunamathela okuhle kanye nezakhiwo ezinhle zefilimu. I-HPMC ingathuthukisa ngempumelelo ukufana, ukunamathela kanye nokumelana kwamanzi kokuhlanganiswa, ukuqinisekisa ukuqina kwesikhathi eside kwe-coating futhi kungathintwa yimvelo.

udaka owomile
Udaka olomile luyinto ejwayelekile yokufakelwa. Ngokungeza i-HPMC, akunakuthuthukisa ukunxusa kodaka, kodwa futhi kuthuthukisa ukugcinwa komswakama ngesikhathi senqubo yokwakha, ukunweba isikhathi sokusebenza, futhi uthuthukise ukusebenziseka kodaka. Ikakhulu ezindaweni zokushisa eziphansi, ukugcinwa kwamanzi kwe-HPMC kungaqinisekisa umphumela omuhle wokubopha udaka.

Ukusetshenziswa kwe-HPMC ezintweni zokufaka insulal zokufakwa okushisayo kunokuthuthuka kokusebenza okubalulekile. Ngokuthuthukisa ukunamathela, ukuthuthukisa ukumiswa, ukuthuthukisa ukusebenza kwezithako, ukubhekana namanye amazwe kanye nezindawo zokulwa nokuguga, i-HPMC ingathuthukisa ngempumelelo ukusebenza okuphelele kwezinto zokufaka izinsizakusebenza, futhi kuthuthukisa imiphumela yokonga amandla. Njengezidingo zemboni yezokwakha zokuvikelwa kwemvelo kanye nokulondolozwa kwamandla ziyaqhubeka nokwanda, i-HPMC inamathemba okusebenza abanzi ezintweni ezenziwayo zokufakwa okushisayo futhi kufanelekile ukucwaninga okwengeziwe kanye nentuthuko.