IHydroxypropyl methylcellulose (HPMC) iwumsebenzi wezimboni oguquguqukayo osetshenziswa kakhulu ekwenziweni kwempushana odongeni, ikakhulukazi izinhlelo zokusebenza zasendlini nangaphandle.
I-HPMC powder isingeniso:
Incazelo nokwakheka:
I-Hydroxypropyl methylcellulose, ebizwa ngokuthi i-HPMC, i-ether ye-cellulose eguquliwe etholakala ku-cellulose yemvelo.Ihlanganiswa nge-cellulose eshintsha amakhemikhali, i-carbohydrate eyinkimbinkimbi etholakala ezindongeni zamangqamuzana ezitshalo.Ukuguqulwa kuhilela ukwethulwa kwamaqembu e-hydroxypropyl ne-methyl esakhiweni se-cellulose, okuholela ku-polymer encibilikayo futhi eguquguquka kakhulu.
Izakhiwo zomzimba namakhemikhali:
Ukunyibilika: I-HPMC iyancibilika emanzini, yakha isixazululo esicacile nesingenambala.I-Solubility ingalungiswa ngokushintsha i-degree of substitution (DS) phakathi nenqubo yokukhiqiza.
I-Viscosity: I-HPMC idlulisela i-viscosity elawulwayo nengaguquki esixazululweni.Lesi sakhiwo sibalulekile ekwakhiweni kwe-putty odongeni njengoba kuthinta ukusebenza nezici zokusetshenziswa kwento.
I-Thermal Gelation: I-HPMC ibonisa ukugeleza okushisayo, okusho ukuthi ingakha ijeli uma ishisa.Lesi sakhiwo sibalulekile ezinhlelweni ezithile lapho kudingeka khona i-gelling.
Ukusetshenziswa kwe-HPMC ku-wall putty:
I-wall putty yangaphakathi:
1. Ukuhlanganisa nokunamathela:
I-HPMC ithuthukisa izakhiwo zokubopha zamapulangwe angaphakathi odongeni, iqinisekisa ukunamathela okungcono kuma-substrates afana nokhonkolo, i-stucco noma i-drywall.
Isakhiwo se-cellulose esilungisiwe se-HPMC sakha ifilimu elincanyana phezulu, elihlinzeka ngesibopho esiqinile nesihlala isikhathi eside.
2. Ukucutshungulwa kanye nokusebenziseka kalula:
I-viscosity elawulwayo ye-HPMC inika i-putty ukusebenza okuhle kakhulu, ukuyivumela ukuthi isetshenziswe ngokushelela futhi kalula ezindaweni zangaphakathi.
Ivimbela ukuhlehla kanye nokuconsa ngesikhathi sokufaka isicelo futhi iqinisekisa ukumbozwa okufanayo.
3. Ukugcinwa kwamanzi:
I-HPMC isebenza njenge-ejenti egcina amanzi, ivimbela ukuhwamuka kwamanzi ngokushesha phakathi nesigaba sokuphulukisa.Lokhu kusiza ukuthuthukisa i-hydration ye-putty, okuholela ekuthuthukisweni kwamandla okungcono.
I-wall putty yangaphandle:
1. Ukumelana nesimo sezulu:
I-HPMC ithuthukisa ukumelana nesimo sezulu kwama-putty odonga angaphandle futhi ivikela emiphumeleni emibi yokukhanya kwelanga, imvula kanye nokushintsha kwezinga lokushisa.
Ifilimu ye-polymer eyakhiwe yi-HPMC isebenza njengesithiyo, ivimbela ukungena komswakama futhi igcine ubuqotho be-coating.
2. Ukumelana nokuqhekeka:
Ukuvumelana nezimo kwe-HPMC kunomthelela ekuphikiseni ukuqhekeka kwe-putty yangaphandle yodonga.Ivumela ukunyakaza kwe-substrate ngaphandle kokuthinta ubuqotho be-coating.
Lesi sakhiwo sibalulekile ezinhlelweni zangaphandle ezivezwe ekucindezelekeni kwemvelo.
3. Ukuqina:
I-HPMC ithuthukisa ukuqina kukonke kwe-putty yangaphandle ngokuthuthukisa ukumelana kwayo nemihuzuko, umthelela kanye nokuchayeka kumakhemikhali.
Ifilimu evikelayo eyakhiwe yi-HPMC isiza ukunweba impilo yokumboza futhi inciphise isidingo sokugcinwa njalo.
Izinzuzo zokusebenzisa i-HPMC ku-wall putty:
1. Ikhwalithi ezinzile:
I-HPMC iqinisekisa ukuthi ukwakheka kwe-wall putty kuyikhwalithi engaguquki futhi kuhlangabezana namazinga okusebenza adingekayo.
2. Thuthukisa ukusebenza:
I-viscosity elawulwayo ye-HPMC inikeza ukucutshungulwa okungcono, okwenza inqubo yohlelo lokusebenza isebenze kahle futhi isebenziseke kalula.
3. Thuthukisa ukunamathela:
Izakhiwo zokunamathela ze-HPMC zifaka isandla ekunamatheleni okuhle kakhulu, okuqinisekisa ukuthi i-putty inamathela kahle ezinhlobonhlobo zama-substrates.
4. Ukuhlukahluka:
I-HPMC iguquguquka futhi ingasetshenziswa ekwakhiweni okuhlukahlukene futhi ingenziwa ngendlela oyifisayo ukuze ihlangabezane nezidingo ezithile zephrojekthi.
Ekuphetheni:
I-Hydroxypropyl methylcellulose (HPMC) powder iyisithako esiyinhloko kumafomula we-putty wangaphakathi nangaphandle.Izakhiwo zayo eziyingqayizivele, ezihlanganisa ukuncibilika, ukulawulwa kwe-viscosity namandla okwenza ifilimu, kuyenza ilungele ukuthuthukisa ukusebenza nokuqina kwezingubo zodonga.Kungakhathaliseki ukuthi ifakwe endlini noma ngaphandle, ama- putty odonga aqukethe i-HPMC ahlinzeka ngekhwalithi engaguquki, ukusebenza okuthuthukisiwe kohlelo lokusebenza kanye nokuvikela okuhlala isikhathi eside ezicini zemvelo.Njengoba imboni yezokwakha iqhubeka nokuvela, indima ye-HPMC ekwakhiweni kwe-wall putty isalokhu ibalulekile ekuzuzeni ukuqedwa kwekhwalithi ephezulu nokukhuthazela.
Isikhathi sokuthumela: Jan-25-2024