I-HPMC (Hydroxypropyl Methylcellulose) yi-ether engeyona eye-cellulose esetshenziswayo esetshenziswa kabanzi ekwakheni, umuthi, ukudla, amakhemikhali ansuku zonke kanye nezinye izimboni. Ngokwendlela yayo yokuchithwa kanye nezimpawu zohlelo lokusebenza, i-HPMC ingahlukaniswa ngezinhlobo ezimbili: uhlobo olusheshayo nohlobo lokuncibilika olushisayo. Kunokwehluka okukhulu phakathi kwalokhu okubili ngokwenqubo yokukhiqiza, izimo zokuqothula kanye nezimo zohlelo lokusebenza.
1. I-HPMC esheshayo
I-HPMC esheshayo, ebizwa nangokuthi uhlobo olubandayo lwamanzi alukhuni, lungashintsha ngokushesha emanzini abandayo ukwakha ikhambi le-colloidal elibonakalayo. Izici zalo eziphambili zimi ngokulandelayo:
1.1. Ubuhlakaniselo
I-HPMC esheshayo ibonisa i-soubity enhle kakhulu emanzini abandayo futhi iyahlakazeka ngokushesha lapho ivezwa emanzini. Ingancibilika ngesikhathi esifushane ukwakha isixazululo esifanayo, imvamisa ngaphandle kwesidingo sokushisa. Isixazululo saso esinamanzi sinokuthula okuhle, ukuqina kanye namandla okulungiswa kwe-viscosity kanye ne-viscosity.
1.2. Izimo Zokusebenza
I-HPMC esheshayo isetshenziswa ikakhulukazi ezimweni ezidinga ukuchithwa okusheshayo kanye nokwakheka kwesisombululo. Izindawo ezijwayelekile zohlelo lokusebenza zifaka:
Inkambu Yokwakha: Isetshenziswa njenge-ejenti yokugcina amanzi kanye ne-ejenti yokuqina kwezinto zokwenziwa komoya kanye nemikhiqizo ye-gypsum ukusiza ukuthuthukisa ukusebenza kokwakha.
Imikhiqizo yamakhemikhali yansuku zonke: ezinjengezihlanzi, ama-shampoos, izimonyo, njll.
Imboni yezemithi: Isetshenziswa njenge-ejenti eyakha amafilimu, ukunamathela, njll. Amathebhulethi. Ingancishiswa ngokushesha emanzini abandayo ukwenza lula ukukhiqizwa kwamalungiselelo.
1.3. Izinzuzo
Inciphise ngokushesha futhi ilungele izimo ezibandayo zokucubungula.
Kulula ukufaka isicelo nobubanzi bokusetshenziswa.
Isixazululo sinokuthula okuphezulu nokuqina okuhle.
2. I-Hot Melt HPMC
I-HOT-MELT HPMC, eyaziwa nangokuthi uhlobo olushisayo lwe-soluble ancibilikile noma uhlobo lokuzilibazisa, kufanele luchithwe ngokuphelele emanzini ashisayo, noma kungadinga isikhathi eside sokuqothula emanzini. Izici zalo zimi ngokulandelayo:
2.1. Ubuhlakaniselo
Ukukhubazeka kokuziphatha kwe-HOT-Melt HPMC kuhluke kakhulu kulolo hlobo olusheshayo. Emanzini abandayo, hot-lyt hpmc distreses kuphela kepha ayincibiliki. Kuzoncibilika kuphela futhi kwakha isisombululo lapho kufuthelwa emazingeni okushisa athile (imvamisa cishe ngo-60 ° C). Uma kungezwe emanzini abandayo futhi kushukunyiswa ngokuqhubekayo, i-HPMC izodonsa kancane kancane amanzi bese iqala ukuncibilikisa, kepha inqubo ihamba kancane.
2.2. Izimo Zokusebenza
I-HOT-MELT HPMC isetshenziswa ikakhulukazi ezimweni lapho isikhathi sokuchithwa noma izimo ezithile zokucubungula ezishisayo zidinga ukulawulwa. Izindawo ezijwayelekile zohlelo lokusebenza zifaka:
Izinto zokwakha: njengokunamathela kokwakha, ukufakwa kodaka, njll.
Imboni yezemithi: Ezifana nezinto zokwakha amaphilisi wokukhipha okuqhubekayo, njll.
Imboni ye-Coating: Isetshenziselwa izinhlelo zokusebenza ze-coating ngaphansi kwezinye izimo ezikhethekile zokushisa ezikhethekile ukuqinisekisa ukwakheka okuhle kwefilimu nokuqina ngesikhathi sokwakha.
2.3. Izinzuzo
Kungabambezela ukuqedwa futhi kufanelekile ngezikhathi ezinezidingo ezikhethekile ngejubane lokuchitheka.
Kuvimbela ukuhlangana kwamanzi ebandayo futhi kunokusebenza okuhle kokuphrinta.
Ilungele ukucubungula okushisayo noma izinhlelo zokusebenza lapho kudingeka khona inqubo yokuchithwa kwenqubo.
3. Umehluko omkhulu phakathi kohlobo olusheshayo nohlobo lokuncibilika olushisayo
3.1. Izindlela ezahlukahlukene zokuchithwa
I-HPMC esheshayo: Ingancibilika ngokushesha emanzini abandayo ukwakha isixazululo esibonakalayo, okulula futhi okusheshayo ukusisebenzisa.
I-Hot-Melt HPMC: Idinga ukuchithwa emanzini ashisayo noma idinga ukuchinjiswa ngokuphelele emanzini abandayo isikhathi eside, esilungele ezinye izidingo ezithile zokulawulwa kokuqothula.
3.2. Umehluko ezinhlelweni zohlelo lokusebenza
Ngenxa yezimpawu zayo ezisheshayo zokuchithwa, i-HPMC esheshayo ilungele izimo lapho isixazululo kufanele sakhiwe ngokushesha, njengokulungiselela umkhiqizo wamakhemikhali nsuku zonke. I-HOT-MELT HPMC isetshenziswa kakhulu ezimweni lapho kudilizwa khona ukuqedwa okubambezelekile, ikakhulukazi ezindaweni zokushisa okushisa kakhulu noma ezindaweni ezinezidingo eziqinile zokuqothula isikhathi.
3.3. Umehluko kwinqubo yomkhiqizo
Ngesikhathi senqubo yokukhiqiza, i-HPMC esheshayo iguqulwa ngamakhemikhali ukuze ichithe ngokushesha emanzini abandayo. I-HOT-MELT HPMC igcina izakhiwo zayo zokuqala futhi kufanele ichithwe emanzini ashisayo. Ngakho-ke, kuzinhlelo zokusebenza zangempela zokukhiqiza, kuyadingeka ukuthi ukhethe uhlobo lwe-HPMC olufanele ngokuya ngemibandela yenqubo ehlukene nezidingo zomkhiqizo.
4. Izinto ongazibona lapho ukhetha i-HPMC
Lapho ukhetha ukusebenzisa i-HPMC esheshayo noma eshisayo, udinga ukwenza isahlulelo ngokususelwa kwizidingo ezithile zesicelo:
Ngezimo ezidinga ukuchithwa okusheshayo: njengezinto zokwakha ezidinga ukusetshenziselwa ngokushesha ngesikhathi sokukhiqiza, noma imikhiqizo yamakhemikhali yansuku zonke elungiselelwe ngokushesha, i-HPMC esheshayo esuswayo kufanele ikhethwe.
Ngezimo ezidinga ukuhlukaniswa okubambezelekile noma ukucubungula okushisayo: ezifana nodaka, ukumboza, noma amaphilisi wokukhishwa kwezidakamizwa adinga ukulawula izinga lokuchithwa ngesikhathi sokwakha, i-HPMC eshisayo kufanele ikhethwe.
Kunomehluko osobala ekusebenzeni kokuchithwa kanye nezinkundla zohlelo lokusebenza phakathi kwe-HPMC esheshayo ne-Hot-Melt HPMC. Uhlobo olusheshayo lufanele izinhlelo zokusebenza ezidinga ukuqondiswa okusheshayo, ngenkathi uhlobo lokuncibilika olushisayo lufanelekile ngezimo ezidinga ukuchitheka okubambezelekile noma ukucubungula okubambezelayo. Kuzinhlelo ezithile, ukhetha uhlobo olufanele lwe-HPMC lungathuthukisa ukusebenza kahle kokukhiqiza futhi uthuthukise ukusebenza komkhiqizo. Ngakho-ke, ekukhiqizweni kwangempela nasekusetshenzisweni, kuyadingeka ukuthi ukhethe kahle uhlobo lwe-HPMC olususelwa kwimibandela ethile yenqubo kanye nezidingo zomkhiqizo.
Isikhathi sePosi: Sep-25-2024