Izakhiwo zokwakha ifilimu ze-industrial-grade hydroxypropyl methylcellulose (HPMC) ziyisici esibalulekile ekusetshenzisweni kwayo kabanzi emikhakheni yezicelo eziningi. I-HPMC iyi-ether ye-cellulose encibilikayo emanzini esetshenziswa kakhulu embonini. Izakhiwo zayo zokwenza ifilimu zibandakanya izakhiwo zemishini, izakhiwo ze-optical, ukuzinza kwamakhemikhali, ukuhambisana nezinye izithako, nezinye izici eziningi.
1. Indlela yokwenza ifilimu
I-HPMC incibilika emanzini ukuze yakhe isixazululo se-colloidal esisobala. Ngemva kokuba amanzi ehwamukile, ama-molecule e-HPMC esixazululweni ahlela kabusha futhi axhumane ukuze akhe ifilimu eqhubekayo enamandla athile kanye nokuqina. Ukuba khona kwamaqembu e-hydroxypropyl (-CH2CHOHCH3) kanye ne-methyl (-CH3) ochungechungeni lwamangqamuzana e-HPMC kunikeza ifilimu amandla omshini amahle kakhulu kanye nezinga elithile lokuguquguquka.
2. Izakhiwo zemishini
Amandla kanye ductility
Amafilimu e-HPMC abonisa amandla aqinile aphezulu kanye ne-ductility futhi angamelana nezingcindezi ezithile zemishini ngaphandle kokuphuka. Lezi zakhiwo zemishini zihlobene nesisindo samangqamuzana, izinga lokushintshwa, kanye nokugxila kwesisombululo se-HPMC. I-HPMC enesisindo se-molecular ephakeme kanye nezinga lokushintshwa ngokuvamile yenza amafilimu aqinile futhi aqinile. Lokhu kwenza i-HPMC ibaluleke kakhulu ezinhlelweni ezidinga amandla aphezulu emishini, njengezinto zokwakha, okokunamathela, namaphilisi emithi.
Ukunamathela
Amafilimu e-HPMC anokunamathela okuhle futhi angakwazi ukunamathela kahle ezindaweni ezihlukahlukene ze-substrate, njengephepha, insimbi, ingilazi, nepulasitiki. Lesi sakhiwo sikwenza ukuthi kusetshenziswe kabanzi ekukhoneni nasekunamathiseleni. Ukunamathela kuphinde kuthinteke ekugxilweni kwesisombululo kanye nezimo zokomisa.
3. Izakhiwo ze-Optical
Amafilimu e-HPMC avamise ukuba sobala noma akhanye futhi anezici ezinhle kakhulu zokubona. Ukucaca kwala mafilimu kuncike ikakhulukazi ekufaneni kwesixazululo, izimo zokomisa, kanye nenani lamabhamuza amancane angase avele phakathi nenqubo yokwakhiwa kwefilimu. Ukukhanya okuphezulu kwenza i-HPMC ibe wusizo kakhulu ezinhlelweni ezidinga ukubhekwa okubonakalayo, okufana nokupakishwa kokudla, okokumbozwa kwezidakamizwa, nezingubo zokuzivikela.
4. Ukuzinza kwamakhemikhali
Ukumelana namanzi
Amafilimu e-HPMC anezinga elithile lokumelana namanzi. Nakuba i-HPMC ngokwayo inyibilika emanzini, isakhiwo ngemva kokwakheka kwefilimu asincibiliki kalula lapho sichayeka emanzini. Lesi sakhiwo sinenzuzo ezinhlelweni eziningi, njengama-putty wokwakha, izinto zokunamathisela, kanye nama-coatings asekelwe emanzini. Kodwa-ke, ukumelana kwamanzi akukona ngokuphelele, futhi ukucwiliswa isikhathi eside emanzini kungabangela ukuvuvukala noma ukuphuka kwefilimu.
Ukumelana namakhemikhali
Ifilimu ye-HPMC inokumelana okuhle namakhemikhali ahlukahlukene, ikakhulukazi ezindaweni ezingathathi hlangothi ze-acid-base. Lokhu kuyenza ifanelekele izindawo ezithile ezonakalisayo, njengezimbotshana namafilimu okuvikela embonini yamakhemikhali. Ukuzinza kwamakhemikhali efilimu ye-HPMC kuphinde kuthinteke ngezinga layo lokuphambana nendawo ezungezile esetshenziswa kuyo.
5. Izimo zokwenza ifilimu
Isixazululo sokuhlushwa
Ukugxiliswa kwesixazululo kuthinta ngokuqondile ikhwalithi yokwenza ifilimu ye-HPMC kanye nezakhiwo zefilimu. Ngokuvamile, ukugxila okuphezulu kwezixazululo ze-HPMC kwakha amafilimu ashubile nanamandla. Kodwa-ke, ukugxila okuphezulu kakhulu kungabangela i-viscosity eyeqile yesisombululo, okwenza kube nzima ukusebenzisa ngokulinganayo.
Izimo zokomisa
Ijubane lokumisa kanye nezinga lokushisa linomthelela omkhulu ekwakhiweni nasezindaweni zefilimu. Amazinga okushisa aphezulu okomisa kanye nesivinini sokumisa ngokushesha ngokuvamile kuholela ekwakhekeni kwamabhamuza efilimu, okuthinta ukucaca kanye nezakhiwo zemishini zefilimu. Inqubo yokomisa kancane isiza ukwakha ifilimu efanayo, kodwa ingase ibangele ukuguquguquka okwanele kwe-solvent, kuthinte ikhwalithi yefilimu.
6. Ukuhambisana nezinye izithako
Ifilimu ye-HPMC ihambisana kahle nezinhlobonhlobo zezithasiselo kanye nezinto ezisebenzayo, njengama-plasticizers, ama-crosslinkers, ama-fillers, njll. Lokhu kuhambisana kuvumela i-HPMC ukuthi isetshenziswe kabanzi ekulungiseleleni izinto eziyinhlanganisela noma izigqoko ezisebenzayo. Isibonelo, ukwengeza ama-plasticizers kungathuthukisa ukuguquguquka kwefilimu, kuyilapho ama-agent axhumanisa ama-cross-linking angandisa amandla nokumelana kwamanzi kwefilimu.
7. Izindawo zokufaka izicelo
Izinto zokwakha
Ezinto zokwakha, amafilimu e-HPMC asetshenziswa odakeni oluxutshwe okomile, i-putty, i-coatings neminye imikhiqizo. Izakhiwo zayo zokwenza ifilimu zingathuthukisa ukunamathela, ukumelana nokuqhekeka nokumelana namanzi kwemikhiqizo.
Ezemithi
Emkhakheni wokwenza imithi, i-HPMC isetshenziswa njengento yokuhlanganisa amaphilisi emithi. Izakhiwo zayo zokwenza ifilimu zingalawula ngempumelelo izinga lokukhululwa kwezidakamizwa futhi zithuthukise ukuzinza nokusebenza kwezidakamizwa.
Imboni yokudla
Amafilimu e-HPMC asetshenziswa njengezinto zokupakisha ezidliwayo embonini yokudla ezinezakhiwo ezinhle zokuvimbela nokuphepha.
Ama-coatings nama-adhesives
Ukunamathela nokucaca kwamafilimu e-HPMC kuwenza abe ama-substrates enamathela afanelekile, futhi asetshenziswa kakhulu ezimbonini zokumboza nezokupakisha.
8. Ubungane bemvelo
I-HPMC iwumkhiqizo oshintshiwe osuselwe ku-cellulose yemvelo. Inqubo yayo yokwenza ifilimu ayidingi izincibilikisi eziyingozi futhi inokubola okuhle kwe-biodegradability kanye nobungane bemvelo. Lokhu kwenza kube nokubaluleka okukhulu ekuthuthukisweni kwamakhemikhali aluhlaza kanye nezinto ezisimeme.
Izakhiwo zokwakha ifilimu ze-HPMC yezinga lezimboni ziyenza ibe yinto ebaluleke kakhulu ekusetshenzisweni okuhlukahlukene. Izinzuzo zayo emandleni emishini, izakhiwo ze-optical, ukuzinza kwamakhemikhali, nokuhambisana kahle nezinye izinto kunikeza ububanzi obubanzi bekhono lokufaka isicelo. Kungakhathaliseki ukuthi kusezinto zokwakha, kwezemithi, ekufakweni kokudla, noma kuma-coatings nama-adhesives, i-HPMC ibonise ukusebenza okuhle kakhulu. Ngokuthuthuka kwesayensi nobuchwepheshe, ubuchwepheshe bokwenza amafilimu kanye nezindawo ezisetshenziswayo ze-HPMC zizoqhubeka nokwanda, kugqugquzelwe ukuthuthukiswa kwezinhlelo zokusebenza ezintsha.
Isikhathi sokuthumela: Jun-29-2024