Ukufakwa kwezimbozo kubhekisele emandleni okuxhumanisa ukusakaza ngokulinganayo futhi ngokushelela ngemuva kokuhlangana, kanye nokuqeda ukungahambi kahle komhlaba okufana namamaki webhulashi kanye namamaki okubhula. Ukulinganisa kuthinta ngqo ukubukeka, iflethi kanye nekhwalithi yefilimu yokuhlanganisa, ngakho-ke ekwakhekeni kwama-coating, ukulungiselela izinga kuyisixhumanisi esibucayi kakhulu.I-Hydroxypropyl methylcellulose (HPMC), njengomuntu obaluleke kakhulu osuselwa emanzini kanye nosizo lwefilimu, kusetshenziswa kabanzi kuzimbobo. Akukwazi nje ukulungisa ukubonwa kokuhlanganiswa, kepha futhi kuthuthukisa kakhulu ukufakwa kwamandla okuhlanganisa.
1. Izakhiwo nemisebenzi ye-hydroxypropylylylylylylylylyllose
I-Hydroxypropyllykyl methylcellulose iyindlela esolule yamanzi polymer etholwe ukuguqulwa kwamakhemikhali nge-cellulose njengento eluhlaza. Isakhiwo saso samangqamuzana siqukethe womabili amaqembu ama-hydrophilic (anjenge-hydroxyl kanye ne-methyl) namaqembu we-hydrophobic (anjenge-propylene), okwenza kube ne-solubility enhle nokuhlakazeka kwamanzi. Ngenxa yokubonakala kwayo okuphezulu, izakhiwo ezinhle kakhulu ze-rheological kanye nezakhiwo ezinhle zefilimu, i-kimacell®HPMC ivame ukusetshenziswa emikhiqizweni esekwe emanzini anjengopende we-latex, izigqoko zokwakha, izinamathiseli, njll.
Ezambeni, i-HPMC, njengomuntu omkhulu, kungakhuphula ukwanda kwe-coating, lungisa i-Rheology ye-coating, futhi ikwenze kubonise ukuvelela okuhle ngesikhathi senqubo yokuhlanganisa. Ngokukhethekile, i-HPMC ingathuthukisa uxhaso lwe-coatity futhi yehlise ukungezwani komugqa wokuhlanganiswa ngesikhathi sokuhlanganiswa, ukuze ifilimu lokuhlanganisa kube lula ukusabalalisa ngokulinganayo futhi liqede izehlakalo zokuhlanganisa kanye namamaki webhulashi.
2. Indlela ye-hydroxypropyllylyl methylcellulose ukuthuthukisa ukufakwa kwezimbozo
Ukulungisa i-Viscosity kanye Rheology of Coatings
I-Hydroxypropyllylylylylyllose inyusa i-viscosity ye-coating futhi yenza ukunamathela kube nobukhulu obuthile, ngaleyo ndlela kwakha ukuhanjiswa okuthile ngesikhathi senqubo yokuhlangana, okuholela emamaki angajwayelekile ebusweni befilimu ehlanganayo. I-viscosity efanelekile ingenza ukuhlanganiswa ngokulinganayo kusatshalaliswe ngokulinganayo ngesikhathi sokuhlanganiswa, ukunciphisa ukuguquguquka kokugeleza kokugobhoza, futhi ngaleyo ndlela kuthuthukise izinga.
Yehlisa ukungezwani kwe-coating
Ngemuva kokuncibilika ekuhlanganiseni, i-hydroxypropylym methylcellulose inganciphisa ngempumelelo ukungezwani kwe-coating. Ukwehliswa kokungezwani komhlaba kungenza ifomu le-coating film i-liform film eyunifomu ebusweni be-substrate, ukunciphisa ukuhlanganiswa okungalingani okubangelwa ukungezwani kwengxabano. Ngasikhathi sinye, ukungezwani okuphansi okuphansi kusiza ukuhlanganiswa ukugeleza kangcono ngesikhathi sokuhlanganisa, ukugwema amamaki okuxubha kanye namamaki okugoqa.
Thuthukisa uketshezi lwefilimu yokuhlanganisa
Amaketanga ama-molecular of Kimacell®HPMC ku-coating angahlanganiswa nokwakha isakhiwo se-mesh, okwenza ukuhlanganiswa ukuze alondoloze isimo sokugeleza okufanayo ngesikhathi senqubo yokomisa, ukugwema ukuqhekeka noma ukungalingani kwe-coating ngenxa yokomiswa okusheshayo. Kungaqinisa nokugeleza ngesikhathi senqubo yokuhlanganisa ukuhlanganisa ukuqinisekisa ukuhlanganiswa okufanayo.
Umphumela weplastiki
Ukwakheka kwamangqamuzana kwe-hydroxypropyllllylylylylylk kuqukethe amaqembu athile ama-hydrophilic, angakha ama-hydrogen bond ngama-molecule wamanzi, ngaleyo ndlela athuthukise ukunganakwa kwenhlanganisela. Lo mthelela omanzi usiza ukuthuthukisa ukunamathela phakathi kokuhlanganiswa kanye nendawo engaphezulu komhlaba, futhi futhi uthuthukisa ukufakwa kombamba, okwenza ifilimu lokuhlanganisa lishelelezi futhi libushelele.
Thuthukisa izinga lokuhwamuka kokuhlanganiswa
Ngesikhathi senqubo yokomisa ye-coating, i-HPMC ingalawula ngempumelelo izinga lokuhwamuka kwamanzi. Ngokukhulula kancane amanzi, i-HPMC isiza ukugcina isikhathi eside sokugeleza ngesikhathi sokwakhiwa kwefilimu yokuhlanganisa, enikeza amawindi wesikhathi esithe xaxa sokulinganisa nokugwema ukwakheka kwezimbozo ezingalingani ngenxa yokumiswa kwangaphambi kokuwohloka kwangaphambi kokomiswa kwangaphambi kokuwohloka kwendawo yokuhlanganisa.
3. Ukusetshenziswa kwe-hydroxypropylll methylcellulose in Coatings
Igqoko elisekelwe emanzini
Ezinkotsheni ezisuselwa emanzini, i-HPMC ingasetshenziswa njengomkhulu ophambili ukuze ithuthukise ukunamathela kwe-coating kanye nokulinganisa izakhiwo. Ikakhulu ekwakhekeni okudingayo okudinga ukugcina isikhathi esivulekile eside, iqhaza le-HPMC libaluleke kakhulu. Kungathuthukisa uxhaso lwe-coatity, gwema amamaki okuxubha nemigqa kuma-coating, futhi uqinisekise indawo ebushelelezi ye-coating.
I-Architectural Coatings
Kwezembatho zezakhiwo, i-HPMC ayigcini nje ngokuthuthukisa ukufakwa kwama-coating, kepha futhi inokugcinwa kahle komswakama futhi ithuthukise ukuguquguquka kwefilimu yokuhlanganisa. Ngesikhathi sokwakha izimbobo zezakhiwo, i-HPMC ingathuthukisa ukunamathela kanye nokumelana nomthelela wokuhlanganisa futhi kwandise ukuqina kwefilimu yokuhlanganisa.
Izingubo eziphakeme
Izigqoko eziphakeme ezinama-glor-gloss zidinga ukuqedwa komhlaba omuhle kakhulu futhi zivelele. I-HPMC ingasusa ngempumelelo iziphambeko zangaphandle zezimbali ezinama-gloral aphezulu ngesikhathi sokwakhiwa ngokwenza ngcono uketshezi lwenhlanganisela nokunweba isikhathi esivulekile, ukuqinisekisa ukushelela kokuhlanganiswa.
Izimbobo zezimoto
Izimbobo zezimoto zidinga isicwebezelisi esiphezulu kanye neflethi. I-HPMC ingathuthukisa izinga lokuhlanganiswa, ukunciphisa ama-bubble, amamaki webhulashi nezinye iziphambeko kwifilimu yokuhlanganisa, futhi uqinisekise ikhwalithi nokubukeka kwe-coating.
4. Izinyathelo zokuqapha kanye nezinselelo ezisetshenziswayo
NokhoI-HPMCIngathuthukisa kakhulu ukufakwa kwezimbaza, kunezinyathelo ezithile zokusebenzisa ukusetshenziswa kwayo ku-Coatings. Okokuqala, ukugcwaliseka kwe-kimacell®HPMC kudinga ukulungiswa ngokuya ngohlobo, ifomula kanye nokusebenzisa izidingo zokuhlanganiswa. Ukugxila kakhulu kungadala ukuthi uketshezi lwenhlanganisela lube luphansi kakhulu, oluzothinta ukusebenza kokwakha. Okwesibili, inani le-HPMC elingeziwe kufanele linake ithonya lezinye izengezo nemibala. Ukungezwa ngokweqile kungadala ezinye izakhiwo zokuhlanganiswa ukuze zehle, njengokulukhuni kanye nokumelana kwamanzi. Ngakho-ke, ukukhethwa okunengqondo nokwakhiwa kwe-HPMC kuyisihluthulelo sokuqinisekisa ukusebenza kwe-coating.
I-Hydroxypropyll Methylcellulose ingathuthukisa ngempumelelo ukufakwa kwezimali ngokulungiswa kwe-viscoating, nokunciphisa ukungezwani, kanye nokwenza ngcono ukungezwani ngesikhathi senqubo yokuhlangana kanye nokwenza ngcono ukubukeka kwekhwalithi ye-coating. Ngesidingo esandayo sezimbali eziphezulu ezisuselwa emanzini embonini ye-Coating, ukusetshenziswa kwe-HPMC kuzokwandiswa okwengeziwe. Njengesengezo esisebenzayo sokulinganisa, nakanjani sizodlala indima ebalulekile ekunikezelweni kwenhlanganisela okuzayo.
Isikhathi Sokuposa: Jan-27-2025