I-Hydroxypropyl methylcellulose (HPMC), njengesengezo sezinto ezibalulekile zokwakha, kusetshenziswa kabanzi ejotsheni le-porcelain, ikakhulukazi kwifomula yegeyimu e-Dry Post Porcelain. Akunakuthuthukisa ukusebenza kokwakha kuphela kwe-coating, kepha futhi kuthuthukisa ukumelana kwamanzi, ukunamathela nokusebenza kwe-coating.
1. Izakhiwo ze-hydroxypropyllyll methylcellulose
I-Hydroxypropylm methylcellulose iyinhlangano esondelana yamanzi polymer eguqulwe kusuka kwisitshalo semvelo se-cellulose. Izici zalo eziphambili zifaka:
Ukuqina:I-KimaCell®hHPMC ingakhulisa kakhulu ukubonakala kwe-coating, okwenza ukuhlanganiswa okuzinzile ngesikhathi sokwakha.
I-Solubity yamanzi:Ine-solubility enhle yamanzi futhi ingakha isixazululo esizinzile emanzini.
Impahla eyakha ifilimu:Kungakha ifilimu efanayo futhi kuthuthukise ubushelelezi obukhona nobunye bokufana kwe-coating.
Adhesion:Thuthukisa ukunamathela kokuhlanganiswa kobuso besisekelo (njengosimende, ubumbano, izinkuni, njll).
Thuthukisa ukusebenziseka kwe-coating:Ingaguqula uketshezi nokugcinwa kwamanzi kwe-powder coating eyomile, ukunweba isikhathi sokwakha, nokugwema ukoma ngaphambi kwesikhathi.
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Kupende okomile we-powder powl-like, i-hpmc ikakhulukazi idlala izindima ezilandelayo:
Ukuqina nokuguqula i-viscosity:Umphumela wokuqina we-HPMC wenza upende ube ne-Rhelogy enhle ngesikhathi sokulungiselela nokusebenzisa, futhi akulula ukukhiqiza i-sagging.
Ukwenza ngcono ukusebenza kokwakha:Ngokushintsha ubushelelezi kanye namanzi abamba umthamo wopende, i-HPMC ingathuthukisa ukusebenza ngesikhathi sokwakha, ikakhulukazi ekushiseni okuphezulu noma endaweni eyomile, kunganwebeka ngempumelelo isikhathi esivulekile sopende, okwenza ukuthi kube lula ukulusebenzisa.
Ukuthuthukisa Ukunamathela:I-HPMC ingathuthukisa ukunamathela phakathi kopende kanye ne-substrate, ikakhulukazi kuma-substrates kasimende noma ama-masontrates anamandla, ukuhlinzeka ngokunamathela okuqinile futhi kuncishiswe yinto yokuchitheka ngopende.
Ukuvimbela Ukudanga kanye Nokwehlukaniswa:I-HPMC inezindawo ezinhle zokumiswa, ezingakugwema ngempumelelo ukupenda kwe-powder eyomile ngesikhathi sokugcina futhi kuqinisekiswe ukufana ngopende.
Ukuthuthukisa ukumelana kwamanzi nokumelana nokuqhekeka:I-HPMC ingathuthukisa ukumelana kwamanzi kwama-coating, yandisa ukumelana nokuqhekeka kwe-coating, futhi yenza ukuhlanganiswa okuzinzile lapho imanzi noma imvelo yangaphandle ishintsha kakhulu.
I-3. Ifomula ejwayelekile yepende eli-dry powder mbumbulu
I-Dry Powder Moer Persulain Paint imvamisa iqukethe izinto eziphambili ezilandelayo:
Ama-Inorganic Fiffers:njenge-talcum powder, i-calcium esindayo ye-calcium, njll. Lezi zinhlanganisela zisetshenziselwa ukulungisa ukuthungwa nobulukhuni bopende futhi kusize ukunamathela ukuze uthole umphumela omuhle ongaphezulu.
Resin noma i-emulsion:Ama-resins asetshenziswa kaningi afaka i-acrylic resin, i-polyurethane resin, njll., Okungakhulisa ukunamathela, ubunzima kanye nokuphikiswa kwesimo sezulu ngopende.
I-Cellulose eguquliwe:Njenge-HPMC, umsebenzi oyinhloko walolu hlobo lwento ukuguqula i-viscosity, uketshezi, ukusebenza kanye nokuqina kopende.
Umbala:Njengombala we-pigment, esetshenziselwa ukulungisa umbala wopende, okujwayelekile yiTitanium dioxide, i-carbon emnyama, njll.
Okulondoloziwe:Kusetshenziselwa ukuvimba ukukhula kwama-microorganisms kupende futhi kuqinisekise impilo yenkonzo yopende.
I-Plistic kanye ne-Elent Yezinga:isetshenziselwe ukuthuthukisa ubushelelezi bendawo yokuhlanganisa futhi bagweme ukuthungwa okungajwayelekile endaweni yokuhlangana.
4. Inani kanye nenani le-HPMC ependweni olomile we-powder mbumbulu
Ku-Persitain e-Dry Powder Powder Personain, inani le-HPMC elingezwe ngokuvamile ama-akhawunti acishe abe ngu-0.5% -2% wefomula yonke yopende. Isilinganiso esithile sincike ekusebenzeni okudingekayo kokuhlanganisa. Lokhu okulandelayo kuyisilinganiso esijwayelekile sefomula (ukuthatha i-10 kg eyomile impuphu ukuhlanganiswa njengesibonelo):
I-Inorganic Filler (i-Talcum Powder, i-calcium esindayo ye-calcium, njll.):cishe ngo-6-7 kg
Resin:cishe 1.5-2 kg
I-Hydroxypropyl methylcellulose (HPMC):cishe 0.05-0.2 kg
Umbala (njenge-titanium dioxide):cishe 0.5-1 kg
Okulondoloziwe:cishe 0.05 kg
I-Plistic kanye ne-Elent Yezinga:cishe 0.1 kg
Ukulungiswa okuthile kwefomula kufanele kunqunywe ngokuya ngezidingo ezahlukahlukene zokwakha kanye nezidingo zokusebenza, ikakhulukazi ngaphansi kwezimo zesimo sezulu sezifunda ezahlukahlukene, inani le-HPMC elisetshenzisiwe lidinga ukulungiswa ngokufanele.
5. Ukusetshenziswa kanye nokuqapha
Lapho usebenzisa i-HPMC, kunconywa ukulandela lezi zinyathelo ezilandelayo:
I-Pre-Wetting ngaphambi kokuxubanisa: I-KimaCell®HPMC i-powder kufanele ihlanganiswe namanzi ngaphambi kokungeza ezinye izinto ezingavuthiwe, ukuze ikwazi ukudonsa ngokugcwele amanzi futhi ikhule ngaphambi kokufaka ezinye izithako, ukuze igweme i-HPMC agglomeration.
Ukungezwa okuhamba kancane:Lapho uxuba ezinye i-powder eyomile,I-HPMCkufanele ingezwe kancane ukugwema ukuchithwa okungaphelele ngenxa yokungezwa okusheshayo kakhulu.
Kuxutshwe kahle:Efomula, zonke izithako zidinga ukuxutshwa ngokulinganayo ukuze kuqinisekiswe ukuthi i-HPMC ingadlala ngokugcwele indima yayo ekuhlanganiseni.
Izimo Zokugcina:I-Dry Powder Moersiation Porcelain Coatings kufanele igcinwe endaweni eyomile nepholile ukugwema izinga lokushisa eliphakeme kanye nomswakama othinta ikhwalithi ye-coating.
Ukusetshenziswa kwe-hydroxypropyll methylcellulose embozweni omile we-powder mbumbulur porcelain kungathuthukisa kakhulu ukusebenza kwezokwakha, ukunamathela kanye nokumelana kwamanzi okuqinile, okwenza ukuhlanganiswa okuqinile nokuqina. Ngokwakheka kwefomula enengqondo futhi usebenzise izindlela, izinzuzo ze-HPMC zingasetshenziswa ngokugcwele, ukusebenza okuphelele kokuhlanganiswa kwemali kungathuthukiswa, futhi izidingo ezahlukahlukene zokwakha zingahlangatshezwa. Kuhlelo lokusebenza langempela, inani le-HPMC elengezwa izidingo ezizolungiswa ngokuya ngesimo esithile ukuze kuqinisekiswe ukuthi ukuhlanganiswa kufinyelela umphumela oyifunayo.
Isikhathi sePosi: Feb-12-2025