Ukufunwa kwemakethe okubanzi kanye nenzuzo ephezulu kukhuthaza ukuthuthukiswa okusheshayo kwembonini yempahla yasendlini encane, imigqa yokukhiqiza ibilokhu ikhona kuyo yonke indawo yokupheka irayisi, umpheki wokungeniswa, ipani likagesi lokuthosa, isomisi sezinwele neketela likagesi, izinto zikagesi ezincane zasendlini seziyisidingo semindeni yanamuhla.Iningi lezinto ezincane zasendlini zisebenza endaweni yokushisa ephezulu, ukuze kuvikelwe kangcono izingxenye zayo ezihlukahlukene zokusebenza, ukugqoka futhi kubeka phambili ukusebenza okuyisisekelo kokushisa okuphezulu nokumelana nokugqoka.Ngesikhathi esifanayo ukuhlobisa okungcono nokunye ukusebenza kungahlangabezana kangcono nesidingo semakethe.
Enye, i-silicone enamathela
I-Silicone coating ingenye yakuqala futhi esetshenziswa kabanzi ukumelana nokushisa okuphezulu kwezinto zikagesi ezincane zasendlini e-China.I-silicone enamathela ngokuyinhloko yakhiwe nge-silicone resin njengengxenye eyinhloko, i-silicone resin ibonisa isakhiwo senethiwekhi esiyinkimbinkimbi, izakhiwo zamakhemikhali ezinzile, ukumelana okuhle kwezinga lokushisa eliphezulu.Izinga lokushisa elisebenzayo lezinto eziningi ezincane zasendlini ngokuvamile lingaphansi kuka-300 ℃, futhi izinga lokushisa eliphakeme kakhulu lokumelana ne-silicone enamathela lingafinyelela ku-300 ℃.Ngokombono wokusebenza kokumelana nezinga lokushisa, ukunamathela kwe-silicone kuwufanele kakhulu izinga lokushisa eliphakeme lezinto ezisetshenziswayo zasendlini ezincane.
Ukuze kuhlangatshezwane nezidingo zezinga lokushisa elisebenza ekhaya elincane elincane elingaphezu kuka-300 ℃, abakhiqizi bakapende bokuguqulwa kwe-organic silicon coating, umgomo oyisisekelo wokushintsha ukwehlisa izithako ezingamelana nokushisa okuphezulu njengokuqukethwe kwe-hydroxyl, okukhushulwe nguSi - O - Okhiye be-Si kanye nengxenye yezingxenye ze-inorganic ezimelana nokushisa okuphezulu, kuhlanganiswe nobuchwepheshe besimanje bokucubungula izinto eziyinhlanganisela esezingeni eliphakeme, Ukumelana nezinga lokushisa okuphezulu kwe-silicone enamathela kuthuthukiswe kakhulu, kuze kufike ku-600 ℃.
Ukufakwa kwe-silicone akugcini nje kuphela ukumelana nokushisa okuphezulu, kodwa futhi kunokunamathela okuqinile, ubulukhuni bokugqoka okuphezulu, inqubo elula kanye nezindleko eziphansi.Lezi zinzuzo zenza ukunamathela kwe-silicone kukhanye emakethe yasendlini yasendlini encane futhi kuthandwe ngamabhizinisi amancane asendlini.Kodwa ukushiyeka kwe-silicone enamathela kuyabonakala, ikakhulukazi kulezi zici ezilandelayo:
(1) isenzakalo sokubuyela emuva.I-coating elungiselelwe i-silicone yokugqoka iqiniswa ekuhambeni kwe-molecular thermal ekushiseni okuphezulu, futhi isakhiwo sizothamba.Lapho uthintana nezinto ezicijile, i-silicone ehlanganiswe ebusweni bezinto ezincane zasendlini ijwayele ukuklwebheka kanye nokunye ukulimala kwento yokugqoka.
(2) Izinkinga zokuphepha.Kukhona ezinye izithako ezinobuthi embotsheni ye-silicone, okuzosakazeka kancane kancane kusuka ngaphakathi kuya phezulu ngokungena, ikakhulukazi ukugqoka ngokuqondile ngokuthintana nokudla, kungase kube nezingozi zokuphepha kokudla;
(3) Ukumelana nezinga lokushisa eliphezulu kakhulu.Ngokuthuthuka okwengeziwe kwezinga lokushisa lokusetshenziswa kwezinye izinto zikagesi zasendlini, izinga lokushisa elisebenzayo lezinto ezisetshenziswayo zasendlini ezincane lize lifinyelele ku-600 ℃, ukuthi ungaqhubeka kanjani nokuthuthukisa izinga lokushisa lokusebenzisa i-silicone enamathela sekuyinkinga ephuthumayo okufanele ixazululwe.Njengamanje, inani elincane labakhiqizi be-silicone abakhulu abanamandla e-r&d benza ucwaningo olufanele futhi benze inqubekelaphambili ethile, kodwa kusenendlela ende okufanele yenziwe ekusebenziseni okungokoqobo.
Okwesibili, i-fluorocarbon coating
I-Fluorocarbon enamathela, njengento entsha, ayizange isetshenziswe isikhathi eside ekhaya nakwamanye amazwe, kodwa ukumelana kwayo okuhle kakhulu kwezinga lokushisa eliphezulu, ukumelana nokugqwala okuqinile, ukuzihlanza, ukunamathela okuqinile kanye nokumelana nesimo sezulu esiphezulu kuye kwakhathazeka kakhulu.I-Fluorocarbon coating iyingxenye eyinhloko ye-fluorine resin, izakhiwo zayo zamakhemikhali zizinzile kakhulu, ukumelana nokushisa okuphezulu kakhulu.Imishini yasendlini encane eboshwe nge-fluorocarbon coating ingaqhubeka nokusetshenziswa endaweni engama-260 ℃ ngaphandle kokushintsha, futhi i-fluorocarbon enamathela ayincibiliki emafutheni, ngeke isabele ngokudla, ukuphepha okuhle.Izinzuzo zokumboza nge-fluorocarbon zisobala, kodwa ukungalungi nakho kuvelele kakhulu.Ukushiyeka kwayo kubonakala ngokuyinhloko ekuphikisaneni kwayo kokushisa, ubulukhuni kanye nokwakhiwa kwezici ezintathu.Ubulukhuni be-fluorocarbon enamathela ekushiseni okuvamile buyi-2-3h kuphela, okusho ukuthi, i-fluorocarbon enamathela ekushiseni okuvamile ayidingi ifosholo, ibhulashi lensimbi yensimbi, noma nje ngeminwe ingaklwejwa i-fluorocarbon enamathela, njenge-fluorocarbon enamathela. esetshenziswa izinsimbi kagesi ukuhlangabezana izinkinobho kanye nezinye izinto ezibukhali ngokuvamile avele imihuzuko umonakalo enamathela umkhuba.Izindwangu ze-Fluorocarbon zingasebenza ngokuzinza endaweni engu-260℃, futhi zivame ukuncibilika lapho izinga lokushisa liphezulu kunalokhu.Ubulukhuni obuphansi be-fluorocarbon coating bunquma ubunzima be-fluorocarbon coating ekwakheni kanye nezimo zobuchwepheshe.Indlela yokugcina ukunamathela kanye nokushelela kwe-fluorocarbon enamathela kunqubo yokubopha kubaluleke kakhulu.Isiqondiso sokuthuthukiswa kwesikhathi esizayo sekhwalithi ephezulu ye-fluorocarbon coating:
(1) Xazulula izinga lokushisa eliphezulu elisekelwe ku-solvent, ubulukhuni nezimo zokwakha ezinzima nezinye izinkinga;
(2) ukuvikela imvelo okuluhlaza okokunamathela emanzini okusekelwe ku-fluorocarbon;
(3) Inhlanganisela yama-nanomaterials kanye ne-fluorocarbon coatings ukuthuthukisa ukuminyana kokunamathela nezinye izici ezibanzi.
Okwesithathu, i-powder coating
Ukumbozwa kwempushana kuye kwaqashelwa kabanzi njengokuthi “Ukusebenza kahle, ukujula, i-Ecology kanye Nomnotho” ngenxa yezinzuzo zabo zokungabi bikho kwe-solvent ephilayo, akukho ukungcola, izinga eliphezulu lokusetshenziswa nokusetshenziswa kwamandla okuphansi.Izembatho zempushana zingahlukaniswa zibe i-thermoplastic powder coatings kanye ne-thermosetting powder coatings ngokusho kwezinto ezahlukene zokwakha ifilimu.Okuvame ukusetshenziswa umshini wasendlini omncane ukushisa okuqinile okuyimodeli yempushana, umgomo wawo ukusebenzisa inhlaka enesisindo esincane samangqamuzana kanye ne-ejenti elaphayo ukukhiqiza ukusabela okuxhumanisa okuphambanayo ukuze kwakheke i-reticulate macromolecule enamathela ekushiseni okuphezulu.Emkhakheni wezinto zikagesi ezincane zasendlini, i-polyester powder coating, i-acrylic powder coating, i-epoxy powder coating kanye ne-polyurethane powder coating kusetshenziswa kabanzi.Izembatho zempushana zithuthuke ngokushesha eminyakeni yamuva, ngezinhlobo eziningi kanye nokusebenza okungcono.Izindleko zokusebenzisa i-powder coating zisaphezulu kakhulu ezinsizeni ezincane zasendlini ezinezindleko eziphansi uma kuqhathaniswa.Kuthenjwa ukuthi abakhiqizi bezingubo zokugqoka bangathuthukisa izindleko eziphansi kanye nokusebenza okuphezulu kwe-powder coating efanelekile kumishini emincane yasendlini.
I-Ultraviolet light (UV) elaphayo yokwelapha nayo ivele emakethe njengamanje, umgomo wayo ukusebenzisa ukukhanya kwe-ultraviolet ukunxenxa i-photoinitiator ukwenza i-photosensitive resin unsaturated key group cross-linking reaction to form the structure of the coating.Nakuba inqubo yokukhiqiza i-UV-curable coating ilula, iyabiza futhi ukuzinza kokushisa okushisayo akufanelekile, ngakho-ke ayikwazi ukusetshenziswa kabanzi ekukhiqizeni izinto ezincane zasendlini.
Isikhathi sokuthumela: Mar-15-2022