Incazelo yokulinganisa

IukulinganisaImpahla ye-coating ichazwa njengekhono le-coating lokugeleza ngemva kokufaka isicelo, ngaleyo ndlela kukhulisa ukuqeda noma yikuphi ukungalingani kwendawo okubangelwa inqubo yesicelo. Ngokuqondile, ngemva kokusetshenziswa kokumboza, kunenqubo yokugeleza nokomisa, bese kancane kancane kwakhiwa ifilimu eyisicaba, ebushelelezi, nefanayo. Ukuthi i-coating ingafinyelela impahla eyisicaba futhi ebushelelezi ibizwa ngokuthi i-level.

Ukunyakaza kokunamathela okumanzi kungachazwa ngamamodeli amathathu:

① imodeli ye-engeli egelezayo yokusabalalisa ku-substrate;

② imodeli ye-sine wave yokugeleza ukusuka endaweni engalingani ukuya endaweni eyisicaba;

③ I-Benard vortex ekuqondeni mpo. Zihambisana nezigaba ezintathu eziyinhloko zokulinganisa ifilimu emanzi - ukusabalalisa, ukulinganisa kwasekuqaleni nasekupheleni kwesikhathi, lapho ukungezwani kwendawo, amandla okugunda, ukuguqulwa kwe-viscosity, i-solvent nezinye izici zidlala indima ebalulekile esigabeni ngasinye.

Ukusebenza kahle kwezinga

(1) Izimbobo zokushwabana
Kukhona izinto ezicindezelayo endaweni ephansi (imithombo yembobo eshwabene) efilimini enamathelayo, enomehluko wokudonsa phezulu nenaleti elizungezile. Lo mehluko ukhuthaza ukwakheka kwezimbobo ezinciphayo, okubangela uketshezi oluwuketshezi oluzungezile ukuba lugeleze lusuke kulo futhi lwenza ukucindezeleka.

(2) Ikhasi eliwolintshi
Ngemuva kokumisa, ingaphezulu le-coating libonisa ama-protrusions amaningi angama-semicircular, afana nama-ripples ekhasi lewolintshi. Lesi simo sibizwa nge-orange peel.

(3) Ukudangala
Ifilimu yokumboza emanzi iqhutshwa amandla adonsela phansi ukuze yakhe izimpawu zokugeleza, okubizwa ngokuthi i-sagging.

Izinto ezithinta izinga

(1) Umthelela wokudonselana kwendawo enamathelayo ekulengeni.
Ngemuva kokufakwa kwe-coating, kuzovela izindawo ezintsha zokusebenzelana: isixhumi esibonakalayo esiwuketshezi/esiqinile phakathi kokumboza ne-substrate kanye nesixhumi esibonakalayo se-liquid/gas phakathi kokumboza nomoya. Uma ukungezwani kobuso koketshezi/ukuxhumana okuqinile phakathi kokunamatheliswa kanye ne-substrate kuphakeme kunokudonsa okubalulekile kwendawo engaphansi kwe-substrate, ukunamathela ngeke kukwazi ukusabalala ku-substrate, kanye nokukhubazeka kokuleveli okunjengokuncipha, ukushwabana kwezimbotshana, kanye namehlo okudoba ngokwemvelo.

(2) Umphumela wokuncibilika ekulengeni.
Phakathi nenqubo yokumisa ifilimu kapende, ngezinye izikhathi ezinye izinhlayiya ezingancibiliki zikhiqizwa, ezibuye zenze i-gradient yokucindezeleka kwendawo futhi ziholele ekwakhekeni kwezimbobo zokuncipha. Ngaphezu kwalokho, ekubunjweni okuqukethe ama-surfactants, uma i-surfactant ingahambisani nesistimu, noma phakathi nenqubo yokomisa, njengoba i-solvent iyahwamuka, ukugxila kwayo kuyashintsha, okuholela ekushintsheni kokuncibilika, ukwakha amaconsi angahambisani, nokwenza umehluko wokungezwani kwendawo. Lokhu kungase kuholele ekwakhekeni kwezimbobo zokushwabana.

(3) Umthelela wokujiya kwefilimu emanzi kanye negradiyenti yokudonsa phezulu ekulengeni.
I-Benard vortex - Ukuhwamuka kwe-solvent phakathi nenqubo yokomisa yefilimu kapende kuzokhiqiza umehluko wokushisa, ukuminyana kanye nokungezwani kwendawo phakathi kwendawo kanye nangaphakathi kwefilimu kapende. Lo mehluko uzoholela enyakazweni enyakazayo ngaphakathi kwefilimu kapende, yakhe ebizwa ngokuthi i-Benard vortex. Izinkinga zefilimu kapende ezibangelwa i-Benard vortices azizona kuphela ikhasi lewolintshi. Ezinhlelweni eziqukethe umbala ongaphezu kwesisodwa, uma kunomehluko othile ekuhambeni kwezinhlayiya ze-pigment, i-Benard vortices ingase ibangele ukuntanta nokuqhakaza, futhi ukusetshenziswa kwendawo eqondile kuzophinde kubangele imigqa kasilika.

(4) Umthelela wobuchwepheshe bokwakha nendawo ekulevelini.
Ngesikhathi sokwakhiwa kanye nenqubo yokwenza ifilimu ye-coating, uma kukhona ukungcola kwangaphandle, kungase futhi kubangele ukukhubazeka kokulinganisa okufana nezimbobo zokuncipha kanye namehlo ezinhlanzi. Lezi zinto ezingcolisayo ngokuvamile zivela kuwoyela, uthuli, inkungu kapende, umhwamuko wamanzi, njll. ovela emoyeni, amathuluzi okwakha nama-substrates. Izakhiwo ze-coating ngokwayo (njenge-viscosity yokwakha, isikhathi sokumisa, njll.) nazo zizoba nomthelela omkhulu ekulinganisweni kokugcina kwefilimu yepende. I-viscosity ephezulu kakhulu yokwakha kanye nesikhathi esifushane sokumisa ngokuvamile sikhiqiza ukubukeka okungalungile.

I-Nanjing Reborn New Materials inikezaama-leveling agentskufaka phakathi i-Organo Silicone kanye ne-Non-silicon efana ne-BYK.