izindaba

1. Isimiso

Lapho i-resin esekelwe emanzini igcotshwe ebusweni be-substrate, ingxenye ye-ejenti yokumanzisa ingaphansi kwe-coating, ethintana nobuso obuzomanziswa, ingxenye ye-lipophilic ikhangiswa endaweni eqinile, futhi iqembu le-hydrophilic lidlulela ngaphandle emanzini.Ukuthintana phakathi kwamanzi ne-substrate kuba ukuxhumana phakathi kwamanzi kanye neqembu le-hydrophilic le-ejenti yokumanzisa, okwenza isakhiwo sesemishi ne-ejenti yokumanzisa njengesendlalelo esiphakathi.Yenza kube lula ukusabalalisa isigaba samanzi, ukuze ufeze inhloso yokumanzisa.Enye ingxenye ye-ejenti yokumanzisa esekelwe emanzini ikhona phezu koketshezi, iqembu layo le-hydrophilic lidlulela emanzini awuketshezi, futhi iqembu le-hydrophobic livezwa emoyeni ukuze lenze ungqimba lwe-monomolecular, okunciphisa ukungezwani okungaphezulu kwe-coating futhi ikhuthaza ukumanzisa okungcono kwe-coating.i-substrate, ukuze kuzuzwe inhloso yokumanzisa.

2. Okuhlangenwe nakho okuthile ekusebenziseni izinto zokumanzisa ezisekelwe emanzini

Emkhiqizweni wangempela, lapho kucatshangelwa ikhono lokumanzisa le-resin, akufanele kubhekwe nje kuphela ubukhulu bokuqina kwayo kwendawo emile, kodwa futhi nobukhulu bokungezwani okuguquguqukayo kwendawo kufanele kucatshangelwe, ngoba lapho kwenziwa ukumbozwa kwe-resin, ngaphansi kwesenzo sokucindezeleka, ngalesi sikhathi Lapho ukwehla kwe-dynamic surface tension, kuba ngcono ukumanzisa.Ngalesi sikhathi, i-ejenti yokumanzisa ngokushesha yenza ungqimba lwe-monomolecular ebusweni be-coating, okungukuthi, ukwakheka ngokushesha kwesendlalelo se-molecular oriented, kuvumelana kakhulu nokumanzisa.I-ejenti yokumanzisa equkethe i-fluorine inciphisa ngokuyinhloko ukungezwani kwendawo emile, futhi i-ejenti yokumanzisa esekelwe ku-silicone inganciphisa kahle kakhulu ukungezwani kwendawo eguqukayo.Ngakho-ke, ekusetshenzisweni okusebenzayo, kubaluleke kakhulu ukukhetha i-ejenti efanelekile yokumanzisa ngokusho kwesimo sangempela.kubalulekile

3. Iqhaza lama-disperants asekelwe emanzini

Umsebenzi wama-disperants asekelwe emanzini ukusebenzisa ama-agent okumanzisa nokuhlakaza ukunciphisa isikhathi namandla adingekayo ukuqedela inqubo yokusabalalisa, ukuzinzisa ukuhlakazeka kwe-pigment ehlakazekile, ukuguqula izakhiwo ezingaphezulu zezinhlayiya ze-pigment, futhi ulungise ukuhamba kwezinhlayiya ze-pigment.Kuboniswe ngokukhethekile kulezi zici ezilandelayo:

1. Thuthukisa isicwebezelisi futhi wandise umphumela wokulinganisa.I-gloss empeleni incike ikakhulukazi ekuhlakazekeni kokukhanya ebusweni be-coating (okungukuthi, izinga elithile lokucaba. Yiqiniso, kuyadingeka ukunquma ukuthi ingabe isicaba ngokwanele ngethuluzi lokuhlola, hhayi inombolo nokuma kuphela. yezinhlayiya eziyinhloko, kodwa futhi indlela yazo yokuhlanganisa), lapho usayizi wezinhlayiyana ungaphansi kwe-1/2 yokukhanya kwesigameko (leli nani aliqinisekile), lizovela njengokukhanya okuphikisiwe, futhi isicwebezelisi ngeke sande.Ngokufanayo, amandla okusibekela ancike ekuhlakazeni ukuze anikeze amandla okusibekela ayinhloko ngeke ande (ngaphandle kokuthi I-Carbon emnyama idonsa kakhulu ukukhanya, khohlwa ngama-pigments e-organic).Qaphela: Ukukhanya kwesigameko kubhekise kububanzi bokukhanya okubonakalayo futhi ukulevelisa akukuhle;kodwa qaphela ukunciphisa inani lezinhlayiya eziyinhloko, okunciphisa i-viscosity yesakhiwo, kodwa ukwanda kwendawo ethile kuzonciphisa inani lama-resin mahhala.Ukuthi kukhona i-balance point akukuhle.Kodwa ngokuvamile, ukulinganisa kwe-powder coatings akukuhle ngangokunokwenzeka.

2. Vimbela umbala ontantayo ukuthi ungaqhakazi.

3. Thuthukisa amandla okuthayela Qaphela ukuthi amandla okuthayela awekho phezulu ngangokunokwenzeka ohlelweni lwe-toning oluzenzakalelayo.

4. Yehlisa i-viscosity futhi ukhulise ukulayishwa kwe-pigment.

5. Ukunciphisa i-flocculation kufana nalokhu, kodwa uma i-particle incinyane, amandla aphezulu aphezulu, futhi

i-dispersant enamandla adsorption aphezulu iyadingeka, kodwa i-dipersant enamandla kakhulu e-adsorption ingase ibangele imiphumela emibi ekusebenzeni kwefilimu yokumboza.

6. Isizathu sokwandisa ukuzinza kwesitoreji sifana nalokhu okungenhla.Uma ukuzinza kwe-disperant kunganele, ukuzinza kwesitoreji kuzoba kubi kakhulu (impela, akuyona inkinga esithombeni sakho).

7. Khulisa ukuthuthukiswa kombala, ukwandisa ukugcwala kombala, ukwandisa ukukhanya (izingulube eziphilayo) noma amandla okufihla (izingulube ze-inorganic).