Ama-ejenti wokulinganisaezisetshenziswa ezimbozelweni ngokuvamile zihlukaniswa zibe izincibilikisi ezixubile, acrylic acid, abicah, fluorocarbon polymers kanye cellulose acetate. Ngenxa yezimpawu zayo eziphansi zokungezwani komzimba, ama-leveling agents awakwazi nje ukusiza ukunamathela ezingeni, kodwa angabangela nemiphumela emibi. Ngesikhathi sokusetshenziswa, ukucatshangelwa okuyinhloko imiphumela emibi yama-ejenti okulinganisa ekukwazi ukuphinda kuhlanganiswe kanye nezakhiwo zokulwa ne-cratering ye-coating, futhi ukuhambisana kwama-ejenti okulinganisa akhethiwe kudinga ukuhlolwa ngokuhlolwa.

1. I-ejenti yokulinganisa i-solvent exubile

Ngokuyisisekelo yakhiwe ngezinyibilikisi ze-hydrocarbon ezinamaphuzu aphezulu abilayo, ama-ketone, ama-ester noma izinyibilikisi ezinhle kakhulu zamaqembu ahlukahlukene asebenzayo, kanye nezingxube ze-solvent zamaphuzu abilayo. Lapho ulungiselela futhi usebenzisa, kufanele kuqashelwe izinga layo lokuguquguquka, ibhalansi ye-volatilization kanye ne-solubility, ukuze ukugqoka kube nesilinganiso se-solvent volatility rate kanye ne-solubility phakathi nenqubo yokomisa. Uma izinga le-volatilization liphansi kakhulu, lizohlala efilimu yepende isikhathi eside futhi alikwazi ukukhululwa, okuzothinta ubulukhuni befilimu yepende.

Lolu hlobo lwe-ejenti yokulinganisa lufaneleka kuphela ekuthuthukiseni iziphambeko zokulinganisa (ezifana nokuncipha, ukwenza mhlophe, nokucwebezela okungekuhle) okubangelwa ukomiswa ngokushesha kwento encibilikayo enamathelayo kanye nokuncibilika okungekuhle kwezinto eziyisisekelo. Umthamo ngokuvamile u-2% ~ 7% wesamba sikapende. Kuzokwandisa isikhathi sokumisa se-coating. Okwezingubo zokomisa izinga lokushisa kwegumbi (njengopende we-nitro) othambekele ekuncipheni uma usetshenziswa ku-facade, akusizi nje kuphela ngokulinganisa, kodwa futhi kusiza ukuthuthukisa isicwebezelisi. Phakathi nenqubo yokomisa, kungase futhi kuvimbele amabhamuza e-solvent nama-pinholes okubangelwa ukuhwamuka okushesha kakhulu kwe-solvent. Ikakhulukazi uma isetshenziswa ngaphansi kwezimo zokushisa eziphakeme kanye nezimo zezulu ezinomswakama ophezulu, ingavimbela indawo yefilimu kapende ukuthi yome ngaphambi kwesikhathi, inikeze ijika elilinganayo le-solvent volatilization, futhi ivimbele ukuvela kwenkungu emhlophe kupende we-nitro. Lolu hlobo lwe-ejenti yokulinganisa ngokuvamile lusetshenziswa ngokubambisana namanye ama-ejenti okulinganisa.

2. I-Acrylic leveling agents

Lolu hlobo lwe-ejenti yokulinganisa ngokuvamile luyi-copolymer ye-acrylic esters. Izici zayo yilezi:

(1) I-alkyl ester ye-acrylic acid inikeza umsebenzi oyisisekelo ongaphezulu;

(2) Yakho−COOH,−O, futhi−I-NR ingasiza ukulungisa ukuhambisana kwesakhiwo se-alkyl ester;

(3) Isisindo samangqamuzana esihlobene sihlobene ngokuqondile nokusebenza kokugcina kokusabalalisa. Ukuhambisana okubalulekile kanye nokucushwa kweketango le-polyacrylate yizimo ezidingekayo ukuze ube i-ejenti yokulinganisa efanelekile. Indlela yayo yokulinganisa engenzeka ibonakala ikakhulukazi esigabeni sakamuva;

(4) Ikhombisa izinto ezilwa nokukhihliza amagwebu ezinhlelweni eziningi;

(5) Uma nje kunenani elincane lamaqembu asebenzayo (njengokuthi -OH, -COOH) ku-ejenti yokulinganisa, umthelela ekuhlanganiseni kabusha cishe awubonakali, kodwa kusengenzeka ukuthinta kabusha;

(6) Kuphinde kube nenkinga yokufanisa i-polarity nokuhambisana, okudinga nokukhethwa kokuhlolwa.

3. I-ejenti yokulinganisa i-Silicone

Ama-Silicone awuhlobo lwe-polymer ene-silicon-oxygen bond chain (Si-O-Si) njengamathambo namaqembu e-organic axhunywe kuma-athomu e-silicon. Izinhlanganisela eziningi ze-silicone zinamaketanga aseceleni anamandla aphansi, ngakho-ke ama-molecule e-silicone anamandla aphansi kakhulu futhi aphansi kakhulu.

Isengezo se-polysiloxane esisetshenziswa kakhulu yi-polydimethylsiloxane, eyaziwa nangokuthi uwoyela we-methyl silicone. Ukusetshenziswa kwayo okuyinhloko njenge-defoamer. Amamodeli esisindo samangqamuzana aphansi asebenza kahle kakhulu ekukhuthazeni izinga, kodwa ngenxa yezinkinga ezingathi sína zokuhambisana, ngokuvamile athambekele ekushwabaneni noma ekungakwazi ukuhlehla. Ngakho-ke, i-polydimethylsiloxane kufanele ishintshwe ngaphambi kokuthi isetshenziswe ngokuphepha nangempumelelo ekugqokeni.

Izindlela eziyinhloko zokuguqulwa yilezi: i-polyether modified silicone, i-alkyl nezinye i-silicone eguquliwe yeqembu, i-polyester modified silicone, i-polyacrylate modified silicone, i-fluorine modified silicone. Kunezindlela eziningi zokuguqula i-polydimethylsiloxane, kodwa zonke zihloselwe ukuthuthukisa ukuhambisana kwayo nezingubo.

Lolu hlobo lwe-ejenti yokulinganisa ngokuvamile lunakho kokubili ukulinganisa nokuqeda amagwebu. Ukuhambisana kwayo ne-coating kufanele kunqunywe ngokuhlolwa ngaphambi kokusetshenziswa.

4.Amaphuzu abalulekile okusetshenziswa

Khetha uhlobo olulungile: Khetha i-ejenti yokulinganisa efanele ngokusho kohlobo kanye nezidingo zokusebenza ze-coating. Uma ukhetha i-ejenti yokulinganisa, ukwakheka kwayo kanye nezakhiwo kanye nokuhambisana kwayo ne-coating ngokwayo kufanele kucatshangelwe; ngesikhathi esifanayo, ama-ejenti ahlukene wokulinganisa noma ezinye izithasiselo zivame ukusetshenziswa ngokuhlanganiswa ukulinganisa izindaba ezihlukahlukene.

Naka inani elingeziwe: ukwengeza ngokweqile kuzodala izinkinga ezinjengokuncipha nokuwohloka endaweni yokumboza, kuyilapho ukungeza okuncane kakhulu ngeke kuzuze umphumela wokulinganisa. Ngokuvamile, inani elingeziwe kufanele linqunywe ngokusekelwe ku-viscosity kanye nezidingo zokulinganisa ze-coating, landela imiyalelo yokusetshenziswa kwe-reagent, futhi uhlanganise imiphumela yokuhlola yangempela.

Indlela yokumboza: Ukusebenza kokulinganisa kwe-coating kuthintwa indlela yokumboza. Uma usebenzisa i-ejenti yokulinganisa, ungasebenzisa ukuxubha, ukumboza nge-roller noma ukufutha ukuze unikeze umdlalo ogcwele endimeni ye-ejenti yokulinganisa.

Ukugqugquzela: Uma usebenzisa i-ejenti yokulinganisa, upende kufanele ushukunyiswe ngokugcwele ukuze i-ejenti yokulinganisa ihlakazeke ngokulinganayo kupende. Isikhathi sokunyakazisa kufanele sinqunywe ngokuya ngezimpawu ze-ejenti yokukala, ngokuvamile kungabi ngaphezu kwemizuzu eyi-10.

I-Nanjing Reborn New Materials inikeza ezihlukahlukeneama-leveling agentskufaka phakathi i-Organo Silicone kanye ne-Non-silicon yokuhlanganisa. Ukufanisa uchungechunge lwe-BYK.