Ama-ejenti okulinganisaIzinto ezisetshenziswa ekumbozweni ngokuvamile zihlukaniswa zibe yizinyibilikisi ezixubile, i-acrylic acid, i-silicone, ama-polymer e-fluorocarbon kanye ne-cellulose acetate. Ngenxa yezici zayo zokucindezeleka okuphansi kobuso, izinto zokulengisa azikwazi nje ukusiza ulwelwesi ukuthi lulingane, kodwa futhi zingadala imiphumela emibi. Ngesikhathi sokusetshenziswa, okucatshangelwa kakhulu imiphumela emibi yezinto zokulengisa ezakhiweni zolwelwesi ezikwaziyo ukuphinda zimbozwe kanye nezakhiwo zokulwa nokuqhekeka kwembozo, futhi ukuhambisana kwezinto zokulengisa ezikhethiwe kudinga ukuhlolwa ngokuhlolwa.

1. I-ejenti yokulinganisa i-solvent exubile

Ngokuyisisekelo yakhiwe yizinyibilikisi ze-hydrocarbon ezinuka amakhaza ezinama-high-boiling-point, ama-ketone, ama-ester noma izinyibilikisi ezinhle kakhulu zamaqembu ahlukahlukene asebenzayo, kanye nezingxube zezinyibilikisi ezinama-high-boiling-point solvent. Lapho ulungiselela futhi usebenzisa, kufanele kuqashelwe izinga layo lokuwohloka, ibhalansi yokuwohloka kanye nokuncibilika, ukuze ingubo ibe nezinga elijwayelekile lokuwohloka kanye nokuncibilika ngesikhathi senqubo yokomisa. Uma izinga lokuwohloka liphansi kakhulu, lizohlala efilimini yopende isikhathi eside futhi alikwazi ukukhishwa, okuzothinta ubulukhuni befilimu yopende.

Lolu hlobo lwe-ejenti yokulengisa lufanelekela kuphela ukuthuthukisa amaphutha okulengisa (njengokuncipha, ukuba mhlophe, kanye nokucwebezela okubi) okubangelwa ukoma okusheshayo kakhulu kwe-solvent yokumboza kanye nokuncibilika okubi kwezinto eziyisisekelo. Umthamo ngokuvamile u-2% ~ 7% wopende ophelele. Kuzokwandisa isikhathi sokomisa se-coating. Ngezingubo zokomisa izinga lokushisa legumbi (njengopende we-nitro) ezivame ukugoba uma zisetshenziswa ku-facade, azisizi nje kuphela ngokulengisa, kodwa futhi ziyasiza ekuthuthukiseni ukucwebezela. Ngesikhathi senqubo yokomisa, ingavimbela futhi amabhamuza okunyibilikisa kanye nezimbobo ezibangelwa ukuhwamuka okusheshayo kwe-solvent. Ikakhulukazi uma isetshenziswa ngaphansi kwezimo zezulu ezinokushisa okuphezulu kanye nomswakama ophezulu, ingavimbela ubuso befilimu yopende ukuthi bungomi ngaphambi kwesikhathi, inikeze ijika elifanayo lokuwohloka kwe-solvent, futhi ivimbele ukuvela kwenkungu emhlophe kupende we-nitro. Lolu hlobo lwe-ejenti yokulengisa ngokuvamile lusetshenziswa kanye nezinye i-ejenti zokulengisa.

2. Ama-ejenti okulinganisa i-Acrylic

Lolu hlobo lwe-ejenti yokulinganisa ikakhulukazi luyi-copolymer yama-ester e-acrylic. Izici zalo yilezi:

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

(2) Yayo−COOH,−OH, futhi−I-NR ingasiza ekulungiseni ukuhambisana kwesakhiwo se-alkyl ester;

(3) Isisindo sama-molecule esihlobene sihlobene ngqo nokusebenza kokusabalalisa kokugcina. Ukuhambisana okubalulekile kanye nokucushwa kweketanga le-polyacrylate kuyimibandela edingekayo ukuze ibe yi-ejenti yokulinganisa efanelekile. Indlela yayo yokulinganisa engenzeka ibonakala kakhulu esigabeni sakamuva;

(4) Ibonisa izakhiwo zokulwa nokugqwala kanye nokuhlanza amagwebu ezinhlelweni eziningi;

(5) Uma nje kunenani elincane lamaqembu asebenzayo (njenge--OH, -COOH) ku-ejenti yokulevelisha, umthelela ekuvuseleleni kabusha cishe awubonakali, kodwa kusekhona ithuba lokuthinta ukuvuselela;

(6) Kukhona nenkinga yokufanisa i-polarity kanye nokuhambisana, okudinga nokukhethwa kokuhlolwa.

3. I-ejenti yokulinganisa i-silicone

Ama-silicone awuhlobo lwe-polymer olune-silicon-oxygen bond chain (Si-O-Si) njengamathambo namaqembu e-organic anamathele kuma-athomu e-silicon. Iningi lama-silicone compounds linemiketanga eseceleni enamandla aphansi omhlaba, ngakho-ke ama-molecule e-silicone anamandla aphansi kakhulu omhlaba kanye nokucindezeleka okuphansi kakhulu komhlaba.

Isithako se-polysiloxane esisetshenziswa kakhulu yi-polydimethylsiloxane, eyaziwa nangokuthi uwoyela we-methyl silicone. Ukusetshenziswa kwayo okuyinhloko kuyindlela yokususa i-foamer. Amamodeli anesisindo esiphansi sama-molecule asebenza kahle kakhulu ekukhuthazeni ukuleveli, kodwa ngenxa yezinkinga ezinkulu zokuhambisana, avame ukuthambekela ekuncipheni noma ekungakwazini ukuphinda afake i-coat. Ngakho-ke, i-polydimethylsiloxane kumele ishintshwe ngaphambi kokuba isetshenziswe ngokuphephile nangokuphumelelayo ekufakeni i-coat.

Izindlela eziyinhloko zokuguqula yilezi: i-polyether modified silicone, i-alkyl kanye nenye i-side group modified silicone, 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 yokulengisa luvame ukuba nemiphumela yokulengisa kanye neyokususa iphunga. Ukuhambisana kwayo nesembozo kufanele kunqunywe ngokuhlolwa ngaphambi kokusetshenziswa.

4. Amaphuzu abalulekile okusetshenziswa

Khetha uhlobo olufanele: Khetha i-ejenti yokulengisa efanele ngokwezinhlobo nezidingo zokusebenza kwengubo. Lapho ukhetha i-ejenti yokulengisa, ukwakheka kwayo kanye nezakhiwo zayo kanye nokuhambisana kwayo nengubo ngokwayo kufanele kucatshangelwe; ngesikhathi esifanayo, ama-ejenti ahlukahlukene okulengisa noma ezinye izithasiselo zivame ukusetshenziswa ndawonye ukulinganisela izinkinga ezahlukahlukene.

Naka inani elingeziwe: ukwengeza ngokweqile kuzobangela izinkinga ezifana nokuncipha nokuwa ebusweni bokumboza, kuyilapho ukwengeza okuncane kakhulu kungeke kufeze umphumela wokulinganisa. Ngokuvamile, inani elingeziwe kufanele linqunywe ngokusekelwe ezidingweni ze-viscosity kanye ne-leveling ze-coating, landela imiyalelo yokusebenzisa i-reagent, bese uhlanganisa imiphumela yangempela yokuhlolwa.

Indlela yokumboza: Ukusebenza kokulevelisha kwengubo kuthinteka yindlela yokumboza. Uma usebenzisa i-ejenti yokulevelisha, ungasebenzisa ukuxubha, ukumboza nge-roller noma ukufutha ukuze unikeze indima ephelele ye-ejenti yokulevelisha.

Ukuxuba: Uma usebenzisa i-elevation agent, upende kufanele uxutshwe ngokuphelele ukuze i-elevation agent ihlakazeke ngokulinganayo kupende. Isikhathi sokuxuba kufanele sinqunywe ngokwezici ze-elevation agent, ngokuvamile kungabi ngaphezu kwemizuzu eyi-10.

Izinto Ezintsha Ezintsha zaseNanjing zinikeza izinto ezahlukahlukeneama-ejenti okulevelishakufaka phakathi eze-Organo Silicone kanye neze-Non-silicon zokumboza. Uchungechunge lwe-BYK oluhambisanayo.