Iiarhente zokulinganisaEzisetyenziswa kwiingubo zihlala zahlulwe zibe zii-solvents ezixutyiweyo, i-acrylic acid, i-silicone, ii-fluorocarbon polymers kunye ne-cellulose acetate. Ngenxa yeempawu zayo zoxinzelelo oluphantsi lomphezulu, ii-leveling agents azinakunceda kuphela i-leveling ukuba ilingane, kodwa zinokubangela neziphumo ebezingalindelekanga. Ngexesha lokusetyenziswa, eyona nto iphambili ekufuneka iqwalaselwe ziziphumo ezimbi zee-leveling agents kwi-recoatability kunye ne-anti-cratering agents ze-leveling, kwaye ukuhambelana kwee-leveling agents ezikhethiweyo kufuneka kuvavanywe ngokusebenzisa iimvavanyo.

1. Iarhente yokulinganisa isinyibilikisi esixutyiweyo

Ngokusisiseko yenziwe ngezinyibilikisi ze-hydrocarbon ezinuka kamnandi ezinamaqondo aphezulu okubila, ii-ketones, ii-esters okanye izinyibilikisi ezibalaseleyo zamaqela ahlukeneyo asebenzayo, kunye nemixube yezinyibilikisi ezinamaqondo aphezulu okubila. Xa ulungiselela kwaye usebenzisa, kufuneka kunikwe ingqalelo kwizinga layo lokubila, ibhalansi yokubila kunye nokunyibilika, ukuze i-coating ibe nezinga eliqhelekileyo lokubila kunye nokunyibilika kwe-solvent ngexesha lenkqubo yokomisa. Ukuba izinga lokubila liphantsi kakhulu, liya kuhlala kwifilimu yepeyinti ixesha elide kwaye alinakukhululwa, nto leyo eya kuchaphazela ubulukhuni befilimu yepeyinti.

Olu hlobo lwe-arhente yokulinganisa lufanelekile kuphela ekuphuculeni iziphene zokulinganisa (ezifana nokushwabana, ukuba mhlophe, kunye nokuqaqamba okungekho ngqindilili) okubangelwa kukoma ngokukhawuleza kwe-solvent yokugquma kunye nokunyibilika okungekho ngqindilili kwezinto ezisisiseko. Umthamo ngokubanzi yi-2% ~ 7% yepeyinti iyonke. Iya kwandisa ixesha lokoma kwe-coating. Kwi-coating yomisa ubushushu begumbi (efana nepeyinti ye-nitro) enokugoba xa isetyenziswa kwi-facade, ayincedi nje kuphela ekulinganiseni, kodwa ikwanceda ekuphuculeni ukuqaqamba. Ngexesha lenkqubo yokomisa, inokuthintela amaqamza e-solvent kunye ne-pinholes ezibangelwa kukufuma ngokukhawuleza kwe-solvent. Ingakumbi xa isetyenziswa phantsi kobushushu obuphezulu kunye neemeko zemozulu ezinomswakama ophezulu, inokuthintela umphezulu wefilimu yepeyinti ukuba wome ngaphambi kwexesha, ibonelele nge-solvent volatilization curve efanayo, kwaye ithintele ukwenzeka kwenkungu emhlophe kwipeyinti ye-nitro. Olu hlobo lwe-arhente yokulinganisa lusetyenziswa ngokubanzi kunye nezinye ii-agent zokulinganisa.

2. Iiarhente zokulinganisa i-acrylic

Olu hlobo lwe-arhente yokulinganisa ubukhulu becala yi-copolymer yee-esters ze-acrylic. Iimpawu zayo zezi:

(1) I-alkyl ester ye-acrylic acid inika umsebenzi osisiseko womphezulu;

(2) Yayo−COOH,−OH, kwaye−I-NR inokunceda ukulungisa ukuhambelana kwesakhiwo se-alkyl ester;

(3) Ubunzima beemolekyuli obuhambelanayo bunxulumene ngokuthe ngqo nokusebenza kokusasaza kokugqibela. Ukuhambelana okubalulekileyo kunye noqwalaselo lwetyathanga le-polyacrylate ziimeko eziyimfuneko ukuze ibe yiarhente efanelekileyo yokulinganisa. Indlela yayo yokulinganisa enokwenzeka ibonakala kakhulu kwinqanaba lokugqibela;

(4) Ibonisa iipropati zokulwa nokukhupha amagwebu kunye nokukhupha igwebu kwiinkqubo ezininzi;

(5) Ukuba nje kukho inani elincinci lamaqela asebenzayo (afana ne--OH, -COOH) kwi-arhente yokulinganisa, impembelelo ekubuyiseleni i-coating ayibonakali, kodwa kusekho ithuba lokuchaphazela ukuphinda kufakelwe i-coating;

(6) Kukwakho nengxaki yokufanisa i-polarity kunye nokuhambelana, nto leyo ekwafuna ukhetho oluvavanyiweyo.

3. Iarhente yokulinganisa i-silicone

IiSilicone luhlobo lwepolymer ene-silicon-oxygen bond chain (Si-O-Si) njenge-skeleton kunye namaqela e-organic anamathele kwiiathom ze-silicon. Uninzi lwee-silicone compounds zine-side chain ezinamandla aphantsi omphezulu, ngoko ke ii-silicone molecules zinamandla aphantsi omphezulu kunye noxinzelelo lomphezulu oluphantsi kakhulu.

Eyona polysiloxane isongezo esetyenziswa kakhulu yi polydimethylsiloxane, ekwaziwa ngokuba yi methyl silicone oil. Eyona ndlela isetyenziswa ngayo njenge defoamer. Iimodeli ezinobunzima obuphantsi beemolekyuli zisebenza ngakumbi ekukhuthazeni ukulingana, kodwa ngenxa yeengxaki ezinzulu zokuhambelana, zihlala zisengozini yokushwabana okanye ukungakwazi ukuphinda zifake i-coat. Ke ngoko, i polydimethylsiloxane kufuneka iguqulwe ngaphambi kokuba isetyenziswe ngokukhuselekileyo nangokufanelekileyo kwiingubo.

Iindlela eziphambili zokuguqula zezi: i-polyether modified silicone, i-alkyl kunye nezinye i-side group modified silicone, i-polyester modified silicone, i-polyacrylate modified silicone, i-fluorine modified silicone. Zininzi iindlela zokuguqula i-polydimethylsiloxane, kodwa zonke zijolise ekuphuculeni ukuhambelana kwayo neengubo.

Olu hlobo lwe-arhente yokulinganisa ludla ngokuba neziphumo zokulinganisa kunye nezokususa i-foam. Ukuhambelana kwayo ne-coating kufuneka kumiselwe ngovavanyo ngaphambi kokusetyenziswa.

4. Amanqaku aphambili okusetyenziswa

Khetha uhlobo olufanelekileyo: Khetha i-arhente yokulinganisa efanelekileyo ngokweemfuno zohlobo kunye nokusebenza kwengubo. Xa ukhetha i-arhente yokulinganisa, ukwakheka kwayo kunye neempawu zayo kunye nokuhambelana kwayo nengubo ngokwayo kufuneka kuqwalaselwe; kwangaxeshanye, ii-arhente ezahlukeneyo zokulinganisa okanye ezinye izongezo zihlala zisetyenziswa ngokudibeneyo ukulungelelanisa imiba eyahlukeneyo.

Nika ingqalelo kwisixa esongeziweyo: ukongezwa okugqithisileyo kuya kubangela iingxaki ezifana nokushwabana nokuwa komphezulu wokwaleka, ngelixa ukongezwa okuncinci kakhulu akuyi kufezekisa isiphumo sokwaleka. Ngokwesiqhelo, isixa esongeziweyo kufuneka simiselwe ngokusekelwe kwiimfuno ze-viscosity kunye ne-leveling zekwaleka, landela imiyalelo yokusebenzisa i-reagent, kwaye udibanise iziphumo zovavanyo zokwenyani.

Indlela yokugquma: Ukusebenza kokugquma kwengubo kuyachaphazeleka yindlela yokugquma. Xa usebenzisa i-agent yokugquma, ungasebenzisa ukuxubha, ukugquma nge-roller okanye ukutshiza ukuze unike indima epheleleyo kwi-agent yokugquma.

Ukuxuba: Xa usebenzisa i-agent yokulinganisa, ipeyinti kufuneka ixutywe ngokupheleleyo ukuze i-agent yokulinganisa isasazeke ngokulinganayo kwipeyinti. Ixesha lokuxuba kufuneka limiselwe ngokweempawu ze-agent yokulinganisa, ngokubanzi kungabi ngaphezu kwemizuzu eli-10.

Izixhobo ezintsha zeNanjing Reborn zibonelela ngezinto ezahlukeneyoiiarhente zokulinganisakuquka ezo ze-Organo Silicone kunye nezo zingeyo-silicon zokugquma. Uthotho lwe-BYK oluhambelanayo.