Iiarhente zokulinganisaezisetyenziswa kwiingubo zokwahlula ngokubanzi zihlelwa ngokwezinyibilikisi ezixubeneyo, iasidi ye-acrylic, i-silicone, i-fluorocarbon polymers kunye ne-cellulose acetate. Ngenxa yeempawu zayo ezisezantsi zoxinzelelo, i-agent yokulinganisa ayinakunceda kuphela i-coating ukuya kwinqanaba, kodwa inokubangela nemiphumo emibi. Ngethuba lokusetyenziswa, ukuqwalaselwa okuphambili yimiphumo emibi ye-agent yokulinganisa kwi-recoatability kunye ne-anti-cratering properties ye-coating, kunye nokuhambelana kwee-agent zokulinganisa ezikhethiweyo kufuneka kuhlolwe ngokuvavanywa.

1. I-arhente yokulinganisa i-solvent edibeneyo

Ngokusisiseko iqulunqwe ngezinyibilikisi eziphezulu zokubilisa-ezinevumba elimnandi le-hydrocarbon, iiketoni, ii-esters okanye izinyibilikisi ezigqwesileyo zamaqela ahlukeneyo asebenzayo, kunye nemixube ye-solvent ephezulu yokubilisa. Xa ulungiselela kwaye usebenzisa, ingqalelo kufuneka ihlawulwe kwinqanaba layo lokuguquguquka, ibhalansi yokuguquguquka kunye ne-solubility, ukwenzela ukuba i-coating ine-avareji ye-solvent volatility rate kunye ne-solubility ngexesha lokumisa. Ukuba izinga le-volatilization liphantsi kakhulu, liya kuhlala kwifilimu yepeyinti ixesha elide kwaye alikwazi ukukhutshwa, okuya kuchaphazela ubunzima befilimu yepeyinti.

Olu hlobo lwe-ejenti yokulinganisa lufanelekile kuphela ekuphuculeni iziphene zokulinganisa (ezifana nokunciphisa, umhlophe, kunye ne-gloss ephosakeleyo) okubangelwa ukomisa ngokukhawuleza kwe-solvent yokugubungela kunye nokunyibilika kakubi kwezinto ezisisiseko. Idosi ngokubanzi yi-2% ~ 7% yepeyinti iyonke. Kuya kwandisa ixesha lokumisa lengubo. Kwiingubo zokumisa ukushisa kwegumbi (ezifana nepeyinti ye-nitro) ejongene nokunciphisa xa ifakwe kwi-facade, ayincedi kuphela ngokusemgangathweni, kodwa inceda ekuphuculeni i-gloss. Ngexesha lenkqubo yokomisa, inokuthintela amaqamza okunyibilikisa kunye neepinhole ezibangelwa kukuphuma komphunga okukhawulezayo kwesinyibilikisi. Ngokukodwa xa isetyenziswe phantsi kobushushu obuphezulu kunye neemeko zemozulu zokufuma okuphezulu, inokuthintela umphezulu wefilimu yepeyinti ukuba yome ngaphambi kwexesha, inike i-curve ye-solvent volatilization efanayo, kwaye ithintele ukwenzeka kwenkungu emhlophe kwipeyinti ye-nitro. Olu hlobo lwe-ejenti yokulinganisa lusetyenziswa ngokubanzi kunye nezinye ii-agent zokulinganisa.

2. Ii-Acrylic leveling agents

Olu hlobo lwe-ejenti yokulinganisa ubukhulu becala i-copolymer ye-acrylic esters. Iimpawu zayo zezi:

(1) I-alkyl ester ye-acrylic acid ibonelela ngomsebenzi osisiseko osisiseko;

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

(3) Ubunzima bemolekyuli obunxulumene ngokuthe ngqo nokusebenza kokugqibela kokusasaza. Ukuhambelana okubalulekileyo kunye nokucwangciswa kwekhonkco le-polyacrylate ziimeko eziyimfuneko ukuze ube ngummeli ofanelekileyo wokulinganisa. Indlela yokulinganisa enokwenzeka ngayo ibonakaliswa ikakhulu kwinqanaba lamva;

(4) Ibonisa iipropathi ezichasayo kunye nokukhupha amagwebu kwiinkqubo ezininzi;

(5) Ngethuba nje kukho inani elincinci lamaqela asebenzayo (afana ne-OH, -COOH) kwi-arhente yokulinganisa, impembelelo yokubuyisela i-recoating iphantse ingabonakali, kodwa kusekho ithuba lokuchaphazela ukubuyisela kwakhona;

(6) Kwakhona kukho ingxaki yokudibanisa i-polarity kunye nokuhambelana, nayo efuna ukhetho lokulinga.

3. I-arhente yokulinganisa i-Silicone

I-Silicones luhlobo lwepolymer kunye ne-silicon-oxygen bond chain (Si-O-Si) njenge-skeleton kunye namaqela e-organic afakwe kwi-athomu ye-silicon. Uninzi lweekhompawundi ze-silicone zinamatyathanga asemacaleni anamandla asezantsi, ngoko ke iimolekyuli ze-silicone zinamandla aphantsi kakhulu kunye noxinzelelo olusezantsi kakhulu.

Eyona nto isetyenziswa ngokuqhelekileyo i-polysiloxane additive is polydimethylsiloxane, eyaziwa ngokuba yi-methyl silicone oil. Ukusetyenziswa kwayo okuphambili kufana ne-defoamer. Iimodeli ezinobunzima obuphantsi bemolekyuli zisebenza ngakumbi ekukhuthazeni ukulinganisa, kodwa ngenxa yemibandela enzulu yokuhambelana, zihlala zithandeka ekunciphiseni okanye zingakwazi ukuphinda zibuyele. Ngoko ke, i-polydimethylsiloxane kufuneka iguqulwe ngaphambi kokuba isetyenziswe ngokukhuselekileyo nangempumelelo kwiingubo.

Iindlela eziphambili zokuguqulwa zezi: i-polyether eguqulelwe i-silicone, i-alkyl kunye nelinye iqela le-silicone eguqulwayo, i-polyester modified silicone, i-polyacrylate modified silicone, i-silicone eguquliweyo ye-fluorine. Kukho iindlela ezininzi zokuguqulwa kwe-polydimethylsiloxane, kodwa zonke zijolise ekuphuculeni ukuhambelana kwayo kunye neengubo.

Olu hlobo lwe-ejenti yokulinganisa ngokuqhelekileyo luba nemiphumo yokulinganisa kunye ne-defoaming. Ukuhambelana kwayo kunye nokwaleka kufuneka kugqitywe ngeemvavanyo ngaphambi kokusetyenziswa.

4.Amanqaku aphambili okusetyenziswa

Khetha uhlobo olufanelekileyo: Khetha i-arhente yokulinganisa ngokufanelekileyo ngokohlobo kunye neemfuno ezisebenzayo zokugquma. Xa ukhetha i-ejenti yokulinganisa, ukubunjwa kwayo kunye neempawu kunye nokuhambelana kwayo kunye neengubo ngokwayo kufuneka ziqwalaselwe; kwangaxeshanye, iiarhente ezahlukeneyo zokulinganisa okanye ezinye izongezo zihlala zisetyenziswa ngokudibeneyo ukulungelelanisa imiba eyahlukeneyo.

Nika ingqalelo kwisixa esongeziweyo: ukongezwa okugqithisileyo kuya kubangela iingxaki ezinjengokuncipha kunye nokuncipha kwindawo yokwambathisa, ngelixa ukongezwa okuncinci kakhulu akuyi kufezekisa umphumo wokulinganisa. Ngokuqhelekileyo, imali eyongeziweyo kufuneka igqitywe ngokusekelwe kwi-viscosity kunye neemfuno zokulinganisa kwengubo, landela imiyalelo yokusetyenziswa kwe-reagent, kwaye udibanise iziphumo zovavanyo zangempela.

Indlela yokugqoka: Umgangatho wokusebenza kwengubo uchaphazelekayo yindlela yokugqoka. Xa usebenzisa i-ejenti yokulinganisa, ungasebenzisa i-brush, i-roller coating okanye ukutshiza ukunika umdlalo ogcweleyo kwindima ye-agent yokulinganisa.

Ukuvuselela: Xa usebenzisa i-agent yokulinganisa, ipeyinti kufuneka ixutywe ngokupheleleyo ukwenzela ukuba i-agent yokulinganisa ihlakazeke ngokulinganayo kwipeyinti. Ixesha lokuvuselela kufuneka limiselwe ngokweempawu ze-ejenti yokulinganisa, ngokuqhelekileyo kungabi ngaphezu kwemizuzu eyi-10.

Nanjing Reborn New Materials inikeza ezahlukeneyoii-arhente zokulinganisakubandakanywa ne-Organo Silicone kunye ne-Non-silicon yokugquma. Ukutshatisa uthotho lwe-BYK.