Iarhente yomgangatho
ipropati yeekhemikhali
Ngokwesakhiwo sekhemikhali esahlukileyo, olu hlobo lwearhente yokulinganisa luneendidi ezintathu eziphambili: i-acrylic acid, i-organic silicon kunye ne-fluorocarbon.I-ejenti yokulinganisa i-agent esetyenziswa ngokuqhelekileyo i-axiliary coating agent, enokwenza i-coating ifake ifilimu egudileyo, egudileyo kunye nefanayo kwinkqubo yokomisa.Inokunciphisa ngokufanelekileyo ukuxinezeleka komphezulu wolwelo lokutyabeka, iphucule umgangatho wayo kunye nokufana kodidi lwezinto.Inokuphucula ukunyanzeliswa kwesisombululo sokugqiba, ukunciphisa amathuba okuba namabala kunye nokumakishwa xa uxubha, ukwandisa ukugubungela, kwaye wenze ifilimu ifane nendalo.Ikakhulu i-surfactants, izinyibilikisi eziphilayo njalo njalo.Kukho iintlobo ezininzi ze-ejenti yokulinganisa, kwaye iintlobo ze-ejenti yokulinganisa esetyenziswa kwiingubo ezahlukeneyo azifani.Izinyibilikisi eziphezulu zokubilisa okanye i-butyl cellulose zingasetyenziswa kwi-solvent-based finishes.Emanzini-esekelwe kwi-agent yokugqiba kunye ne-surfactants okanye i-polyacrylic acid, i-carboxymethyl cellulose
Intshayelelo yemveliso kunye neempawu
Ii-arhente zokulinganisa zahlulwe ngokubanzi zibe ziindidi ezimbini.Enye ngokulungelelanisa i-viscosity yefilimu kunye nexesha lokulinganisa ukusebenza, olu hlobo lwe-arhente yokulinganisa ubukhulu becala yinto ephezulu yokubilisa i-solvents okanye imixube, njenge-isoporone, i-diacetone alcohol, i-Solvesso150;Enye kukulungisa iipropathi zomphezulu wefilimu ukuba zisebenze, abantu ngokubanzi bathi iarhente yokulinganisa ibhekisa ikakhulu kolu hlobo lwearhente yomgangatho.Olu HLOBO LWE-AGENSI YOKUQHUBEKA ifudukela kumphezulu wefilimu ngokuhambelana okulinganiselweyo, ichaphazela iipropathi zomphezulu zefilim ezinje nge-INTERFAcial tension, kwaye yenza ifilimu ifumane umgangatho olungileyo.
sebenzisa
Umsebenzi oyintloko wokugquma ngumhlobiso kunye nokukhuselwa, ukuba kukho ukuhamba kunye neziphene zokulinganisa, azichaphazeli nje ukubonakala, kodwa zonakalisa umsebenzi wokukhusela.Njengokwakheka kwe-shrinkage ebangelwa ubuninzi befilimu akwanelanga, ukubunjwa kweepinhole kuya kukhokelela ekunqanyulweni kwefilimu, oku kuya kunciphisa ukukhuselwa kwefilimu.Kwinkqubo yokwakhiwa kwengubo kunye nokwakheka kwefilimu, kuya kubakho utshintsho oluthile lomzimba kunye neekhemikhali, olu tshintsho kunye nohlobo lwengubo ngokwayo, luya kuchaphazela kakhulu ukuhamba kunye nomgangatho wokuhamba.
Emva kokuba i-coating isetyenzisiwe, i-interfaces entsha iya kuvela, ngokubanzi i-liquid / interface eqinile phakathi kwengubo kunye ne-substrate kunye ne-interface ye-liquid / igesi phakathi kwengubo kunye nomoya.Ukuba ukunyanzeliswa koMphakathi wolwelo/oluqilima phakathi kokugquma kunye ne-substrate kuphezulu kunoxinzelelo olubalulekileyo lomphezulu we-substrate, i-coating ayinakukwazi ukusasazeka kwi-substrate, eya kuvelisa ngokwendalo iziphene zokulinganisa ezifana ne-fisheye kunye nokushwabana. imingxuma.
I-EVAPORATION OF SOLVENT NGEXESHA LOKUSOMISA kwefilimu kuya kukhokelela kubushushu, ukuxinana kunye nokwahluka koxinzelelo lomphezulu phakathi komphezulu kunye nengaphakathi lefilimu.Lo mahluko ukhokelela kwintshukumo ephazamisayo ngaphakathi kwefilimu, eyenza into ebizwa ngokuba yi-Benard vortex.I-Benard vortex ikhokelela kwi-peel ye-orange;Kwiinkqubo ezine-pigment engaphezulu kwesinye, ukuba kukho umahluko othile ekuhambeni kwe-pigment particles, i-Benard vortex nayo inokukhokelela kumbala odadayo kunye neenwele, kwaye ukwakhiwa ngokuthe nkqo kuya kukhokelela kwimigca yesilika.
INKQUBO YOKUSUMA KWEFILIMU YEPEYINTI NGAMAXESHA IVELA EZINYE iincinci ezinganyibilikiyo ze-COLLOIDAL, Ukuveliswa kweengqungquthela ze-COLLOIDAL ezingenayo i-INSOLUBLE COLLOIDAL kuya kukhokelela ekwakhiweni kwe-gradient ye-surface tension gradient, ehlala ikhokelela ekuveliseni imingxuma ye-shrinkage kwifilimu yepeyinti.UMZEKELO, KWINKQUBO YOKUHLANGANISA OKUXHUMENEYO, APHO Uqulunqo LUFUTHE NGAPHEZU KWE-RESIN enye, I-resin e-soluble encinci inokwenza amasuntswana e-colloidal anganyibilikiyo njengoko i-solvent iguquka ngexesha lokumisa ifilimu yepeyinti.Ukongezelela, ekuqulunqweni okuqukethe i-surfactant, ukuba i-surfactant ayihambelani nenkqubo, okanye kwinkqubo yokumisa kunye ne-volatilization ye-solvent, utshintsho lwalo loxinzelelo lukhokelela ekutshintsheni ukunyibilika, ukubunjwa kwamaconsi angahambelaniyo, kuya kwenza umphezulu. uxinezeleko.Oku kunokukhokelela ekwakhekeni kwemingxunya eshwabeneyo.
Kwinkqubo yokwakhiwa kweengubo kunye nokwakhiwa kwefilimu, ukuba kukho ukungcola kwangaphandle, kunokukhokelela kwi-shrinkage hole, i-fisheye kunye nezinye iziphene zokulinganisa.Ezi zingcolisi zihlala zivela emoyeni, izixhobo zokwakha kunye neoli ye-substrate, uthuli, inkungu yepeyinti, umphunga wamanzi, njl.
Iimpawu zepeyinti ngokwazo, ezifana ne-viscosity yokwakha, ixesha lokumisa, njl., Kuya kuba nefuthe elibalulekileyo kwinqanaba lokugqibela lefilimu yepeyinti.I-viscosity ephezulu kakhulu yokwakha kunye nexesha elifutshane lokumisa lidla ngokuvelisa umgangatho ophantsi.
Ngoko ke, kuyimfuneko ukongeza i-agent yokulinganisa, ngokugquma kwinkqubo yokwakhiwa kunye nokwakhiwa kwefilimu yolunye utshintsho kunye neempawu zokugubungela ukulungelelanisa, ukunceda ipeyinti ifumane umgangatho omhle.
iphakheji kunye nezithuthi
B. Le mveliso ingasetyenziswa, 25KG, 200KG, 1000KG imibhobho.
C. Gcina uvalelwe kwindawo epholileyo, eyomileyo nengena umoya ngaphakathi.Imigqomo kufuneka ivalwe ngokuqinileyo emva kokusetyenziswa ngakunye phambi kokusetyenziswa.
D. Le mveliso kufuneka ivalwe kakuhle ngexesha lokuthutha ukukhusela umswakama, i-alkali enamandla kunye ne-asidi, imvula kunye nezinye izinto ezingcolileyo ekuxubeni.
