1. Hyperbranched dongosolo
Monga mtundu watsopano wa polima, hyperbranched polima ali ndi ozungulira dongosolo, ambiri yogwira mapeto magulu ndipo palibe mapiringidzo pakati maselo unyolo.Ma polima a Hyperbranched ali ndi maubwino osungunuka mosavuta, malo osungunuka otsika, ma viscosity otsika komanso kuchitapo kanthu kwakukulu.Chifukwa chake, magulu a acryloyl ndi magulu a hydrophilic amatha kuyambitsidwa kuti apange ma oligomers opangidwa ndi madzi, omwe amatsegula njira yatsopano yopangira utomoni wa UV Waterborne.
Poliyesitala yochizika ya UV (whpua) idakonzedwa ndi zomwe Hyperbranched Polyester yolemera m'magulu a hydroxyl okhala ndi succinic anhydride ndi ipdi-hea prepolymer, ndipo pamapeto pake idasinthidwa ndi organic amine kupanga mchere.Zotsatira zikuwonetsa kuti kuwala kwa utomoni kumachiritsa mwachangu ndipo mawonekedwe ake ndi abwino.Ndi kuwonjezeka kwa gawo lolimba, kutentha kwa galasi la utomoni kumawonjezeka, kuuma ndi kulimba kwamphamvu kumawonjezeka, koma kutalika kwa nthawi yopuma kumachepa.Ma polyesters a Hyperbranched adakonzedwa kuchokera ku polyanhydrides ndi ma epoxides monofunctional.Glycidyl methacrylate idayambitsidwa kuti ichitenso ndi magulu a hydroxyl ndi carboxyl a ma polima a hyperbranched.Potsirizira pake, triethylamine anawonjezeredwa kuti achepetse ndi kupanga mchere kuti apeze ma polyesters ochiritsira a UV omwe amapangidwa ndi madzi.Zotsatira zinawonetsa kuti gulu la carboxyl lomwe lili kumapeto kwa utomoni wopangidwa ndi madzi opangidwa ndi hyperbranched, ndizomwe zimasungunuka bwino m'madzi;Kuchulukitsa kwa utomoni kumawonjezeka ndi kuwonjezeka kwa ma terminal awiri.
2 organic-inorganic hybrid system
Kuwala kwamadzi kwa UV kuchiritsa organic / inorganic hybrid system ndi gawo lothandiza la Waterborne UV resin ndi zida za inorganic.Ubwino wa zinthu zakuthupi monga kukana kuvala kwambiri komanso kukana kwanyengo kumalowetsedwa mu utomoni kuti apititse patsogolo zinthu zonse za filimu yochiritsidwa.Poyambitsa tinthu tating'onoting'ono monga nano-SiO2 kapena montmorillonite mu machiritso a UV kudzera munjira yobalalika mwachindunji, njira ya sol-gel kapena njira yolumikizirana, njira yochiritsira ya UV organic / inorganic hybrid system ikhoza kukonzedwa.Kuphatikiza apo, organosilicon monoma imatha kulowetsedwa mu unyolo wama cell amadzimadzi a UV oligomer.
Organo / inorganic hybrid lotion (Si PUA) idakonzedwa ndikuyambitsa magulu a polysiloxane mu gawo lofewa la polyurethane lomwe lili ndi ma terminal hydroxybutyl polydimethylsiloxane (PDMS) ndikuchepetsa ndi ma acrylic monomers.Pambuyo kuchiritsa, filimu ya utoto imakhala ndi zinthu zabwino zakuthupi, ngodya yolumikizana kwambiri komanso kukana madzi.Hyperbranched hybrid polyurethane ndi kuwala kochiritsa hyperbranched polyurethane adakonzedwa kuchokera ku polyhydroxy hyperbranched polyurethane, succinic anhydride, silane coupling agent KH560, glycidyl methacrylate (GMA) ndi hydroxyethyl methacrylate.Kenako, Si02 / Ti02 organic-inorganic hybrid sol ya kuwala kochiritsa hyperbranched polyurethane idakonzedwa ndikusakaniza ndi hydrolyzing ndi tetraethyl orthosilicate ndi n-butyl titanate mosiyanasiyana.Zotsatirazi zikuwonetsa kuti pakuwonjezeka kwa zinthu zosawerengeka, kuuma kwa pendulum kwa zokutira zosakanizidwa kumawonjezeka ndipo kuuma kwapamwamba kumawonjezeka.Ubwino wa pamwamba wa zokutira wosakanizidwa wa SiO2 ndi wabwinopo kuposa wa Ti02 wokutira wosakanizidwa.
3 wapawiri machiritso dongosolo
Pofuna kuthetsa zofooka za machiritso a mbali zitatu za Waterborne UV resin ndi kuchiritsa kwa zokutira wandiweyani ndi dongosolo lamitundu, ndikusintha mawonekedwe a filimuyi, ofufuza adapanga njira yochiritsa yapawiri yophatikiza kuchiritsa kwa kuwala ndi machitidwe ena ochiritsa.Pakadali pano, kuchiritsa kopepuka, kuchiritsa kwamafuta, kuchiritsa kopepuka / kuchiritsa kwa redox, kuchiritsa kwaulele kwaulere / kuchiritsa kwa cationic komanso kuchiritsa / kunyowa ndi njira zochiritsira zapawiri, ndipo machitidwe ena agwiritsidwa ntchito.Mwachitsanzo, zomatira zoteteza zamagetsi za UV ndi njira yochiritsira yapawiri yochiritsa / redox kapena kuchiritsa / kunyowa.
Monomer ethyl acetoacetate methacrylate (amme) yogwira ntchito idalowetsedwa mu polyacrylic acid lotion, ndipo gulu lochiritsa lowala lidayambitsidwa kudzera mukuchita kwa Michael pa kutentha kochepa kuti apange kutentha kuchiritsa / UV kuchiritsa polyacrylate yamadzi.Kuwuma pa kutentha kosalekeza kwa 60 ° C, 2 x 5 Pansi pa 6 kW kuwala kwa nyali ya mercury, kuuma kwa utomoni pambuyo pa kupanga filimu ndi 3h, kukana mowa ndi nthawi 158, ndipo kukana kwa alkali ndi 24. maola.
4 epoxy acrylate / polyurethane acrylate composite system
Kupaka kwa epoxy acrylate kuli ndi ubwino wa kuuma kwakukulu, kumamatira kwabwino, gloss yapamwamba komanso kukana mankhwala abwino, koma kumakhala kosavuta kusinthasintha komanso kuphulika.Madzi a polyurethane acrylate ali ndi mawonekedwe a kukana kwabwino komanso kusinthasintha, koma kukana kwanyengo.Pogwiritsa ntchito kusintha kwa mankhwala, kusakanikirana kwakuthupi kapena njira zosakanizidwa kuti muphatikize bwino ma resin awiriwa kumatha kupititsa patsogolo magwiridwe antchito a utomoni umodzi ndikusewera kwathunthu pazabwino zake, kuti apange njira yochiritsira ya UV yogwira ntchito kwambiri yokhala ndi zabwino zonse ziwiri.
5 macromolecular kapena polymerizable photoinitiator
Ma photoinitiators ambiri ndi mamolekyu ang'onoang'ono a aryl alkyl ketone, omwe sangathe kuwola kwathunthu pambuyo pochiritsa kuwala.Mamolekyu ang'onoang'ono otsalira kapena zinthu za photolysis zidzasamukira pamwamba pa zokutira, kuchititsa chikasu kapena fungo, zomwe zidzakhudza ntchito ndi kugwiritsa ntchito filimu yochiritsidwa.Poyambitsa ma photoinitiators, magulu a acryloyl ndi magulu a hydrophilic kukhala ma polima opangidwa ndi hyperbranched, ofufuza adapanga ma macromolecular polymerizable photoinitiators amadzi kuti athe kuthana ndi kuipa kwa ma photoinitiators ang'onoang'ono a maselo.
Nthawi yotumiza: May-09-2022