Tignoolajiyada daawaynta iftiinka waa wax-ku-oolnimada sare, ilaalinta deegaanka, tamarta-badbaadinta iyo tignoolajiyada korka alaabta tayada sare leh.Waxaa loo yaqaanaa tignoolajiyada cusub ee warshadaha cagaaran qarniga 21aad.Horumarinta sayniska iyo tignoolajiyada, adeegsiga tignoolajiyada daweynta iftiinka ayaa ka soo baxay sabuuraddii ugu horreysay ee daabacan iyo iska caabbinta iftiinka ilaa dahaarka iftiinka, khad iyo koollada.Goobta dalabka ayaa sii fidaysay oo samaysay warshad cusub.
Alaabooyinka daweynta UV ee ugu caansan waa dahaarka UV, khadadka UV iyo xabagta UV.Muuqaalkooda ugu weyn waa inay leeyihiin heer bogsiin degdeg ah, guud ahaan inta u dhaxaysa dhowr ilbiriqsi iyo tobanaan ilbiriqsi.Sida ugu dhakhsaha badan waxaa lagu daweyn karaa 0.05 ~ 0.1s.Waa qalajinta iyo daawaynta ugu dhaqsiyaha badan marka loo eego dahaaradaha kala duwan, khadadka iyo xabagta hadda.
Daaweynta UV waa daaweynta UV.UV waa soo gaabinta Ingiriisiga ee UV.Daawaynta waxaa loola jeedaa habka beddelka walxaha laga beddelayo molecules hooseeya loona beddelo polymers.Daawaynta UV guud ahaan waxa loola jeedaa xaaladaha daawaynta ama shuruudaha dahaarka (rinnjiyada), khadadka, xabagta (xabagta) ama dheryaha kale ee dheryaha ee u baahan in lagu daweeyo UV, taas oo ka duwan daawaynta kuleyliyaha, wakiilka isku xidhka (wakiilka daaweynta) daaweynta, dabiiciga ah. daawaynta iwm. [1].
Qaybaha aasaasiga ah ee alaabta daaweynta iftiinka waxaa ka mid ah oligomers, diluents firfircoon, photoinitiators, wax lagu daro iyo wixii la mid ah.Oligomer waa jidhka ugu muhiimsan ee alaabta daaweynta UV, waxqabadkeeduna wuxuu asal ahaan go'aamiyaa waxqabadka ugu muhiimsan ee alaabta la daaweeyay.Sidaa darteed, xulashada iyo naqshadeynta oligomer ayaa shaki la'aan ah xiriir muhiim ah oo ku saabsan samaynta alaabta daaweynta UV.
Waxa oligomers-yadani ay wadaagaan waa in ay dhamaantood leeyihiin "Resins double bond oo aan la daboolin ayaa lagu qiimeeyaa iyadoo loo eegayo heerka falcelinta ee polymerization radical free: acryloyloxy> Methacryloyloxy> vinyl> allyl.Sidaa darteed, oligomers-yada loo isticmaalo daaweynta iftiinka xagjirka ah ee bilaashka ah ayaa inta badan ah dhammaan noocyada kala duwan ee resins acrylic, sida epoxy acrylate, polyurethane acrylate, polyester acrylate, polyether acrylate, resin acrylate ama vinyl resin, iyo epoxy acrylate waa midka ugu badan ee la isticmaalo. xabagta acrylic iyo polyester acrylic resin.Saddexdan xabo ayaa si kooban hoos loogu soo bandhigay.
Epoxy acrylate waa tan ugu badan ee la isticmaalo oo loo isticmaalo daaweynta iftiinka oligomer.Waxa laga diyaariyey xabagta epoxy iyo (meth) acrylate.Epoxy acrylate waxa loo qaybin karaa bisphenol A epoxy acrylate, phenolic epoxy acrylate, epoxy acrylate oo la bedelay iyo acrylate epoxidated oo la raacayo nooca qaabdhismeedka.Bisphenol A epoxy acrylate waa tan ugu isticmaalka badan.Bisphenol A epoxy acrylate waa mid ka mid ah oligomers ee leh heerka ugu dhaqsaha badan ee daaweynta.Filimka la daaweeyay wuxuu leeyahay qallafsanaan sare, dhalaal sare, caabbinta kiimikaad ee heer sare ah, caabbinta kulaylka wanaagsan iyo sifooyinka korantada.Intaa waxaa dheer, bisphenol A oksijiin beddelka acrylate wuxuu leeyahay qaacido alaabta ceeriin oo fudud iyo qiimo jaban.Sidaa darteed, waxaa caadi ahaan loo isticmaalaa sida xabagta ugu weyn ee waraaqaha daweynta iftiinka, alwaax, balaastig ah iyo daahan biraha, iyo sidoo kale xabagta ugu weyn ee khad daweynta iftiinka iyo koollada daweynta iftiinka.
Polyurethane acrylate
Polyurethane acrylate (PUA) waa iftiin kale oo muhiim ah oo daaweynaya oligomer.Waxaa lagu farsameeyaa falcelinta laba-tallaabo ee polyisocyanate, diol silsilad dheer iyo hydroxyl acrylate.Sababtoo ah qaababka badan ee polyisocyanates iyo diols silsilad dheer, oligomers leh sifooyin go'an ayaa lagu soo koobay naqshadeynta unugyada.Sidaa darteed, waxay yihiin oligomer-yada leh noocyada ugu badan ee wax soo saarka hadda, waxaana si ballaaran loogu isticmaalaa daaha-daweynta iftiinka, khadadka iyo xabagta.
Polyester Acrylate
Polyester acrylate (PEA) sidoo kale waa oligomer caadi ah.Waxaa lagu diyaariyaa acrylate of polyester glycol miisaankeedu yar yahay.Polyester acrylate waxaa lagu gartaa qiimo jaban iyo viscosity hoose.Viscosity hooseeya awgeed, polyester acrylate waxaa loo isticmaali karaa labadaba oligomer iyo dareere firfircoon.Intaa waxaa dheer, polyester acrylates inta badan waxay leeyihiin ur yar, xanaaq yar, dabacsanaan wanaagsan iyo qoynta midabka, waxayna ku habboon yihiin rinjiyada midabka iyo khadadka.Si loo hagaajiyo heerka daaweynta sare, polyester acrylate multifunctional waa la diyaarin karaa;Amine modified polyester acrylate kaliya ma yarayn karto saamaynta xakamaynta polymerization oxygen iyo hagaajinta heerka daaweynta, laakiin sidoo kale waxay hagaajinaysaa adhesion, gloss iyo xidhashada caabbinta.
Kala-saareyaasha firfircoon waxay inta badan ku jiraan kooxo fal-celin ah, kuwaas oo milmi kara oo milmi kara oligomers, oo door muhiim ah ka ciyaara habka daaweynta iftiinka iyo sifooyinka filimada.Marka loo eego tirada kooxaha falceliska ah ee ku jira, dareerayaasha firfircoon ee monofunctional caadiga ah waxaa ka mid ah isodecyl acrylate, lauryl acrylate, hydroxyethyl methacrylate, glycidyl methacrylate, iwm;Dheecaannada firfircoon ee bifunctional waxaa ka mid ah taxane polyetylen glycol diacrylate, dipropylene glycol diacrylate, neopentyl glycol diacrylate, iwm;Dheecaannada firfircoon ee kala duwan sida trimethylolpropane triacrylate, iwm.
Bilawiyuhu waxa uu saamayn muhiim ah ku leeyahay heerka daawaynta alaabta UV.Badeecooyinka lagu daweeyo UV, qaddarka dheeriga ah ee sawir-qaade guud ahaan waa 3% ~ 5%.Intaa waxaa dheer, pigments iyo wax-buuxiyeyaasha ayaa sidoo kale saameyn muhiim ah ku leh sifooyinka ugu dambeeya ee alaabta la daaweeyay UV.
Waqtiga boostada: Abriil-20-2022