Tiknoolajiyada daaweynta UV waa nooc ka mid ah waxtarka sare leh, ilaalinta deegaanka, tamarta-badbaadinta iyo tignoolajiyada dusha walxaha tayada sare leh.Waxaa loo yaqaanaa tignoolajiyada cusub ee warshadaha cagaaran qarniga 21aad.Horumarinta sayniska iyo tignoolajiyada, adeegsiga tignoolajiyada daaweynta UV waxay ka soo baxday looxyadii ugu horreeyay ee daabacan iyo iska caabbinta UV ilaa daaha dahaarka UV, khadyada iyo koollada.Goobta dalabka ayaa sii fidaysay, samaynaysay warshad cusub.
Badeecadaha daaweeya UV ayaa inta badan loo qaybiyaa dahaarka UV, khadadka UV iyo xabagta UV.Muuqaalkooda ugu weyn waa in ay leeyihiin heer bogsiin degdeg ah, guud ahaan inta u dhaxaysa dhowr ilbiriqsi iyo tobanaan ilbiriqsi, iyo sida ugu dhaqsaha badan waxaa lagu daweyn karaa 0.05 ~ 0.1s gudahood.Waa qalajinta iyo daawaynta ugu dhaqsiyaha badan marka loo eego dahaaradaha kala duwan, khadadka iyo xabagta hadda.
Daawaynta UV macnaheedu waa daawaynta UV.UV waa soo gaabinta Ingiriisiga ee UV.Daawaynta waxaa loola jeedaa habka ay walaxyadu ka beddelaan molecules hooseeya una beddelaan polymers.Daawaynta UV guud ahaan waxa loola jeedaa xaaladaha daawaynta ama shuruudaha dahaarka (rinnjiyada), khadadka, xabagta (xabagta) ama dheryaha kale ee dheryaha u baahan daawaynta UV, kuwaas oo ka duwan daawaynta kuleyliyaha, ku daawaynta xabagyada (wakiilada daaweynta), daaweynta dabiiciga ah, iwm. [1]
Qaybaha aasaasiga ah ee alaabta daaweynta UV waxaa ka mid ah oligomers, diluents firfircoon, photoinitiators, daroogo 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-ku ay wadaagaan waa in dhammaantood ay leeyihiin resins double bond oo aan la isku hallayn karin ayaa lagu qiimeeyaa heerka falcelinta ee polymerization-ka bilaashka ah: acryloyloxy> methacrylyloxy> vinyl> allyl. Sidaa darteed, oligomers-yada loo isticmaalo daaweynta xagjirka bilaashka ah ee UV waa inta badan resins acrylic kala duwan, sida epoxy acrylate, polyurethane acrylate, polyester acrylate, polyether acrylate, resin acrylate ama vinyl resin, waxaana inta badan la isticmaalaa waa epoxy acrylate resin, polyurethane acrylate resin iyo polyester acrylic resin.Saddexdan xabo ayaa si kooban hoos loogu soo bandhigay.
Epoxy acrylate
Qiimaha Epoxy acrylic acid waa kan ugu isticmaalka badan iyo qadarka ugu badan ee UV daaweynta oligomer hadda.Waxa laga diyaariyey xabagta epoxy iyo (meth) acrylate.Epoxy acrylates waxa loo qaybin karaa bisphenol A epoxy acrylates, phenolic epoxy acrylates, epoxy acrylates modified iyo epoxidized acrylates marka loo eego qaab dhismeedkooda, iyo bisphenol A epoxy acrylates ayaa ah kuwa 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 sidii xabagta ugu weyn ee waraaqaha lagu daweeyo iftiinka, alwaax, balaastig ah iyo daahan biraha, iyo sidoo kale sida xabagta ugu weyn ee khad daweynta iftiinka iyo koollada daweynta iftiinka.
Polyurethane acrylate
Polyurethane acrylate (PUA) waa oligomer kale oo muhiim ah oo UV ah oo la daweyn karo.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 oligomers leh noocyada ugu badan ee wax soo saarka hadda, waxaana si ballaaran loogu isticmaalaa daaha UV-daweynta, khadadka iyo xabagta.
Polyester Acrylate
Polyester acrylate (PEA) sidoo kale waa oligomer caadi ah, kaas oo laga soo diyaariyey polyester glycol miisaan yar oo acrylate ah.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, inta badan polyester acrylates 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 xannibaadda polymerization oxygen, hagaajinta heerka daaweynta, laakiin sidoo kale waxay wanaajisaa 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 UV iyo sifooyinka filimada.Marka loo eego tirada kooxaha falceliska ah, dareerayaasha firfircoon ee firfircoon ee 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. [2].
Bilawiyuhu waxa uu saamayn muhiim ah ku leeyahay heerka daawaynta alaabta UV.Badeecooyinka lagu daweeyo UV, cadadka sawir-qaade guud ahaan waa 3% ~ 5%.Intaa waxaa dheer, pigments iyo waxyaabaha lagu daro buuxinta ayaa sidoo kale saameyn muhiim ah ku leh waxqabadka kama dambaysta ah ee alaabta la daaweeyay UV.
Waqtiga boostada: Juun-15-2022