Ukwelapha kwe-UV ne-EB kuvame ukuchaza ukusetshenziswa kwe-electron beam (EB), i-ultraviolet (UV) noma ukukhanya okubonakalayo ukuze kuhlanganiswe inhlanganisela yama-monomers nama-oligomers ku-substrate. Izinto ze-UV ne-EB zingakhiwa zibe yi-inki, i-coating, i-adhesive noma omunye umkhiqizo. Le nqubo yaziwa nangokuthi i-radiation curing noma i-radcure ngoba i-UV ne-EB ziyimithombo yamandla agqamile. Imithombo yamandla ye-UV noma ukukhanya okubonakalayo ngokuvamile izibani ze-mercury ezicindezelwe phakathi, izibani ze-xenon ezivuvukile, ama-LED noma ama-laser. I-EB–ngokungafani nama-photon okukhanya, avame ukumuncwa kakhulu ebusweni bezinto–inamandla okungena ngaphakathi kwendaba.
Izizathu Ezintathu Eziphoqayo Zokuguqula Ubuchwepheshe Be-UV Ne-EB
Ukonga Amandla Nokukhiqiza Okuthuthukisiwe: Njengoba izinhlelo eziningi zingenazo izinyibilikisi futhi zidinga isikhathi esingaphansi kwesekhondi yokuvezwa, inzuzo yokukhiqiza ingaba nkulu kakhulu uma kuqhathaniswa namasu okugqoka avamile. Isivinini se-inthanethi esingu-1,000 ft/min. sivamile futhi umkhiqizo usulungele ukuhlolwa nokuthunyelwa ngokushesha.
Ifanelekela Izinto Ezibucayi: Izinhlelo eziningi azinawo amanzi noma isinyibilikisi. Ngaphezu kwalokho, inqubo inikeza ukulawula okuphelele kwezinga lokushisa lokulungisa okwenza kube kuhle ukusetshenziswa ezintweni ezibucayi ezibucayi.
Kulungele Imvelo Nokusetshenziswa: Izithako ngokuvamile azincibilikisi ngakho-ke ukukhishwa kwegesi nokusha akuyona inkinga. Izinhlelo zokulungisa ukukhanya ziyahambisana cishe nazo zonke izindlela zokusebenzisa futhi zidinga isikhala esincane. Izibani ze-UV ngokuvamile zingafakwa emigqeni yokukhiqiza ekhona.
Ukwakheka Okululamayo Kwe-UV Ne-EB
Ama-monomer ayizakhi zokwakha ezilula kakhulu lapho kwenziwa khona izinto zokwenziwa eziphilayo. I-monomer elula etholakala ekudleni kwe-petroleum yi-ethylene. Imelelwa yi: H2C=CH2. Uphawu "=" phakathi kwamayunithi amabili noma ama-athomu ekhabhoni lumelela indawo ephendulayo noma, njengoba osokhemisi bebhekisela kuyo, "isibopho esiphindwe kabili" noma ukungagcwali. Yizindawo ezinjengalezi ezikwazi ukusabela ekwakheni izinto zamakhemikhali ezinkulu noma ezinkulu ezibizwa ngokuthi ama-oligomers nama-polymers.
I-polymer iyiqoqo lamayunithi amaningi (okungukuthi i-poly-) aphindaphindayo e-monomer efanayo. Igama elithi oligomer liyigama elikhethekile elisetshenziselwa ukuchaza lawo ma-polymer avame ukusabela ukuze akhe inhlanganisela enkulu yama-polymer. Izindawo zokungagcwali kuma-oligomers nama-monomers zodwa ngeke zenze ukusabela noma ukuxhumanisa.
Uma kwenzeka ukukhishwa kwemisebe yama-electron, ama-electron anamandla aphezulu asebenzisana ngqo nama-athomu esayithi elingagcwalisiwe ukuze akhiqize i-molecule esabela kakhulu. Uma i-UV noma ukukhanya okubonakalayo kusetshenziswa njengomthombo wamandla, i-photoinitiator ingezwa engxubeni. I-photoinitiator, uma ivezwa ekukhanyeni, ikhiqiza ama-free radical noma izenzo eziqala ukuxhumanisa phakathi kwezindawo ezingagcwalisiwe. Amanani e-UV &ude
Ama-Oligomer: Izakhiwo eziphelele zanoma yikuphi ukumboza, uyinki, ingcina noma i-binder exhunywe ngamandla agqamile zinqunywa kakhulu ngama-oligomer asetshenziswa ekwakhiweni. Ama-Oligomer angama-polymer anesisindo sama-molecule aphansi ngokulinganisela, iningi lawo lisekelwe ku-acrylation yezakhiwo ezahlukene. I-acrylation idlulisela ukungagcwali noma iqembu elithi "C=C" emaphethelweni e-oligomer.
Ama-Monomers: Ama-Monomers asetshenziswa kakhulu njengezinto zokunciphisa ukujiya kwezinto ezingakaphekwa ukuze kube lula ukuzisebenzisa. Angaba yinto eyodwa kuphela, aqukethe iqembu elilodwa elisabelayo noma indawo yokungagcwali, noma imisebenzi eminingi. Lokhu kungagcwali kuzivumela ukuthi zisabele futhi zifakwe ezintweni eziqediwe noma eziqediwe, kunokuba ziguquke zibe semkhathini njengoba kuvamile ngezimbozo ezivamile. Ama-Monomers asebenzayo amaningi, ngoba aqukethe izindawo ezimbili noma ngaphezulu ezisabelayo, akha izixhumanisi phakathi kwama-molecule e-oligomer namanye ama-monomers ekwakhiweni.
Ama-Photoinitiators: Lesi sithako simunca ukukhanya futhi sinesibopho sokukhiqizwa kwama-free radical noma izenzo. Ama-free radical noma izenzo ziyizinhlobo zamandla aphezulu ezibangela ukuhlangana phakathi kwezindawo zokungagcwali kwama-monomers, ama-oligomers nama-polymers. Ama-photoinitiators awadingeki ezinhlelweni ezilungisiwe ze-electron beam ngoba ama-electron ayakwazi ukuqala ukuhlangana.
Izithasiselo: Ezivame kakhulu yiziqinisi, ezivimbela ukubola kwesikhumba esigciniwe kanye nokubola ngaphambi kwesikhathi ngenxa yamazinga aphansi okukhanya. Ama-pigment ombala, amadayi, ama-defoamer, ama-adhesive promoters, ama-flatting agents, ama-wetting agents kanye nezinsiza zokushelela ziyizibonelo zezinye izithasiselo.
Isikhathi sokuthunyelwe: Jan-01-2025
