Inkqubo yokunyanga i-UV kunye ne-EB

Ukulungiswa kwe-UV kunye ne-EB kudla ngokuchaza ukusetyenziswa kwe-electron beam (EB), i-ultraviolet (UV) okanye ukukhanya okubonakalayo ukuze kwenziwe i-polymer indibaniselwano yee-monomers kunye nee-oligomers kwi-substrate. Izinto ze-UV kunye ne-EB zinokwenziwa zibe yi-inki, i-coating, i-adhesive okanye enye imveliso. Le nkqubo ikwaziwa ngokuba yi-radiation curing okanye i-radcure kuba i-UV kunye ne-EB zimithombo yamandla agqamileyo. Imithombo yamandla ye-UV okanye ukukhanya okubonakalayo ngokuqhelekileyo zizibane ze-mercury ezixineneyo, izibane ze-xenon ezishukumayo, ii-LED okanye ii-laser. I-EB–ngokungafaniyo nee-photons zokukhanya, ezidla ngokufunxwa ikakhulu kumphezulu wezinto–zinokukwazi ukungena ngaphakathi kwezinto.
Izizathu Ezintathu Ezinyanzelekileyo Zokuguqukela KwiTekhnoloji Ye-UV Ne-EB
Ukonga Amandla kunye neMveliso ePhucukileyo: Ekubeni uninzi lweenkqubo lungenazo izinyibilikisi kwaye lufuna ngaphantsi kwesekondi yokuvezwa, inzuzo yemveliso inokuba nkulu kakhulu xa ithelekiswa neendlela zokugquma eziqhelekileyo. Isantya sewebhu se-1,000 ft/min. siqhelekile kwaye imveliso ilungele ukuvavanywa nokuthunyelwa ngoko nangoko.

Ilungele ii-Substrates ezibuthathaka: Uninzi lweenkqubo azinamanzi okanye isinyibilikisi. Ukongeza, le nkqubo inika ulawulo olupheleleyo lobushushu bokunyanga, nto leyo eyenza ukuba ilungele ukusetyenziswa kwii-substrates ezibuthathaka kubushushu.

Ilungele okusingqongileyo kwaye isebenziseka lula: Izinto ezidityanisiweyo zihlala zingenazinyibilikisi ngoko ke ukukhutshwa komoya kunye nokutsha akuyongxaki. Iinkqubo zokulungisa ukukhanya ziyahambelana phantse nazo zonke iindlela zokusetyenziswa kwaye zifuna ubuncinci besithuba. Izibane ze-UV zihlala zifakelwa kwimigca yemveliso ekhoyo.

Izinto eziNyangekayo ze-UV kunye ne-EB
Iimonomer zezona zilula zokwakha apho kwenziwa khona izinto eziphilayo ezenziwe ngokwenziwa. Imonomer elula efumaneka kwi-petroleum feed yi-ethylene. Imelwe yi: H2C=CH2. Uphawu "=" phakathi kweeyunithi ezimbini okanye iiathom zekhabhoni lumele indawo esabelayo okanye, njengoko iingcali zekhemistri zisitsho, "ikhonkco eliphindwe kabini" okanye ukungagcwali. Ziindawo ezinje ezikwaziyo ukuphendula ukuze zenze izinto ezinkulu okanye ezinkulu zeekhemikhali ezibizwa ngokuba zii-oligomers kunye neepolymers.

I-polymer yiqela leeyunithi ezininzi (oko kukuthi i-poly-) eziphindaphindwayo ze-monomer efanayo. Igama elithi oligomer ligama elikhethekileyo elisetyenziselwa ukuchaza ezo polymers ezidla ngokuphendulwa ngakumbi ukuze zenze indibaniselwano enkulu yee-polymers. Iindawo ezingagcwaliyo kwii-oligomers nakwii-monomers zodwa aziyi kuhlangabezana ne-reaction okanye i-crosslinking.

Kwimeko yonyango lwe-electron beam, ii-electron ezinamandla aphezulu zisebenzisana ngokuthe ngqo neeathom zesiza esingagcwaliyo ukuze zenze imolekyuli esabela kakhulu. Ukuba i-UV okanye ukukhanya okubonakalayo kusetyenziswa njengomthombo wamandla, kongezwa i-photoinitiator kumxube. I-photoinitiator, xa ivezwa ekukhanyeni, ivelisa ii-free radical okanye izenzo eziqala ukudibana phakathi kweendawo ezingagcwaliyo. iiponenti ze-UV &ude

Ii-Oligomers: Iipropati zizonke zalo naluphi na uphahla, i-inki, i-adhesive okanye i-binder edityaniswe ngamandla agqamileyo zimiselwa ikakhulu zii-oligomers ezisetyenziswa kwifomyula. Ii-Oligomers zii-polymers ezinobunzima obuphantsi ngokwe-molecular, uninzi lwazo lusekelwe kwi-acrylation yezakhiwo ezahlukeneyo. I-acrylation inika i-unsaturation okanye iqela le-"C=C" kwiziphelo ze-oligomer.

IiMonomers: IiMonomers zisetyenziswa kakhulu njengezinto ezinyibilikisayo ukunciphisa i-viscosity yezinto ezingakavuthwa ukuze kube lula ukuzisebenzisa. Zingaba zi-monofunctional, ziqulathe iqela elinye kuphela elisabelayo okanye indawo engakavuthwa, okanye izinto ezininzi. Oku kungavuthwa kuzivumela ukuba zenze i-reaction kwaye zifakwe kwizinto ezicociweyo okanye ezigqityiweyo, endaweni yokuba ziguquke emoyeni njengoko kuqhelekile kwiingubo zesiqhelo. IiMonomers ezininzi, kuba ziqulathe iindawo ezimbini okanye ngaphezulu ezisabelayo, zenza amakhonkco phakathi kwee-molecule ze-oligomer kunye nezinye ii-monomers kwifomyula.

Ii-Photoinitiators: Esi sithako sifunxa ukukhanya kwaye sinoxanduva lokuvelisa ii-free radicals okanye izenzo. Ii-free radicals okanye izenzo ziintlobo zamandla aphezulu ezibangela ukudibana phakathi kweendawo zokungagcwali kwee-monomers, ii-oligomers kunye nee-polymers. Ii-photoinitiators azifuneki kwiinkqubo ezilungisiweyo ze-electron beam kuba ii-electron ziyakwazi ukuqalisa ukudibana.

Izongezo: Ezona zixhaphakileyo ziziqinisi, ezithintela ukubola kwesikhumba kwindawo yokugcina kunye nokubola kwangaphambi kwexesha ngenxa yamanqanaba aphantsi okukhanya. Iipigment zombala, iidayi, ii-defoamers, izinto ezikhuthaza ukunamathela, izinto ezithe tyaba, izinto ezimanzi kunye nezinto ezincedisa ukutyibilika zimizekelo yezinye izongezo.