NguLawrence (Larry) uVan Iseghem nguMongameli/i-CEO yeVan Technologies, Inc.
Ngexesha lokuqhuba ishishini kunye nabathengi bemizi-mveliso kumazwe ngamazwe, siye sajongana nenani elimangalisayo lemibuzo kwaye sinikeze izisombululo ezininzi ezinxulumene neengubo ezinyangekayo ze-UV. Okulandelayo yeminye yemibuzo edla ngokuphindaphindiweyo, yaye iimpendulo ezihamba nalo zisenokunikela ingqiqo eluncedo.
1. Ziziphi iinaliti ezinyangekayo zeUV?
Kwishishini lokugqiba iinkuni, kukho iintlobo ezintathu eziphambili ze-UV-curable coatings.
I-100% esebenzayo (ngamanye amaxesha ibizwa ngokuba yi-100% yezinto eziqinileyo) Iingubo ezinyangekayo ze-UV ziyimixube yeekhemikhali ezingamanzi ezingenaso nasiphi na isinyibilikisi okanye amanzi. Emva kwesicelo, i-coating ibonakaliswe ngokukhawuleza kumandla e-UV ngaphandle kwesidingo sokumisa okanye ukukhupha umoya ngaphambi kokunyanga. Ukwakheka kokwaleka okusetyenzisiweyo kusabela ukwenza umaleko oqinileyo womphezulu ngenkqubo esebenzayo echazwe kwaye ibizwa ngokufanelekileyo ngokuba yifotopolymerization. Kuba akukho mphunga ufunekayo phambi kokuba unyange, ukufakwa kunye nenkqubo yonyango isebenza ngendlela encomekayo kwaye iyabiza.
I-hybride efakwe emanzini okanye i-solvent-borne hybrid UV-curable coatings ngokucacileyo inamanzi okanye i-solvent ukunciphisa umxholo osebenzayo (okanye oqinileyo). Oku kuncitshiswa komxholo oqinileyo kuvumela ukulula okukhulu ekulawuleni ubuninzi befilimu emanzi esetyenzisiweyo, kunye / okanye ekulawuleni i-viscosity yengubo. Ekusetyenzisweni, ezi zogquma ze-UV zifakwa kumphezulu womthi ngeendlela ezahlukeneyo kwaye kufuneka zomiswe ngokupheleleyo phambi kokunyangwa kwe-UV.
Iingubo zomgubo ezinyangekayo ze-UV nazo ziyi-100% zemixube eqinileyo kwaye ngokuqhelekileyo isetyenziswa kwi-conductive substrates ngomtsalane we-electrostatic. Emva kokuba isetyenzisiwe, i-substrate iyatshisa ukuze inyibilike umgubo, ophuma ngaphandle ukuze wenze ifilimu yomhlaba. I-substrate egqunyiweyo inokuvezwa ngoko nangoko kumandla e-UV ukuququzelela unyango. Ifilim ephuma kumphezulu ayisekho ubushushu okanye ubushushu.
Kukho iintlobo ngeentlobo zolu tyaliso lwe-UV olunyangekayo olukhoyo olunesixhobo sokunyanga sesibini (ubushushu busebenze, busebenze ukufuma, njl.njl) ezinokubonelela ngonyango kwimimandla engavezwanga kumandla e-UV. Ezi zogquma zidla ngokubizwa ngokuba ziingubo ezimbini zokunyanga.
Kungakhathaliseki ukuba luhlobo luni lwe-UV-curable coating esetyenzisiweyo, ukugqiba umgangatho wokugqibela okanye umaleko ubonelela ngomgangatho obalaseleyo, ukuqina kunye neempawu zokuxhathisa.
2. Ingaba iileyiti ezinyangekayo ze-UV zibambelela njani kwiintlobo ezahlukeneyo zemithi, kubandakanywa neendidi zomthi oneoli?
Iingubo ezinyangekayo ze-UV zibonisa ukunamathela okugqwesileyo kwiintlobo ezininzi zomthi. Kubalulekile ukuqiniseka ukuba kukho iimeko ezaneleyo zokunyanga ukubonelela ngonyango kunye nokuncamathela okuhambelanayo kwi-substrate.
Kukho iintlobo ezithile ezinamafutha kakhulu ngokwendalo kwaye zinokufuna ukusetyenziswa kwe-primer yokukhuthaza ukuncamathelisa, okanye “i-tiecoat.” I-Van Technologies yenze uphando oluninzi kunye nophuhliso ekunamatheleni kwiingubo ezinyangekayo ze-UV kwezi ntlobo zemithi. Uphuhliso lwakutsha nje lubandakanya isitywini esinye esinyangekayo se-UV esithintela ioyile, incindi kunye nepitch ekuphazamiseni ukuncamathela kwe-topcoat enyangekayo ye-UV.
Ngaphandle koko, ioli ekhoyo kwindawo yokhuni inokususwa ngaphambi nje kwesicelo sokugubungela ngokusula nge-acetone okanye enye i-solvent efanelekileyo. Ilaphu elingena-lint, elifunxayo liqala limanziswe ngesinyibilikisi lize lisulwe phezu komphezulu womthi. Umphezulu uvumelekile ukuba wome kwaye emva koko i-UV-curable coating ingafakwa. Ukususwa kweoli engaphezulu kunye nezinye izinto ezingcolileyo zikhuthaza ukunamathela okulandelayo kwengubo esetyenzisiweyo kwindawo yomthi.
3. Loluphi uhlobo lwamabala oluhambelana neengubo ze-UV?
Nawaphi na amabala achazwe apha anokuthi atywinwe ngokufanelekileyo kwaye afakwe phezulu nge-100% ye-UV-enyangekayo, i-solvent-encitshisiweyo ye-UV-curable, i-waterborne-UV-curable, okanye i-UV-curable powder systems. Ke ngoko, kukho inani leendibaniselwano ezisebenzayo ezenza uninzi lwazo naliphi na ibala kwimarike lilungele nakuphi na ukugquma okunyangekayo kwe-UV. Kukho, nangona kunjalo, iingqwalasela ezithile eziphawuleka ukuqinisekisa ukuhambelana kukho ukugqitywa komphezulu womthi.
Amabala aphuma ngaManzi kunye namabala aNgamanzi-UV-Anyangekayo:Xa ufaka i-100% ye-UV-enyangekayo, i-solvent-encitshisiweyo ye-UV-enyangekayo okanye i-UV-curable powder sealers/topcoat phezu kwamabala aphuma emanzini, kubalulekile ukuba ibala lome ngokupheleleyo ukunqanda iziphene ekunxibelelaneni okufanayo, kubandakanya ixolo le-orenji, amehlo okuloba, icratering. , ukuhlanganisana kunye nokurhuqa. Ezo ziphene zenzeka ngenxa yokunyanzeliswa komphezulu ophantsi weengubo ezisetyenzisiweyo ngokunxulumene noxinzelelo oluphezulu lwamanzi olushiyekileyo ukusuka kwibala elisetyenzisiweyo.
Ukusetyenziswa kwengubo enokunyangeka emanzini-UV, nangona kunjalo, ngokubanzi kuxolela ngakumbi. Ibala elisetyenzisiweyo lingabonakalisa ukufuma ngaphandle kweziphumo ezibi xa usebenzisa izitywini/iingubo ezingaphezulu ezinyangekayo ze-UV. Ukufuma okushiyekileyo okanye amanzi asuka kwi-stain application aya kuthi asasazeke ngokulula nge-sealer/UV sealer/topcoat esetyenzisiweyo ngexesha lenkqubo yokomisa. Kucetyiswa ngamandla, nangona kunjalo, ukuvavanya naliphi na ibala kunye ne-sealer/indibaniselwano yedyasi kwisampulu yovavanyo lommeli phambi kokuzibophelela kowona mgangatho ukuze ugqitywe.
Amabala asekwe kwi-oyile kunye ne-Solvent-Borne:Nangona kunokubakho inkqubo enokuthi isetyenziswe kwi-oyile eyomileyo ngokungonelanga okanye amabala aphethwe yi-solvent, ngokuqhelekileyo kuyimfuneko, kwaye iyacetyiswa kakhulu, ukuba yomise ngokupheleleyo la mabala phambi kokusetyenziswa kwayo nayiphi na i-sealer / topcoat. Ukomisa okucothayo kwamabala alolu hlobo kunokufuna ukuya kutsho kwiiyure ezingama-24 ukuya kwezingama-48 (okanye ngaphezulu) ukuphumeza ukoma okupheleleyo. Kwakhona, ukuvavanya inkqubo kwindawo yommeli womthi uyacetyiswa.
100% amabala anyangekayo yi-UV:Ngokubanzi, i-100% yeengubo ezinyangekayo ze-UV zibonisa ukuxhathisa kweekhemikhali kunye namanzi xa zinyangekile ngokupheleleyo. Oku kuxhathisa kwenza kube nzima ukuba emva koko kugalelwe iiyaleko ukubambelela kakuhle ngaphandle kokuba umphezulu onyangekileyo we-UV ugxothwe ngokwaneleyo ukuze kuvumeleke ukudityaniswa koomatshini. Nangona i-100% yamabala anyangekayo e-UV ayilelwe ukuba ayamkeleke emva koko ityatyekwe emva koko inikwa, uninzi lwe-100% amabala anyangekayo yi-UV kufuneka agrunjwe okanye anyangelwe inxenye (ebizwa ngokuba yinqanaba “B” okanye iqhuma lokunyanga) ukukhuthaza ukunamathela kwe-intercoat. Umboniso "B" uphumela kwiindawo ezishiyekileyo ezisebenzayo kumaleko webala oya kuhlangana kunye ne-UV-enyangekayo ye-UV njengoko iphantsi kweemeko zonyango ngokupheleleyo. Iqonga elithi “B” likwavumela ukwaphuka okuthambileyo kwi-denib okanye ukusika naluphi na unyuso lweenkozo olunokuthi lwenzeke ngenxa yokufakwa kwamabala. Ukutywinwa okugudileyo okanye i-topcoat isicelo siya kubangela ukuncamathela okugqwesileyo kwe-intercoat.
Enye inkxalabo ene-100% yamabala anyangekayo yi-UV iphathelene nemibala emnyama. Amabala anambala obomvu (kunye neengubo ezinemibala ngokubanzi) zisebenza ngcono xa usebenzisa izibane ze-UV ezihambisa amandla kufutshane nokukhanya okubonakalayo. Izibane eziqhelekileyo ze-UV ezifakwe kwi-gallium zidityaniswe nezibane eziqhelekileyo ze-mercury lukhetho oluhle kakhulu. Izibane ze-UV ze-LED ezikhupha i-395 nm kunye / okanye i-405 nm zisebenza ngcono kunye neenkqubo ze-pigmented ezihambelana ne-365 nm kunye ne-385 nm arrays. Ngapha koko, iinkqubo zesibane ze-UV ezihambisa amandla amakhulu e-UV (mW/cm2) kunye noxinano lwamandla (mJ/cm2) khuthaza unyango olungcono ngokusebenzisa ibala elisetyenzisiweyo okanye umaleko we-pigmented coating.
Okokugqibela, njengezinye iinkqubo zamabala ezikhankanywe apha ngasentla, uvavanyo luyacetyiswa ngaphambi kokuba kusetyenzwe ngomphezulu wokwenene ukuba ungcoliswe kwaye ugqitywe. Qiniseka ngaphambi kokuba unyango!
4. Yintoni eyona nto iphezulu / incinci yefilimu eyakhiwe kwi-100% yeengubo ze-UV?
Iingubo zomgubo ezinyangekayo ze-UV ngokwezobuchwepheshe ziyi-100% yokwaleka kwe-UV-enyangekayo, kwaye ubukhulu bazo obusetyenziswayo buthintelwa ngamandla ombane wokutsala umtsalane obophelela umgubo kumphezulu xa ugqityiwe. Kungcono ukufuna ingcebiso yomenzi we-UV yomgubo wokugquma.
Ngokumalunga ne-100% yolwelo olunyangekayo lwe-UV, ubukhulu befilimu emanzi esetyenzisiweyo buya kukhokelela kubunzima befilimu eyomileyo efanayo emva kokunyangwa kwe-UV. Okunye ukucutheka akunakuphepheka kodwa ngokuqhelekileyo kuba nesiphumo esincinci. Kukho, nangona kunjalo, usetyenziso oluphezulu lobuchwephesha oluchaza ukunyamezelwa kobunzima befilimu obungqingqwa kakhulu okanye obumxinwa. Kwezi meko, umlinganiselo wefilimu ophiliswe ngokuthe ngqo unokwenziwa ukudibanisa umanzi nobukhulu befilimu eyomileyo.
Ubukhulu bokugqibela obunyangekileyo obunokufezekiswa buya kuxhomekeka kwikhemikhali ye-UV-curable coating kunye nendlela eyenziwe ngayo. Kukho iisistim ezifumanekayo ezenzelwe ukubonelela ngeediphozithi zefilimu ezibhityileyo kakhulu phakathi kwe-0.2 mil - 0.5 mil (5µ - 15µ) kunye nezinye ezinokubonelela ngokutyeba okungaphezulu kwe-0.5 intshi (12 mm). Ngokuqhelekileyo, iingubo ezinyangwa yi-UV ezinoxinaniso oluphezulu lwe-cross-link, ezifana ne-urethane acrylate formulations, ayinakho ukutyeba okuphezulu kwefilimu kwinqanaba elinye elisetyenzisiweyo. Iqondo lokushwabana xa kunyangwa liya kubangela ukuqhekeka okuqatha kotyatyeko olugalelweyo. Ukuphakama okuphezulu okanye ukutyeba kokugqiba kusenokufezekiswa kusetyenziswa i-UV-enyangekayo yoxinaniso lwekhonkco olunqamlezileyo ngokufaka iileya ezininzi ezicekethekileyo kunye nokuba nesanti kunye/okanye u-“B” weqonga phakathi komaleko ngamnye ukukhuthaza ukuncamathela kwe-intercoat.
Indlela esebenzayo yokunyanga uninzi lwezotyatho ezinyangekayo yi-UV ibizwa ngokuba “yi-free radical initiated.” Le ndlela yokunyanga ichaphazeleka lula yioksijini esemoyeni ethi icothe okanye ithintele isantya sonyango. Oku kucotha kuhlala kubizwa ngokuba kukuthintelwa kweoksijini kwaye kubaluleke kakhulu xa uzama ukufezekisa ukuqina kwefilimu encinci kakhulu. Kwiifilimu ezicekethekileyo, indawo engaphezulu ukuya kumthamo opheleleyo wesambatho esisetyenzisiweyo siphezulu xa kuthelekiswa nobukhulu befilimu. Ke ngoko, ubungqingqwa befilimu obubhityileyo buchaphazeleka ngakumbi kukuthintelwa kweoksijini kwaye bunyange kancinci. Rhoqo, umphezulu wesiphelo uhlala unganyangekanga kwaye ubonisa ukuziva okunamafutha / okunamafutha. Ukuchasana nokuthintelwa kweoksijini, iigesi ezingasebenziyo njengenitrogen kunye nekharbon diokside zinokugqithiswa phezu komhlaba ngexesha lokunyanga ukuze kususwe ingxinano yeoksijini, ngaloo ndlela ivumela ukuphiliswa ngokupheleleyo nangokukhawuleza.
5. Icace kangakanani into yokugquma kweUV?
I-100% yeengubo ezinyangekayo ze-UV zinokubonisa ukucaca okugqwesileyo kwaye ziya kukhuphisana nezona dyasi zicacileyo ezicacileyo kushishino. Ukongezelela, xa ziqatywa emthini, zikhupha ubuhle nobunzulu bomfanekiso. Eyona nto inomdla kakhulu ziinkqubo ezahlukeneyo ze-aliphatic urethane acrylate ezicace ngokuphawulekayo kwaye ezingenambala xa zisetyenziswa kwiindawo ezininzi ezahlukeneyo, kubandakanya umthi. Ngaphaya koko, iingubo ze-aliphatic polyurethane acrylate zizinzile kwaye ziyaxhathisa ukuguga. Kubalulekile ukuphawula ukuba iingubo eziphantsi-gloss ezisezantsi zisasaza ukukhanya okungaphezulu kweglosi kwaye kuya kuba nokucaca okuphantsi. Ngokubhekiselele kwezinye iikhemistri zokugquma, nangona kunjalo, i-100% yeengubo ezinyangekayo ze-UV ziyalingana ukuba azikho ngaphezulu.
Iingubo ezikwazi ukunyangeka eziphuma emanzini-UV ezikhoyo ngeli xesha zinokuqulunqwa ukuze zinike ukucaca okukhethekileyo, ubushushu bomthi kunye nokuphendula ukukhuphisana nezona nkqubo zibalaseleyo zokugqiba. Ukucaca, iglosi, impendulo yomthi kunye nezinye iipropathi ezisebenzayo ze-UV-curable coatings ezikhoyo kwiimarike namhlanje zigqwesileyo xa zifunyenwe kubenzi bomgangatho.
6. Ingaba zikhona iileyiti ezinombala okanye ezipigmented ezinyangwa yiUV?
Ewe, iingubo ezinemibala okanye ezinemibala zifumaneka ngokulula kuzo zonke iintlobo zeengubo ezinyangekayo ze-UV kodwa kukho izinto ekufuneka ziqwalaselwe ukuze ufumane iziphumo ezizezona zilungileyo. Eyokuqala neyona nto ibalulekileyo kukuba imibala ethile iphazamisana namandla e-UV ukusasaza, okanye ukugqobhoza, kwimayiko esetyenziswayo enyangekayo yi-UV. I-spectrum ye-electromagnetic ibonisiwe kuMfanekiso woku-1, kwaye kunokubonwa ukuba ukukhanya okubonakalayo kukufuphi ngokukhawuleza kwi-spectrum ye-UV. I-spectrum yinkqubo eqhubekayo ngaphandle kwemigca ecacileyo (i-wavelengths) yokucandwa kwemida. Ngoko ke, ummandla omnye ngokuthe ngcembe udibana nommandla omelene nawo. Ukuqwalasela ummandla wokukhanya obonakalayo, kukho amabango athile enzululwazi ukuba isuka kwi-400 nm ukuya kwi-780 nm, kanti amanye amabango athi isuka kwi-350 nm ukuya kwi-800 nm. Kule ngxoxo, kubalulekile kuphela ukuba siqaphele ukuba imibala ethile inokuthintela ngokufanelekileyo ukuhanjiswa kwamaza athile e-UV okanye imitha.
Kuba ingqwalasela ikumaza e-UV okanye ummandla wemitha, masiwuphonononge lo mmandla ngokubanzi. Umfanekiso wesi-2 ubonisa ubudlelwane phakathi kobude bokukhanya okubonakalayo kunye nombala ohambelanayo osebenzayo ekuwuthinteleni. Kukwabalulekile ukwazi ukuba imibala yemibala ihlala ithatha uluhlu lwamaza obude kangangokuba umbala obomvu unokuthatha uluhlu oluninzi kangangokuba unokufunxa ngokuyinxenye kwingingqi ye-UVA. Ngoko ke, imibala ebaluleke kakhulu iya kudlula i-yellow-orange-red range kwaye le mibala inokuphazamisa unyango olusebenzayo.
Imibalabala ayiphazamisi nje ukunyangwa kwe-UV, ikwayinto yokuqwalaselwa xa usebenzisa iingubo ezimhlophe ezinemibala emhlophe, njengeeprimer ezinyangekayo ze-UV kunye nepeyinti ye-topcoat. Qwalasela i-absorpct spectrum ye-white pigment titanium dioxide (TiO2), njengoko kubonisiwe kuMfanekiso 3. I-TiO2 ibonisa ukufunxa okunamandla kakhulu kuwo wonke ummandla we-UV kwaye kunjalo, iingubo ezimhlophe, ezinyangekayo ze-UV zinyangwa ngokufanelekileyo. Njani? Impendulo ixhomekeke ekuqulunqweni ngononophelo ngumphuhlisi wezogquma kunye nomenzi wekhonsathi kunye nokusetyenziswa kwezibane ze-UV ezifanelekileyo zokunyanga. Izibane eziqhelekileyo, eziqhelekileyo ze-UV ezisetyenziswayo zikhupha amandla njengoko kubonisiwe kuMfanekiso 4.
Isibane ngasinye esibonisiweyo sisekwe kwimekyuri, kodwa ngokudopa imekyuri ngenye into yesinyithi, ukukhutshwa kungatshintshela kweminye imimandla yobude bamaza. Kwimeko ye-TiO2-based based, emhlophe, i-UV-curable coatings, amandla ahanjiswa sisibane esiqhelekileyo se-mercury siya kuvalwa ngokufanelekileyo. Amanye amaza aphezulu anikezelweyo anokubonelela ngonyango kodwa ubude bexesha elifunekayo ukuze unyange ngokupheleleyo lusenokungasebenzi. Ngokusebenzisa i-doping isibane se-mercury nge-gallium, nangona kunjalo, kukho ubuninzi bamandla aluncedo kummandla ongathintelwanga ngokufanelekileyo yi-TiO2. Ukusebenzisa indibaniselwano yeentlobo zombini zezibane, zombini ngokunyanga (usebenzisa i-gallium doped) kunye nokunyanga kwendawo (ukusebenzisa i-mercury eqhelekileyo) inokufezekiswa (Umfanekiso wesi-5).
Okokugqibela, iileyiti ezinombala okanye ezinemibala enyangekayo ye-UV kufuneka zenziwe kusetyenziswa ezona fotoinitiators zifanelekileyo ukuze amandla e-UV - amaza okukhanya abonakalayo ahanjiswa zizibane - asetyenziswe ngokufanelekileyo ukunyanga.
Eminye Imibuzo?
Ngokuphathelele kuyo nayiphi na imibuzo ephakamayo, ungaze ungathandabuzi ukubuza umboneleli wenkampani wangoku okanye wexesha elizayo weengubo, izixhobo kunye neenkqubo zokulawula inkqubo. Iimpendulo ezilungileyo ziyafumaneka ukunceda ukwenza izigqibo ezisebenzayo, ezikhuselekileyo nezinengeniso. u
ULawrence (Larry) Van Iseghem ngumongameli/i-CEO yeVan Technologies, Inc. UVan Technologies uneminyaka engaphezulu kwama-30 yamava kwiingubo ezinyangekayo ze-UV, eqala njengenkampani ye-R&D kodwa yaguqulwa ngokukhawuleza yaba ngumvelisi we-Application Specific Advanced Coatings™ esebenza ngokutyabeka kwimizi-mveliso. izixhobo kwihlabathi jikelele. Iingubo ezinyangekayo ze-UV bezisoloko ziyingqwalasela ephambili, kunye nezinye iitekhnoloji zokugquma "eziluhlaza", kunye nogxininiso ekusebenzeni okulinganayo okanye ukodlula itekhnoloji eqhelekileyo. I-Van Technologies yenza i-GreenLight Coatings™ ibhrendi yeengubo zemizi-mveliso ngokwe-ISO-9001:2015 eqinisekisiweyo inkqubo yolawulo lomgangatho. Ukuze ufumane inkcazelo engakumbi, tyelelawww.greenlightcoatings.com.
Ixesha lokuposa: Jul-22-2023
