Wolemba Lawrence (Larry) Van Iseghem ndi Purezidenti/CEO wa Van Technologies, Inc.
Pochita bizinesi ndi makasitomala akumafakitale padziko lonse lapansi, tayankha mafunso angapo odabwitsa ndipo tapereka mayankho ambiri okhudzana ndi zokutira zochiritsika ndi UV. Amene ali m’munsiwa ndi ena mwa mafunso amene amafunsidwa kawirikawiri, ndipo mayankho amene ali m’munsiwa angapereke chidziŵitso chothandiza.
1. Kodi zokutira zochizika ndi UV ndi chiyani?
M'makampani opangira matabwa, pali mitundu itatu yayikulu ya zokutira zochiritsira za UV.
100% yogwira ntchito (nthawi zina imatchedwa 100% zolimba) Zopaka zochizira UV ndi mankhwala amadzimadzi omwe alibe zosungunulira kapena madzi. Mukagwiritsidwa ntchito, zokutirazo zimawonekera nthawi yomweyo ku mphamvu ya UV popanda kufunika kowuma kapena kusungunuka musanachiritsidwe. Chophimbacho chimagwira ntchito kuti chikhale cholimba pamwamba pazitsulo zomwe zimafotokozedwa ndikutchedwa photopolymerization. Popeza palibe mpweya wofunikira musanachiritsidwe, kugwiritsa ntchito ndi kuchiritsa kumakhala kothandiza kwambiri komanso kotsika mtengo.
Zovala zokhala ndi madzi kapena zosungunulira zosakanizidwa ndi UV zochiritsira mwachiwonekere zimakhala ndi madzi kapena zosungunulira kuti muchepetse zomwe zimagwira (kapena zolimba). Kuchepetsa kolimba kumeneku kumapangitsa kuti pakhale kosavuta kuwongolera makulidwe a filimu yonyowa, komanso / kapena kuwongolera kukhuthala kwa zokutira. Pogwiritsidwa ntchito, zokutira za UV izi zimagwiritsidwa ntchito pamatabwa kudzera m'njira zosiyanasiyana ndipo zimafunika kuziwumitsa bwino musanachiritse machiritso a UV.
Zopaka za ufa zochizika ndi UV zilinso ndi nyimbo zolimba 100% ndipo nthawi zambiri zimagwiritsidwa ntchito pazigawo zopangira ma electrostatic. Akagwiritsidwa ntchito, gawo lapansili limatenthedwa kuti lisungunuke ufa, womwe umatuluka kuti upangire filimu yapamwamba. Gawo lapansi lokutidwa ndiye limatha kuwululidwa nthawi yomweyo ndi mphamvu za UV kuti zithandizire kuchiza. The chifukwa pamwamba filimu salinso kutentha deformable kapena tcheru.
Pali mitundu yosiyanasiyana ya zokutira zochizika ndi UV zomwe zili ndi njira yachiwiri yochizira (kutentha koyambitsa, chinyezi, ndi zina) zomwe zimatha kuchiritsa madera omwe alibe mphamvu ya UV. Zovala izi nthawi zambiri zimatchedwa zokutira zochiritsa pawiri.
Mosasamala mtundu wa zokutira zochiritsira za UV zomwe zimagwiritsidwa ntchito, chomaliza chomaliza kapena chosanjikiza chimapereka mawonekedwe apadera, kulimba komanso kukana.
2. Kodi zokutira zochizika ndi UV zimamatira bwino bwanji kumitundu yosiyanasiyana yamatabwa, kuphatikiza mitundu yamitengo yamafuta?
Zovala zochizika ndi UV zimamatira kwambiri mitundu yambiri yamatabwa. Ndikofunikira kuwonetsetsa kuti pali machiritso okwanira kuti aperekedwe kudzera mu machiritso ndi kumamatira kofanana ndi gawo lapansi.
Pali mitundu ina yomwe mwachilengedwe imakhala yamafuta kwambiri ndipo ingafunike kugwiritsa ntchito choyambira cholimbikitsira, kapena "tiecoat." Van Technologies yachita kafukufuku wambiri ndikutukuka pakumatira kwa zokutira zochiritsika ndi UV kumitengo iyi. Zomwe zachitika posachedwa zikuphatikiza chosindikizira chimodzi chochizika ndi UV chomwe chimalepheretsa mafuta, kuyamwa ndi phula kuti zisasokoneze kumatira kwa topcoat yochiritsika ndi UV.
Kapenanso, mafuta omwe amapezeka pamtunda amatha kuchotsedwa atangotsala pang'ono kuphimba ndi kupukuta ndi acetone kapena zosungunulira zina zoyenera. Nsalu yopanda lint, yoyamwa imanyowetsedwa ndi zosungunulira kenako ndikupukuta pamwamba pa nkhuni. Pamwamba amaloledwa kuti ziume ndiyeno UV-curable ❖ kuyanika angagwiritsidwe ntchito. Kuchotsedwa kwa mafuta apamwamba ndi zonyansa zina kumalimbikitsa kumamatira kotsatira kwa chophimba chogwiritsidwa ntchito pamtunda wa nkhuni.
3. Ndi madontho amtundu wanji omwe amagwirizana ndi zokutira za UV?
Madontho aliwonse omwe afotokozedwa apa amatha kusindikizidwa bwino komanso yokutidwa pamwamba ndi 100% UV-curable, zosungunulira-zochepetsera UV-curable, waterborne-UV-curable, kapena UV-curable powder systems. Chifukwa chake, pali mitundu ingapo yosakanikirana yomwe imapangitsa kuti madontho ambiri pamsika akhale oyenera zokutira zilizonse zochiritsika ndi UV. Pali, komabe, zowunikira zina zomwe ndizodziwika kuti zitsimikizire kuti nsonga zamtundu wamatabwa zimakhalapo.
Madontho Ochokera M'madzi ndi Madontho Omwe Amakhala M'madzi-UV-Ochiritsika:Mukapaka 100% UV-curable, zosungunulira-zochepetsera UV-curable kapena UV-curable powder sealers/topcoats pa madontho odzadza ndi madzi, ndikofunikira kuti banga likhale louma mokwanira kuti zisawonongeke pakupaka kufanana, kuphatikiza peel lalanje, maso a nsomba, cratering. , kusambira ndi kusambira. Zofooka zotere zimachitika chifukwa cha kutsika kwapansi kwa zokutira zomwe zimagwiritsidwa ntchito pokhudzana ndi kuthamanga kwamadzi otsalira pamwamba pa madzi kuchokera ku banga logwiritsidwa ntchito.
Kupaka utoto wothira m'madzi-UV-curable, komabe, nthawi zambiri kumakhala kokhululuka. Madontho omwe amagwiritsidwa ntchito amatha kuwonetsa chinyontho popanda zotsatirapo zoyipa mukamagwiritsa ntchito zosindikizira / ma topcoat ena amadzi-UV. Chinyezi chotsalira kapena madzi kuchokera pamadontho amafalikira mosavuta kudzera pa chosindikizira chamadzi-UV / topcoat panthawi yoyanika. Ndikulangizidwa kwambiri, komabe, kuyesa madontho aliwonse ndi chosindikizira/chovala chapamwamba pachoyesa choyimira musanaperekeze kumalizidwa.
Madontho Ochokera ku Mafuta ndi Osungunulidwa:Ngakhale pakhoza kukhala dongosolo lomwe lingagwiritsidwe ntchito pa madontho osakwanira owuma opangidwa ndi mafuta kapena osungunulira, nthawi zambiri ndikofunikira, ndipo ndikulimbikitsidwa kwambiri, kuti ziume izi musanagwiritse ntchito sealer/topcoat iliyonse. Madontho owumitsa pang'onopang'ono amtunduwu angafunike mpaka maola 24 mpaka 48 (kapena kupitilira apo) kuti muwume kwathunthu. Apanso, kuyesa dongosolo pamtengo woyimira nkhuni kumalangizidwa.
100% Madontho Ochiritsika ndi UV:Nthawi zambiri, zokutira zochiritsira za 100% za UV zimawonetsa kukana kwa mankhwala ndi madzi zikachiritsidwa kwathunthu. Kukaniza uku kumapangitsa kuti zikhale zovuta kuti zokutira zomwe zimagwiritsidwa ntchito pambuyo pake zimamatire bwino pokhapokha malo otetezedwa ndi UV atatsekedwa mokwanira kuti alole kulumikizana ndi makina. Ngakhale madontho 100% ochiritsika ndi UV omwe adapangidwa kuti azilandira zokutira pambuyo pake amaperekedwa, madontho ambiri ochizika ndi UV a 100% amafunika kuchotsedwa kapena kuchiritsidwa pang'ono (otchedwa "B" siteji kapena kuchiritsa kotupa) kuti alimbikitse kumamatira kwa intercoat. Masitepe a "B" amabweretsa malo otsalira osinthika omwe amatha kuyanjana ndi zokutira zomwe zimagwiritsidwa ntchito ndi UV pamene zimachiritsidwa kwathunthu. Masitepe a "B" amalolanso kutsekeka pang'ono kukana kapena kudula njere zilizonse zomwe zingachitike chifukwa chothimbirira. Kupaka chisindikizo chosalala kapena topcoat kumapangitsa kuti ma intercoat azimatira bwino kwambiri.
Chodetsa nkhawa china chokhala ndi madontho 100% ochiritsika ndi UV chimakhudzana ndi mitundu yakuda. Madontho a pigmented kwambiri (ndi zokutira zokhala ndi pigment) amachita bwino mukamagwiritsa ntchito nyali za UV zomwe zimapereka mphamvu kufupi ndi kuwala kowoneka bwino. Nyali wamba wa UV wokhala ndi gallium kuphatikiza nyali wamba wa mercury ndi chisankho chabwino kwambiri. Nyali za UV LED zomwe zimatulutsa 395 nm ndi/kapena 405 nm zimagwira ntchito bwino ndi makina amtundu wamtundu wa 365 nm ndi 385 nm arrays. Kuphatikiza apo, makina a nyale a UV omwe amapereka mphamvu yayikulu ya UV (mW/cm2) ndi kuchuluka kwa mphamvu (mJ/cm2) kulimbikitsa machiritso abwino kudzera pa banga kapena utoto wopaka utoto.
Pomaliza, monga momwe zilili ndi madontho ena omwe tatchulidwa pamwambapa, kuyezetsa kumalangizidwa musanagwire ntchito ndi malo enieni kuti adetsedwa ndi kutha. Onetsetsani musanachiritse!
4. Kodi filimu yapamwamba kwambiri / yochepa kwambiri yopangira zokutira 100% UV ndi chiyani?
Zopaka za ufa zochizika ndi UV mwaukadaulo ndi zokutira zochizika ndi UV 100%, ndipo makulidwe ake opaka amachepetsedwa ndi mphamvu yamagetsi yokopa yomwe imamanga ufawo pamwamba pakumalizidwa. Ndikwabwino kufunafuna upangiri wa opanga zokutira ufa wa UV.
Ponena za zokutira zamadzimadzi 100% zochiritsika ndi UV, makulidwe afilimu onyowa omwe agwiritsidwa ntchito amapangitsa kuti pafupifupi filimu yowuma ifanane ndi kuchiritsa kwa UV. Kuchepa kwina sikungapeweke koma nthawi zambiri kumakhala ndi zotsatira zochepa. Pali, komabe, ntchito zaukadaulo kwambiri zomwe zimatchula zolimba kwambiri kapena zopapatiza zololera zamakanema. M'mikhalidwe iyi, kuyeza kwa filimu yochiritsidwa mwachindunji kungathe kuchitidwa kuti agwirizane ndi filimu yonyowa ndi youma.
Kukula komaliza komwe kungathe kukwaniritsidwa kumadalira chemistry ya zokutira zochiritsika ndi UV ndi momwe zimapangidwira. Pali makina omwe amapangidwa kuti apereke ma depositi owonda kwambiri afilimu pakati pa 0.2 mil - 0.5 mil (5µ - 15µ) ndi ena omwe angapereke makulidwe opitilira 0.5 mainchesi (12 mm). Nthawi zambiri, zokutira zotetezedwa ndi UV zomwe zimakhala ndi kachulukidwe kakang'ono kolumikizana, monga ma urethane acrylate formulations, sizitha kupanga makulidwe apamwamba a filimu pagawo limodzi lopaka. Kuchuluka kwa shrinkage pakuchiritsidwa kungayambitse kusweka kwakukulu kwa zokutira zomwe zimagwiritsidwa ntchito mokhuthala. Kumanga kwakukulu kapena makulidwe omaliza atha kupezedwabe pogwiritsa ntchito zokutira zochizika ndi UV za kachulukidwe kakang'ono kolumikizana ndi ulalo pogwiritsa ntchito zigawo zingapo zoonda komanso kupanga mchenga ndi/kapena “B” pakati pa gulu lililonse kulimbikitsa kumamatira kwa malaya.
Njira yochiritsira ya zokutira zambiri zochizika ndi UV zimatchedwa "free radical initiated." Njira yochiritsirayi imatha kutengeka ndi okosijeni mumpweya womwe umachedwetsa kapena kulepheretsa kuchira msanga. Kuchedwetsa kumeneku nthawi zambiri kumatchedwa kuletsa kwa okosijeni ndipo ndikofunikira kwambiri poyesa kukwaniritsa makulidwe owonda kwambiri afilimu. M'mafilimu opyapyala, pamtunda mpaka kuchuluka kwa zokutira zomwe zimagwiritsidwa ntchito ndizokwera kwambiri poyerekeza ndi makulidwe a filimu yokhuthala. Chifukwa chake, makulidwe a filimu yopyapyala amatha kutenga mpweya wabwino kwambiri ndipo amachiritsa pang'onopang'ono. Nthawi zambiri, pamwamba pa mapeto ake amakhala osachiritsika mokwanira ndipo amawonetsa kumverera kwamafuta / mafuta. Pofuna kuthana ndi kutsekeka kwa okosijeni, mpweya wa mpweya monga nitrogen ndi carbon dioxide ukhoza kudutsa pamwamba pa mankhwala kuti achotse kuchulukana kwa okosijeni, motero amalola kuchira msanga.
5. Kodi zokutira za UV zimamveka bwino bwanji?
Zovala za 100% zochiritsika ndi UV zimatha kuwonetsa bwino kwambiri ndipo zimapikisana ndi malaya owoneka bwino kwambiri pamsika. Kuwonjezera apo, akagwiritsidwa ntchito pamitengo, amatulutsa kukongola kopambana ndi kuzama kwa chifanizirocho. Chochititsa chidwi kwambiri ndi machitidwe osiyanasiyana a aliphatic urethane acrylate omwe amamveka bwino komanso opanda mtundu akagwiritsidwa ntchito pazinthu zosiyanasiyana, kuphatikizapo matabwa. Kuphatikiza apo, zokutira za aliphatic polyurethane acrylate ndizokhazikika ndipo zimakana kusinthika ndi zaka. Ndikofunika kunena kuti zokutira zotsika kwambiri zimamwaza kuwala kwambiri kuposa zokutira zonyezimira ndipo potero zimakhala zomveka bwino. Poyerekeza ndi mafakitale ena opaka, komabe, zokutira zochiritsira za UV 100% ndizofanana ngati sizoposa.
Zovala zokhala ndi madzi za UV zomwe zilipo pakadali pano zitha kupangidwa kuti zimveke bwino kwambiri, kutentha kwamitengo komanso kuyankha kuti zigwirizane ndi makina omaliza abwino kwambiri. Kumveka bwino, gloss, kuyankha kwamatabwa ndi zina zogwirira ntchito za zokutira zochiritsira za UV zomwe zikupezeka pamsika masiku ano ndizabwino kwambiri zikachokera kwa opanga apamwamba.
6. Kodi pali zokutira zamitundu kapena zakuda zochilitsidwa ndi UV?
Inde, zokutira zamitundu kapena zopaka utoto zimapezeka mosavuta mumitundu yonse ya zokutira zochiritsika ndi UV koma pali zinthu zofunika kuziganizira kuti mupeze zotsatira zabwino. Mfundo yoyamba komanso yofunika kwambiri ndi yakuti mitundu ina imasokoneza mphamvu ya mphamvu ya UV kupatsira, kapena kulowa, zokutira zomwe zimagwiritsidwa ntchito ndi UV. Ma electromagnetic spectrum akuwonetsedwa mu Chithunzi 1, ndipo zitha kuwoneka kuti kuwala kowoneka bwino kumakhala moyandikana ndi mawonekedwe a UV. Sipekitiramu ndi mosalekeza popanda mizere yomveka (wavelengths) ya malire. Choncho, dera limodzi pang'onopang'ono limasakanikirana ndi dera loyandikana nalo. Poganizira dera la kuwala kowoneka, pali zonena zasayansi zomwe zimayambira pa 400 nm mpaka 780 nm, pomwe zonena zina zimati zimayambira pa 350 nm mpaka 800 nm. Pazokambiranazi, zimangofunika kuti tizindikire kuti mitundu ina imatha kuletsa kufalikira kwa mafunde ena a UV kapena ma radiation.
Popeza cholinga chake chili pa kutalika kwa UV kapena dera la radiation, tiyeni tifufuze chigawocho mwatsatanetsatane. Chithunzi 2 chikuwonetsa mgwirizano pakati pa kutalika kwa mawonekedwe a kuwala kowoneka ndi mtundu wofananira womwe uli wothandiza pakutchinga. Ndikofunikiranso kudziwa kuti mitundu nthawi zambiri imatenga mafunde osiyanasiyana kotero kuti utoto wofiira ukhoza kufalikira motalikirapo kotero kuti ukhoza kulowa m'chigawo cha UVA. Choncho, mitundu yodetsa nkhaŵa kwambiri idzadutsa mtundu wachikasu - lalanje - wofiira ndipo mitundu iyi ikhoza kusokoneza machiritso ogwira mtima.
Sikuti zopaka utoto zimangosokoneza kuchiritsa kwa UV, zimafunikanso kuganiziridwa mukamagwiritsa ntchito zokutira zoyera, monga zoyambira zochiritsira za UV ndi utoto wapa topcoat. Ganizirani za kuyamwa kwa white pigment titanium dioxide (TiO2), monga momwe tawonetsera pa Chithunzi 3. TiO2 imawonetsa kuyamwa kwamphamvu m'dera lonse la UV ndipo komabe, zokutira zoyera, zochiritsika ndi UV zimachiritsidwa bwino. Bwanji? Yankho lake ndi lopangidwa mosamala ndi wopanga zokutira ndi wopanga mogwirizana ndi kugwiritsa ntchito nyali zoyenerera za UV kuchiritsa. Nyali zanthawi zonse za UV zomwe zimagwiritsidwa ntchito zimatulutsa mphamvu monga momwe zasonyezedwera mu Chithunzi 4.
Nyali iliyonse yowonetsedwa imachokera ku mercury, koma popanga mercury ndi chinthu china chachitsulo, mpweyawo ukhoza kusunthira kumadera ena a kutalika kwa mafunde. Pankhani ya zokutira zochokera ku TiO2, zoyera, zochiritsika ndi UV, mphamvu yoperekedwa ndi nyali yokhazikika ya mercury idzatsekedwa bwino. Ena mwa mafunde apamwamba omwe amaperekedwa amatha kuchiritsa koma kutalika kwa nthawi yofunikira kuti muchiritsidwe kwathunthu sikungakhale kothandiza. Mwa doping nyali ya mercury ndi gallium, komabe, pali mphamvu zambiri zomwe zimakhala zothandiza m'dera lomwe silinatsekedwe bwino ndi TiO2. Kugwiritsa ntchito mitundu iwiri ya nyale, pochiritsa (pogwiritsa ntchito gallium doped) ndi machiritso apamwamba (pogwiritsa ntchito mercury wamba) zitha kukwaniritsidwa (Chithunzi 5).
Pomaliza, zokutira zamitundu kapena zakuda zochilitsidwa ndi UV ziyenera kupangidwa pogwiritsa ntchito zowunikira bwino kwambiri kuti mphamvu ya UV - mawonekedwe a kuwala kowoneka bwino akuperekedwa ndi nyali - agwiritsidwe ntchito moyenera kuchiza.
Mafunso Ena?
Pankhani ya mafunso aliwonse omwe angabwere, musazengereze kufunsa kampani yomwe ikugulitsapo kapena yamtsogolo ya zokutira, zida ndi machitidwe owongolera. Mayankho abwino amapezeka kuti athandizire kupanga zisankho zogwira mtima, zotetezeka komanso zopindulitsa. u
Lawrence (Larry) Van Iseghem ndi purezidenti/CEO wa Van Technologies, Inc. Van Technologies ali ndi zaka zopitilira 30 pa zokutira zochizika ndi UV, kuyambira ngati kampani ya R&D koma idasinthidwa mwachangu kukhala wopanga Application Specific Advanced Coatings™ yopangira zokutira mafakitale. zipangizo padziko lonse lapansi. Zovala zochizika ndi UV nthawi zonse zakhala zofunikira kwambiri, limodzi ndi matekinoloje ena "obiriwira", ndikugogomezera magwiridwe antchito ofanana kapena kupitilira umisiri wamba. Van Technologies imapanga zokutira zamafakitale za GreenLight Coatings™ molingana ndi ISO-9001:2015 yovomerezeka ya kasamalidwe kabwino kachitidwe. Kuti mudziwe zambiri, pitaniwww.greenlightcoatings.com.
Nthawi yotumiza: Jul-22-2023
