Iteknoloji ye-UV ithathwa ngabaninzi njengeteknoloji "entsha" yokunyanga iingubo zemizi-mveliso. Nangona isenokuba intsha kwabaninzi kushishino lweengubo zemizi-mveliso nezeemoto, ibikho kangangeminyaka engaphezu kwamashumi amathathu kwamanye amashishini...
Iteknoloji ye-UV ithathwa ngabaninzi njengeteknoloji "entsha" yokunyanga iingubo zoshishino. Nangona isenokuba intsha kwabaninzi kushishino lweengubo zoshishino nezeemoto, ibikho kangangeminyaka engaphezu kwamashumi amathathu kwamanye amashishini. Abantu bahamba ngeemveliso zomgangatho we-vinyl ezigqunywe yi-UV yonke imihla, kwaye uninzi lwethu lunazo emakhayeni ethu. Iteknoloji yokunyanga i-UV ikwadlala indima enkulu kushishino lwee-elektroniki zabathengi. Umzekelo, kwimeko yeefowuni eziphathwayo, iteknoloji ye-UV isetyenziswa ekugqumeni ii-housings zeplastiki, iingubo zokukhusela ii-elektroniki zangaphakathi, izinto ezinamathele kwi-UV kunye nemveliso yezikrini zemibala ezifumaneka kwezinye iifowuni. Ngokufanayo, amashishini e-optical fiber kunye ne-DVD/CD asebenzisa iingubo ze-UV kunye nee-adhesives kuphela kwaye ngebengekho njengoko sizazi namhlanje ukuba iteknoloji ye-UV ibingakhange ikwazi ukuphuhlisa.
Ngoko ke yintoni ukunyanga nge-UV? Ngokulula nje, yinkqubo yokudibanisa (ukunyanga) ii-coatings ngenkqubo yeekhemikhali eqalwe kwaye ixhaswa ngamandla e-UV. Kwisithuba esingaphantsi komzuzu, i-coat iyaguqulwa ukusuka kulwelo ukuya kwi-solid. Kukho umahluko omkhulu kwezinye zezinto ezikrwada kunye nokusebenza kwee-resin kwi-coatings, kodwa ezi zinto zibonakala kumsebenzisi we-coatings.
Izixhobo zesiqhelo zokusetyenziswa ezifana nee-spray guns ezifakwe i-air-atomized, i-HVLP, ii-rotary bells, i-flow coating, i-roll coating kunye nezinye izixhobo zisebenzisa i-UV coating. Nangona kunjalo, endaweni yokungena kwi-oven eshushu emva kokufakwa kwe-coating kunye ne-solvent flash, i-coating inyangwa ngamandla e-UV aveliswa ziinkqubo zezibane ze-UV ezicwangciswe ngendlela ekhanyisa i-coating ngomlinganiselo omncinci wamandla afunekayo ukuze kufezekiswe ukuphilisa.
Iinkampani kunye namashishini asebenzisa iimpawu zobuchwepheshe be-UV anikezele ngexabiso elimangalisayo ngokubonelela ngemveliso egqwesileyo kunye nemveliso yokugqibela egqwesileyo ngelixa ephucula inzuzo.
Ukusebenzisa iimpawu ze-UV
Zeziphi iimpawu eziphambili ezinokusetyenziswa? Okokuqala, njengoko bekutshiwo ngaphambili, ukucocwa kukhawuleza kakhulu kwaye kungenziwa kubushushu begumbi. Oku kuvumela ukucocwa ngokufanelekileyo kwezinto ezisetyenziswa kubushushu, kwaye zonke izinto ezisetyenziswa kucocwa zinokucocwa ngokukhawuleza. Ukucocwa kwe-UV ngundoqo kwimveliso ukuba umqobo (intamo yebhotile) kwinkqubo yakho lixesha elide lokucocwa. Kwakhona, isantya sivumela inkqubo enomlinganiselo omncinci kakhulu. Ukuthelekisa, ukucocwa okuqhelekileyo okufuna ukubhaka imizuzu engama-30 ngesantya somgca se-15 fpm kufuna i-450 ft ye-conveyor kwi-oven, ngelixa ukucocwa kwe-UV okucocwayo kunokufuna i-25 ft (okanye ngaphantsi) kuphela ye-conveyor.
I-UV cross-linking reaction inokubangela ukuba i-coating ibe namandla kakhulu. Nangona i-coating inokwenziwa ukuba ibe nzima kwi-applications ezifana ne-flooring, inokwenziwa ukuba iguquguquke kakhulu. Zombini ezi ntlobo ze-coating, eziqinileyo neziguquguqukayo, zisetyenziswa kwi-motor applications.
Ezi mpawu zezona ziqhuba uphuhliso oluqhubekayo kunye nokungena kwetekhnoloji ye-UV kwiingubo zeemoto. Kakade ke, kukho imingeni enxulumene nokunyangwa kwe-UV kwiingubo zemizi-mveliso. Eyona nto iphambili kumnini wenkqubo kukukwazi ukuveza zonke iindawo zeendawo ezintsonkothileyo kumandla e-UV. Umphezulu opheleleyo wengubo kufuneka uvezwe kumandla amancinci e-UV afunekayo ukuze kulungiswe ingubo. Oku kufuna uhlalutyo olucokisekileyo lwenxalenye, ukurhangqwa kweendawo, kunye nokulungiswa kwezibane ukuze kususwe iindawo zesithunzi. Nangona kunjalo, kubekho uphuculo olukhulu kwizibane, izinto eziluhlaza kunye neemveliso ezenziweyo ezoyisa uninzi lwale miqobo.
Ukukhanyisa Ngaphambili Kweemoto
Ukusetyenziswa kwemoto ethile apho i-UV iye yaba yiteknoloji eqhelekileyo kushishino lokukhanyisa iimoto, apho ii-UV coatings zisetyenziswe iminyaka engaphezu kwe-15 kwaye ngoku zilawula i-80% yemarike. Izibane zentloko zenziwe ngezinto ezimbini eziphambili ezifuna ukugqunywa - ilensi ye-polycarbonate kunye nendlu yokubonakalisa. Ilensi ifuna i-coat eqinileyo, engakrwelekiyo ukukhusela i-polycarbonate kwizinto ezibangela ukuxhatshazwa emzimbeni. Indlu yokubonakalisa ine-UV basecoat (primer) evala i-substrate kwaye inika umphezulu ogudileyo kakhulu wokwenziwa kwesinyithi. Imarike ye-reflector basecoat ngoku ngokuyintloko iphiliswe nge-100% ye-UV. Izizathu eziphambili zokwamkelwa ziphuculwe imveliso, indawo encinci yenkqubo kunye neempawu eziphezulu zokusebenza kokubonakalisa.
Nangona iipeyinti ezisetyenzisiweyo zinyangiwe yi-UV, ziqulathe isinyibilikisi. Nangona kunjalo, uninzi lwe-overspray luyaphinda lusetyenziswe kwaye luphinde lusetyenziswe kwakhona kwinkqubo, nto leyo efikelela kwi-100% yokusebenza kakuhle kokudlulisa. Ingqwalasela kuphuhliso lwexesha elizayo kukwandisa izinto eziqinileyo ukuya kwi-100% nokuphelisa imfuneko ye-oxidizer.
Iinxalenye zePlastiki zangaphandle
Enye yeendlela ezingaziwayo kakhulu kukusebenzisa i-UV clearcoat enyangekayo phezu kwee-moldings zomzimba ezibunjiweyo ngombala. Ekuqaleni, le coat yenzelwe ukunciphisa ukutyheli xa kuvela ngaphandle kwee-vinyl body side moldings. I-coat kwakufuneka ibe lukhuni kakhulu kwaye iguquguquke ukuze igcine ukunamathela ngaphandle kokuqhekeka kwezinto ezibetha i-molding. Izinto ezibangela ukusetyenziswa kwee-UV coatings kwesi sicelo kukukhawuleza kokulungiswa (unyawo lwenkqubo encinci) kunye neempawu zokusebenza ezigqwesileyo.
Iiphaneli zoMzimba ze-SMC
I-Sheet molding compound (SMC) yinto edibeneyo esetyenziswe endaweni yentsimbi kangangeminyaka engaphezu kwama-30. I-SMC ine-resin ye-polyester egcwele i-glass-fiber ephoswe kwiishiti. La maphepha emva koko afakwa kwi-compression mold aze enziwe kwiiphaneli zomzimba. I-SMC inokukhethwa kuba inciphisa iindleko zezixhobo zokuqhuba imveliso encinci, inciphisa ubunzima, inika ukubola kunye nokumelana nokugqwala, kwaye inika abantu abachwephesha ithuba elikhulu. Nangona kunjalo, enye yeengxaki ekusebenziseni i-SMC kukugqitywa kwenxalenye kwisityalo sokudibanisa. I-SMC yi-substrate enemingxuma. Xa iphaneli yomzimba, ngoku esemotweni, idlula kwi-oven yepeyinti ye-clearcoat, isiphene sepeyinti esaziwa ngokuba yi-"porosity pop" sinokwenzeka. Oku kuya kufuna ubuncinane ukulungiswa kwebala, okanye ukuba kukho "ii-pops" ezaneleyo, ukupenda ngokupheleleyo igobolondo lomzimba.
Kwiminyaka emithathu eyadlulayo, kwimizamo yokususa esi siphene, i-BASF Coatings yathengisa i-UV/thermal hybrid sealer. Isizathu sokusebenzisa i-hybrid cure kukuba i-overspray iya kunyangwa kwiindawo ezingezizo ezibalulekileyo. Inyathelo eliphambili lokususa "ii-porosity pops" kukuvezwa kwamandla e-UV, okwandisa kakhulu uxinano lwe-cross-link ye-exposed coating kwiindawo ezibalulekileyo. Ukuba i-sealer ayifumani amandla amancinci e-UV, i-coating isadlula zonke ezinye iimfuno zokusebenza.
Ukusetyenziswa kwetekhnoloji yokulungisa kabini kule meko kubonelela ngeempawu ezintsha zokugquma ngokusebenzisa ukugquma kwe-UV ngelixa kubonelela ngesici sokhuseleko sokugquma kwisicelo esixabisa kakhulu. Esi sicelo asibonisi nje kuphela indlela itekhnoloji ye-UV enokubonelela ngayo ngeempawu zokugquma ezikhethekileyo, kodwa sikwabonisa nokuba inkqubo yokugquma egquma i-UV iyasebenza kwiindawo zeemoto ezinexabiso eliphezulu, ezinomthamo omkhulu, ezinkulu nezintsonkothileyo. Esi sixhobo sokugquma sisetyenziswe kwiiphaneli zomzimba ezimalunga nesigidi.
I-OEM Clearcoat
Kunokwenzeka ukuba, icandelo lemarike yetekhnoloji ye-UV elibonakala kakhulu yiphaneli yomzimba yangaphandle yeemoto iClass A coatings. IFord Motor Company ibonise itekhnoloji ye-UV kwisithuthi somzekelo, imoto yeConcept U, kwiMboniso yeeMoto zaMazwe ngaMazwe zaseNorth America ngo-2003. Itekhnoloji yokubeka i-UV ebonisiweyo yayiyi-clearcoat ecinyiweyo ye-UV, eyenziwe kwaye yabonelelwa yi-Akzo Nobel Coatings. Le coatings yasetyenziswa kwaye yanyangwa phezu kweephaneli zomzimba ezenziwe ngezinto ezahlukeneyo.
KwiSurcar, ingqungquthela ephambili yehlabathi ye-automated coatings ebibanjwa rhoqo emva kweminyaka emibini eFransi, zombini iDuPont Performance Coatings kunye neBASF zinike iintetho ngo-2001 nango-2003 malunga netekhnoloji ye-UV-curing kwii-automated clearcoat. Umqhubi wolu phuhliso kukuphucula umba ophambili wokwaneliseka kwabathengi kwipeyinti—ukukrweleka kunye nokumelana ne-mar. Zombini iinkampani ziphuhlise i-hybrid-cure (UV kunye ne-thermal) coatings. Injongo yokulandela indlela yetekhnoloji ye-hybrid kukunciphisa ubunzima benkqubo ye-UV curing ngelixa kufezekiswa iipropati zokusebenza ezijolise kuzo.
Zombini iDuPont kunye neBASF zifake imigca yovavanyo kwiindawo zazo. Umgca weDuPont eWuppertal unamandla okunyanga umzimba wonke. Iinkampani zokugquma azibonisi nje kuphela ukusebenza kakuhle kokugquma, kodwa kufuneka zibonise isisombululo somgca wepeyinti. Enye yezibonelelo zokulungiswa kwe-UV/thermal ezichazwe yiDuPont kukuba ubude benxalenye ye-clearcoat yomgca wokugqiba bunokunciphisa ngama-50% ngokunciphisa ubude be-oven yobushushu.
Kwicala lobunjineli, iDürr System GmbH inike intetho malunga nengcamango yesityalo sokudibanisa i-UV. Enye yezinto ezibalulekileyo kwezi ngcamango yayikukuba inkqubo yokudibanisa i-UV ikwindawo yokugqiba. Izisombululo ezenziwe ngobunjineli ziquka ukufumana izibane ze-UV ngaphambi, ngaphakathi okanye emva kwe-oven yobushushu. UDürr uvakalelwa kukuba kukho izisombululo zobunjineli uninzi lweendlela zenkqubo ezibandakanya iifomyula zangoku ezisaphuhliswayo. I-Fusion UV Systems ikwaveze isixhobo esitsha - ukulinganisa inkqubo yokudibanisa i-UV kwikhompyutha kwimizimba yeemoto. Olu phuhliso lwenziwe ukuxhasa nokukhawulezisa ukwamkelwa kwetekhnoloji yokudibanisa i-UV kwizityalo zokudibanisa.
Ezinye izicelo
Umsebenzi wophuhliso uyaqhubeka kwiingubo zeplastiki ezisetyenziswa ngaphakathi kweemoto, iingubo zamavili e-alloy kunye neengubo zamavili, ii-clearcoats phezu kweendawo ezinkulu ezinombala otyhidiweyo kunye neendawo ezingaphantsi kwe-hood. Inkqubo ye-UV iyaqhubeka nokuqinisekiswa njengeqonga lokunyanga elizinzileyo. Konke okutshintshayo kukuba iingubo ze-UV ziya zinyuka ziye kwiindawo ezintsonkothileyo nezinexabiso eliphezulu. Uzinzo kunye nokusebenza ixesha elide kwenkqubo kubonakaliswe ngokusetyenziswa kokukhanyisa kwangaphambili. Yaqala kwiminyaka engaphezu kwama-20 eyadlulayo kwaye ngoku ngumgangatho weshishini.
Nangona ubuchwepheshe be-UV bunento abanye abayithatha njengento “entle”, into elifuna ukuyenza eli shishini ngale teknoloji kukubonelela ngezisombululo ezilungileyo kwiingxaki zabagqibayo. Akukho mntu usebenzisa iteknoloji ngenxa yeteknoloji. Kufuneka inike ixabiso. Ixabiso linokuvela ngendlela yokuphucula imveliso enxulumene nesantya sokulungiswa. Okanye linokuvela kwiipropati eziphuculweyo okanye ezintsha ongakhange ukwazi ukuzifezekisa ngeteknoloji yangoku. Linokuvela kumgangatho ophezulu okokuqala kuba upende uvulelekile ukungcola ixesha elincinci. Linokubonelela ngendlela yokunciphisa okanye yokususa i-VOC kwiziko lakho. Iteknoloji inokubonelela ngexabiso. Ishishini le-UV kunye nabagqibayo kufuneka baqhubeke besebenzisana ukwenza izisombululo eziphucula umgangatho womgqibayo.
Ixesha lokuthumela: Matshi-14-2023
