Nhanganyaya
Mumamiriro-ari kusimukira ekugadzira zvinhu zvinorema zvemazuva ano, huinjiniya hwechokwadi, uye{1}}kupedzwa kweindasitiri nekukurumidza, kupeta kwepamusoro uye nzira dzekurapa zvinoda kukurumidza kusati kwamboonekwa, kushanda nesimba, uye kutevedzera zvakatipoteredza. Nzira dzechinyakare dzekuomesa nemafuta-idzo dzinotsamira zvakanyanya pakunyungudika kwemvura, kupisa{4}}kukonzeresa kuchinjika{5}}kubatanidza, uye nguva refu yekubikira mukati mehovhoni yakakura, ine simba{6}}{7}}inowanzo kukanganiswa nekushandiswa kwesimba kwakawanda, nzvimbo ine ngozi inovhurika, uye nzvimbo inokuvadza isingachinji. Kuti ukunde zvipimo izvi zvakakosha, maindasitiri ekugadzira epamberi akawedzera kugamuchira tekinoroji yeultraviolet (UV) yekurapa, shanduko yekemikari uye yemuviri inoshandura magadzirirwo emvura akasarudzika kuita machira akasimba, akasimba kwazvo muchikamu chesekondi.
Pakati pese peiyi-inomhanyisa shanduko muindasitiri pane UV Coating Line, yakanyatsobatanidzwa, yakawiriraniswa, uye yakazviitira kugadzira yakagadzirwa kuti ishandise, kuenzanisa, uye kurapa nekukasika magadzirirwo emvura ane hunyanzvi achishandisa-simba reultraviolet mwaranzi. Kusiyana neakajairika masisitimu ekudziya anoda maminetsi kana maawa kuti awane kuoma kwakazara, yemazuva ano UV Coating Line inowana yakazara polymerization kanenge pakarepo pakuratidzwa kune yakanangwa simba rechiedza, ichimhanyisa zvinoshamisa kugadzirwa uku ichidzikisa tsoka dzekushanda uye mutengo wesimba. Kuongorora maomesheni emakemikari ephotopolymerization, maumbirwo akasarudzika, mainjiniya emafuta emwaranzi yeUV, uye zvakanakira maindasitiri zvemasisitimu epamusoro zvinotaridza kuti sei chiedza{{4}chakagadzirwa kurapa chave musimboti wepakona wechizvino-zvino.
1. The Chemistry of Photopolymerization: Kubva Liquid kusvika Solid
Kuti unyatsonzwisisa kuti ultraviolet kurapa inoshanda sei mukati memamiriro eindasitiri, munhu anofanira kuongorora inonakidza chemistry yephotopolymerization. Pamusoro payo, photopolymerization ndeyekupedzisira-inokurumidza kemikari inoitika apo yakaderera-molecular-huremu hwemvura monomers nemaoligomers anoshandurwa kuita{4}}morekuru-huremu, kuyambuka{6}}akabatanidzwa mapolymer network kuburikidza nechikamu chakananga chesimba rechiedza. Kusiyana nekurapa kwekupisa, uko kunoenderana nekudziya kwemukati kana kumanikidzirwa kuita kuti makemikari aite mukati menguva yakareba, kurapwa kweUV kunovimba nepamusoro-mafotoni esimba remasaisai chaiwo kuti atange kuwanda kwekuchinja kwemamolekyulu mukati memamilliseconds.
Mamichina akaoma kunzwisisa anotanga apo imwe nyanzvi, 100% solids liquid formulation-inoumbwa nemaoligomers, reactive monomers, uye sensitive photoinitiators-inoiswa muchiedza cheultraviolet chakanyanya mukati memwaranzi yakakosha{3}}inodzivirira kurapa. Maphotoinitiators akareruka-sensitive chemical compounds akagadzirwa kuti atore mawavelength akasiyana esimba rephoton. Pakubata iyi yakanangwa yemagetsi emagetsi, mamorekuru ephotoinitiator anobva apinda homolytic cleavage kana hydrogen abstraction, achitsemuka kuti abudise mhando dzepakati dzinoshanda. Idzi mhuka dzinoshanda dzinogona kuratidzira semahara radicals kana reactive cations, zvichienderana zvachose nechaiyo chemikemikari chivakwa chegadziriro yekugadzira.
Kana zvangogadzirwa, aya ma free radicals kana cations anobva arwisa ma bond epedyo akapoteredzwa mukati memvura yakatenderedza oligomers nemamonomers, zvichikonzera kusimba uye nekukurumidza cheni-kukura kwepolymerization reaction. Mamorekuru ekuvaka anobatana mumamilliseconds, achigadzira tambo yakasimba, yakaoma kunzwisisa mitatu-dimensional cross-yakabatana network. Shanduko yakadzama iyi inoshandura chimiro chenyama kubva pamhepo yemvura firimu kuita yakaoma, inodzivirira kemikari, uye ine dimensionally yakagadzika coating yakasimba kanenge ipapo ipapo. Kumhanya kunokatyamadza, nemazvo, uye kukwana kwechiedza ichi-chifambiswa nezvinoita ndizvo zvinoita kuti photopolymerization ine simba rinoshamisa munzvimbo dzepamusoro-zvinogadzirwa.
2. Zvinokosha Zvikamu zveUV-Zvinorapika Magadzirirwo
Kubudirira, kuita, uye kusimba kwenguva refu-kwenguva ipi zvayo yekurapa kweultraviolet kunoenderana zvakanyanya nekugadzirwa kwekemikari yemvura inoiswa pasubstrate. Kusiyana nezvinonyungudutsa zvechinyakare-zvinotakurwa kana mvura-mabhachi anotakurwa nemhepo anorasikirwa nekuwanda kwemhute panguva yekuomeswa, UV-maumbirwo anorapika anowanzoita-zana-zana{6}}pazana{6}}pazana masisitimu akasimba. Izvi zvinoreva kuti chikamu chimwe nechimwe chemakemikari chinogadzika uye chinova chikamu chakakosha, chechigarire chekupedzisira firimu rakasimba, rinobvisa kusvibiswa kwezvinonyungudutsa zvine njodzi zvachose.
Iwo ekutanga ekuvaka zvivakwa zveaya epamberi magadzirirwo maoligomers, anowanzo kunzi prepolymers. Oligomers inopa mamorekuru musana uye anoraira zvakakosha zvemichina uye zvemuviri zvemufirimu wakaporeswa, senge kuchinjika, kupikisa kuramba, kusimba kwesimba, abrasion kuramba, uye kusimba kwemamiriro ekunze. Makirasi akajairika emaindasitiri eoligomer anosanganisira epoxy acrylates, urethane acrylates, polyester acrylates, uye polyether acrylates, rimwe nerimwe rakagadzirwa zvine hungwaru kuti risvitse magumo chaiwo-mashandisirwo anodiwa kubva pahuni hwakaomarara hunopera kusvika kumafirimu ekurongedza epurasitiki anochinjika.
Mamonomers, anowanzo sarudzwa seanogadzirisa diluents, anowedzerwa kumusanganiswa kudzora uye kugadzirisa viscosity yekuumbwa kwemvura kuitira kuti igone kushandiswa zvakanaka kuburikidza nemaroller coaters, vacuum coaters, machira emaketeni, kana otomatiki ekupfapfaidza applicators pasina anoda kuvhurika organic solvents. Munguva yekurapa mukati meiyo ultraviolet zone, aya monomers anoshingairira copolymerize pamwe neakapoteredza oligomers, kuve nechokwadi kuti hapana chinhu chisingachinjiki chinosara chakavharirwa mufirimu. Mamonomeri anogona kunge achishanda kamwe chete, asingashande, kana achishanda zvakasiyana-siyana, zvichibvumira magadzirirwo emakemikari kuti agadzirise-kunatsa muchinjiko{3}}kuwanda kwekubatanidza, kuoma kwechiso, uye kusamira kwekemikari kwekupedzisira kukoira.
Pakupedzisira, mafotoinitiators anoita sekemikari spark plugs yekuumbwa kwese. Iwo anofanirwa kuve akanyatso kusarudzwa uye anoenderana nechaiyo spectral kubuda uye emission peaks emwenje yeUV akaiswa pauriri hwekugadzira. Kana iyo photoinitiator's optical absorption spectrum ikatadza kuenderana zvakanaka neavevelengths eiyo UV radiation masosi, maitiro ekurapa acharamba asina kukwana, achisiya iyo yekubikira yakapfava, tacky, kana zvisina kunaka polymerized.
3. Injiniya Mechanics yeUV Sources mukati meMutsetse Wekupfekedza
Iyo chizvarwa chemuviri uye inodzorwa kushandiswa kwesimba remwenje inotungamirwa neakasarudzika radiation masosi akabatanidzwa zvakananga mukuenderera mberi kwekushanda kweazvino UV Coating Line. Iyo mechanical design, optical intensity, uye spectral kubuda kugovera kwezviedza izvi zvinotarisa kudzika kwekuporesa, kuoma kwepamusoro, kuchengetedza gloss, uye kukurumidza kugadzirisa kwekugadzirisa kwese nzvimbo yekugadzira.
Kare, mwenje yepakati-yepressure mercury arc ndiyo yainyanya kushandiswa muindasitiri yemwenje yeUV. Marambi echinyakare aya anoshanda nekupfuura {{2}voltage magetsi arc kuburikidza nepressurized mercury vapor yakavharirwa mukati mechubhu{{3}purity quartz yakakwira, ichigadzira-spectrum polychromatic light rinobatanidza UVA, UVB, UVC, uye infrared wavelengths. Nepo marambi emercury arc achinyanya kushanda pakupinza mirazi yakakora uye achipa chiedza chepamusoro pamusoro, anogadzira simba rinopisa remukati mefuradhi, anoda mhepo yakaoma-inopopodza uye inotonhodza, uye iine nguva shoma yekushanda inoita kuti girobhu rigadzirwe.
Mumakore achangopfuura, chikamu chekugadzira chave nekushanduka kukuru kwehunyanzvi hwekuita chiedza-emitting diode (LED) curing systems. UV-Marambi eLED anoburitsa mwenje wemonochromatic pane chaiyo, nhete yevelengths, kazhinji inotenderedza 365, 385, kana 395 nanometers. UV{{7}Masisitimu eLED anopa mashandisirwo akanyanya kunaka: anogadzira kupisa kusingaite, achibvumira vagadziri kuti varape mabhachi pakupisa-sensitive substrates{9}}zvakaita semafirimu epurasitiki matete, mapepa, uye maveneer ehuni akagadzirwa{10}pasina kupisa kana kushatisa. Pamusoro pezvo, UV-marambi eLED anobatidzwa nekudzima ipapo nenguva isingadziyii{13}}, anopedza simba remagetsi mashoma, uye anodada nekugara kwenguva refu ekushanda anodarika zviuru makumi maviri zvemaawa, zvichiita kuti aenderane nemhoteredzo yekugadzira.
4. Operational Workflow uye Zvakanakira UV Coating Line
Kubatanidza photopolymerization chemistry, chaiyo fluid application muchina, uye advanced radiation hardware kuita inoenderera mberi maindasitiri maitiro inogadzira inoshanda kwazvo kugadzira ecosystem inozivikanwa seUV Coating Line. Kunzwisisa mashandiro anoita mitsara iyi yakasarudzika inosimbisa kukosha kwavo kwakakura munzvimbo dzakasiyana dzekugadzira, kusanganisira kupedzisa mapaneru emapuranga, graphic art, kugadzira zvemagetsi, mapurasitiki emotokari, uye simbi coil coil.
Iko kushanda kwekushanda kweiyo yakajairwa UV Coating Line inotanga nekucheneswa kwepamusoro kwepamusoro, kugezesa jecha, uye kubvisa guruva. Mapanera akacheneswa kana ma substrates anobva aenda kumichina chaiyo-yakadai se-maroller coater kana automated spray booths{3}panoiswa yunifomu ye100% solids UV formulation. Mushure mekushandisa pakarepo, substrate yakavharwa inofamba zvakanaka ichitevedza bhandi rekutakura richipinda mugedhi rakavharirwa, -yakadzivirirwa neUV exposure tunnel. Mukati metunnel iyi, -marambi akasimba eUV anovhenekera zvikamu zvinofamba, zvichiita kuti pave nekuzara kwepolymerization mukati mezvikamu zvesekondi.
Zvakanakira zveindasitiri zvekushandisa yakasanganiswa UV Coating Line yakakura. Nekuti kupora kunoitika pakarepo, mitsetse yekugadzira inogona kushanda nekumhanya zvakanyanya, ichibvisa hombe, pasi-nzvimbo-kuhovha mahovhoni anopisa kubva mufekitori. Kusavapo kwese kuvhuvhuta organic zvinonyungudutsa kunobvisa kudiwa kwezvinodhura zvinopisa oxidizer uye kunove nechokwadi chekutevedzwa kwakasimba nemitemo yakaoma yemamiriro emhepo. Uyezve, machira anokonzeresa anopa kukwirira kukwenya kuramba, kusimba kwakanyanya kwemakemikari, uye nekukurumidza kubata simba, zvichibvumira zvikamu zvakapedzwa kuti zviputirwe, kurongedzwa, uye kutumirwa nekukasira pasina kunonoka kutonhora kana kukanganiswa kwepasi.
5. Troubleshooting, Maintenance, uye Ramangwana Trends muRadiation Kurapa
Zvisinei nekusimba uye kushanda zvakanaka kweazvino ultraviolet coating masisitimu, kuchengetedza kushanda kwepamusoro pane yakakwirira-yekumhanya tambo yekugadzira kunoda kutariswa kwakasimba, kuchengetedzwa kwekudzivirira, uye kuomerera kune zvimiro zvekushanda. Matambudziko akajairika anosanganikwa nawo mukati mekushanda kwezuva nezuva anosanganisira kuvharirwa kweokisijeni{{2}uko mweya weokisijeni wemuchadenga unopindirana nepamusoro pema radicals, zvichisiya ine microscopic tacky layer pajasi-uye kusapora kunokonzerwa nekusawirirana kwerambi nekufamba kwenguva. Kuti uderedze kuvharika kweokisijeni, maformula anowanzo shandisa specialized amine-synergists kana kumhanyisa mitsetse pasi pemagumbeze enitrogen inert, ukuwo nyanzvi dzinoshandisa maredhiyomita kuyera kuwanda kwesimba reUV uye kuona kushanda kwakakwana kwerambi.
Tichitarisa ramangwana, tsvakiridzo inoenderera mberi nebudiriro iri kufambisa mabhindauko anonakidza munzvimbo yese yeradiation-inorapa. Magadzirirwo ebio{{2}e UV{{3}anorapika oligomers anobva mumafuta echirimwa anogona kuvandudzwa uye akashandiswa patsva ari kusimbaradza, achigadzirisa kukura kwemabasa ekusimbaradza kwekambani pasina kuregera kuita basa. Pamusoro pezvo, kubatanidzwa kwemasensa akangwara, automated irradiance feedback loops, uye Internet of Things monitoring muUV Coating Line inogonesa kufembera kugadzirisa uye kunyatsogadzirisa nguva-. Sezvo maindasitiri achiramba achida kumhanya kwepamusoro kwekugadzira, kuderera kwetsoka dzezvakatipoteredza, uye kuita kwepamusoro kwezvinhu, tekinoroji yekurapa ultraviolet uye sainzi yemhando yepamusoro yephotopolymerization icharamba iri pamberi peinjiniya yekugadzira yemazuva ano.
Mhedziso
Muchidimbu, tekinoroji yekurapa ultraviolet inomiririra kuchinjika kwekukunda kwephotochemistry, optical fizikisi, uye inorema maindasitiri engineering. Nekushandisa misimboti yakakosha yephotopolymerization, nzvimbo dzekugadzira dzinogona kusandura magadzirirwo emvura kuita marata akasimba mukati memamilliseconds, zvichibudirira kunzvenga simba-rakadzama uye nguva{2}}kupedza zvinogumira zvechinyakare kuomesa nekupisa.
Seyakagadzirwa mukati meiyo yemazuva ano UV Coating Line, iyi tekinoroji yepamberi inopa kumhanya kusingaenzaniswi kwekugadzira, kusimba kwemuviri, uye kutevedzera kwakasimba kwemamiriro ekunze nekubvisa zvinonyungudutsa zvinonyungudutsa zvachose. Kubva pakuchengetedza zvigadzirwa zvemagetsi nehardwood pasi kusvika pakupedza-kurongedzerwa kwakanaka uye zvinhu zvemotokari, sainzi yechiedza{2}yakabatidzwa yekurapa inoenderera mberi ichikurudzira hunyanzvi hweindasitiri, zvichinyatsoratidza kuti photonics nemwaranzi{3}kurapa sainzi ndiwo mbiru dzinokosha dzekugadzirwa kwemazuva ano.
