Isebenza kanjani ukuphulukiswa kwe-UV LED? Umhlahlandlela we-Photopolymerization
Isebenza kanjani ukuphulukiswa kwe-UV LED? Ukusetshenziswa kwe-UV LED Curing Solutions
Uma usebenza ekunyatheliseni, ekukhiqizeni i-3D, noma i-elekthronikhi, ukwazi ukuthi ukuphulukiswa kwe-UV LED kusebenza kanjani kuzoqinisekisa ukuthi usebenzisa kakhulu amathuluzi akho. Izimboni zishintshwa ekusetshenzisweni kwezixazululo zokuphulukisa ze-UV LED ngenxa yokuthi zihlanzekile, zisebenza kahle futhi zishesha kunezindlela zendabuko zokuphulukisa. Le bhulogi ichaza ukuthi ukuphulukiswa kwe-UV LED kusebenza kanjani?
Kuyini ukwelapha ngama-LED e-UV?
Ukuphulukisa ekukhanyeni kwe-UV ye-LED kubhekisa ekusetshenzisweni kokukhanya kusuka kuma-diode kuya ekuphulukiseni kwe-UV UV nge-UV LED. Lokhu kuhilela ukuqala ukusabela kwamakhemikhali okwenza lukhuni ama-inks noma izinto zokumboza, okusho ukuthi izinamathiselo nazo zidlula ekushintsheni, ziqine. Le ndlela ithandwa kakhulu ngezinzuzo zemvelo ezinikezwayo, kanye nesivinini sayo nokunemba.
Isebenza kanjani ukuphulukisa ngama-LED e-UV?
Ukusetshenziswa kwama-LED ngaphezu kwalokho kusebenza ukwandisa ububanzi 'bokwelapha ukukhanya' ngoba ama-Light Emitting Diode (LEDs) angasetshenziswa ukukhiqiza ukukhanya kwe-UV. Ukuphulukisa (ukuqina noma ukomisa) kwama-inks, ukumboza, okunamathisela, nama-resin kwenziwa ngokushesha ngokuwaveza ekukhanyeni kwe-ultraviolet kusuka emithonjeni ye-LED D. Ngokungafani nezibani zendabuko ze-mercury, ama-LED e-UV alungiselelwe ukwenza kusebenze ama-photoinitiators ezintweni ezilaphekayo ze-UV.
- Le nqubo iqala ngama-photoinitiators, ama-molecule akhona ezintweni ezimunca ukukhanya kwe-UV. La ma-molecule, uma echazwe ku-wavelength efanele ye-UV, athola i-cleavage futhi aqalise i-photopolymerization, okuyinqubo yokudala ama-polymers aqinile, axhunyiwe kusuka kuma-monomers nama-oligomers, akha izindawo ezihlala njalo. Lesi sinyathelo sakha indawo eqinile engakoma cishe ngokushesha, ngemizuzwana.
- Ukuphulukisa ngokukhanya kwe-UV LED kunezinzuzo eziningi: kusebenza kahle kakhulu futhi akunayo i-mercury kuwo, kusemazingeni okushisa aphansi kunezinye izindlela, ngakho-ke kungcono kuma-substrates abucayi njengamapulasitiki noma amafilimu amancane. Iphinde ikhulise ijubane lokukhiqiza, ukuqina kwezingxenye ezikhiqizwayo, futhi yehlise i-carbon footprint yenqubo.
- Kusuka ekunyatheliseni kwezimboni nasekuhlanganisweni kwe-elekthronikhi kuya ekukhiqizeni izingxenye zezimoto, ukuphrinta kwe-3D, ngisho namadivayisi wezokwelapha, izinhlelo zokusebenza azipheli. Lobu buchwepheshe benza kube nokwenzeka ukufeza isivinini nokunemba, okwenza kube kuhle ekukhiqizeni kwanamuhla.
Mechanics of UV LED Curing
1. I-Photopolymerization
Inhliziyo ye-i-polymerization yesithombe yenza idivayisi yokuphulukisa ye-UV LED isebenze. Ama-photoinitiators, azwela ukukhanya, ayakwazi ukumunca ukukhanya kwe-UV futhi akhiqize izinhlobo ezisebenzayo kakhulu ezikwazi ukuqala i-polymerization. Ngokwenza kanjalo, ama-monomers awuketshezi nama-oligomers akhona aguqulwa abe ama-polymers aqinile.
2. Indima yama-photoinitiators
Ukugxila okukhethekile emkhakheni we-polymer photoinitiators kunamandla okushayela ekwelapheni i-UV futhi kudinga ukunakwa okuningi. Ukuqala inqubo ye-polymerization, ukuchaza ukukhanya kwe-UV kubalulekile, njengoba kubamba ukukhanya futhi kukhiqiza ama-radicals wamahhala noma ama-cations. Isifunda sokukhetha i-photoinitiator, ubude bokukhanya kwe-UV obusetshenzisiwe kanye nesicelo esidingekayo kuzothinta ukukhetha.
3. Cross-linking
Yonke inqubo yokwelapha iyi-monomer ne-oligomer cross-linking, amaketanga noma izixhumanisi ezinesiphambano zakha isakhiwo esinezinhlangothi ezintathu esaziwa ngokuthi inethiwekhi ye-polymer. Lokhu kuxhumanisa isiphambano yikho okunikeza amandla, ukuqina, nokuthuthukiswa kokumelana nezinto eziphulukisiwe.
4. Ubuchwepheshe be-UV LED
Ngokungafani nezibani ezijwayelekile ze-mercury, izibani ze-UV LED zibhekwa njengezomnotho njengoba zilondoloza amandla, zinesikhathi sokuphila isikhathi eside, futhi zikhipha ukushisa okuncane. Ngaphezu kwalokho, ama-LED e-UV, adingekayo ekwelapheni, angakhipha ukukhanya kwama-wavelengths athile afana ne-365nm, 385nm, 395nm, 405nm, ngisho ne-405nm.
Izinzuzo ze-UV LED Curing
1. Izikhathi zokuphulukisa ziyashesha
Ijubane lapho amagagasi okukhanya acutshungulwa khona liyashesha kakhulu ezinqubweni zokuphulukisa, okwandisa ijubane nokusebenza kahle kokukhiqiza.
2. Ukusebenza kahle kwamandla
Ngenxa yokusetshenziswa kwamandla aphansi, ama-LED e-UV anikeza ukonga okukhulu kwamandla.
3. Amazinga okushisa apholile
Imisebe ephansi yokushisa ivumela ukwelashwa kwe-substrates ezwela ukushisa ngaphandle kokulimaza i-substrate.
4. Isikhathi Sokuphila Isikhathi Eside
Isikhathi sokuphila se-LED sikhulu kakhulu kune-UV yesibani, okusho izindleko eziphansi zokusebenza kohlelo.
5. Imvelo-Friendly
Ngoba ayikho i-mercury futhi ayikho i-ozone ekhiqizwayo, i-eco-friendly kakhudlwana
Ukugcina ukusebenza kahle kwe-UV LED ngesikhathi sokuphulukisa
Izici ezithile zinquma inani lokunakwa nokuphathwa okudingekayo ukuze usebenzise ngokugcwele izinzuzo ezinikezwa izinhlelo zokuphulukisa ze-UV LED. Enye yalezi zici ukulawulwa kokushisa enkabeni yohlelo lwe-UV LED. Ukuphathwa kokushisa kuyisihluthulelo sokuphila okuqhubekayo kokusebenza nokuthembeka kwama-diode. Ukugcina amazinga okusebenza, abakhiqizi basebenzisa ama-apparatus wokupholisa athuthukile ukulawula ukugeleza kokushisa. Ukuqonda iwindi lenqubo njengoba kuchaziwe yimpahla kanye nesicelo kubaluleke ngokulinganayo. Iwindi lenqubo libhekisela kumanani amancane futhi aphezulu wokuminyana kwamandla kanye nokukhanya okuphezulu, okuthi, uma kungalandelwa, kuzoholela ezicini ezingaphelele neziphukile. Ukufeza ukuphulukiswa okuphelele kungenzeka kuphela ngokulinganisa ngokucophelela kwamapharamitha amaningi ukuqinisekisa izakhiwo ezilinganiselayo zezinto ezibonakalayo.
Ukuhamba kokuphulukisa ngama-LED e-UV
Isisusa ngemuva kwegebe elikhulayo phakathi kwe-laser nezinhlelo ezijwayelekile zokuphulukisa uhlu lwezinzuzo ezinikezwe ekusebenzeni, ukusebenza kahle kanye nemvelo.
Ama-LED e-UV ashintsha umdlalo uma kukhulunywa ngezinhlelo zokukhanyisa ezilawulwayo. Izinhlelo ze-LED zinezici eziningi uma ziqhathaniswa nobunye ubuchwepheshe bokwelapha, kufaka phakathi:
Ukunciphisa isikhathi esichithwa ekwelapheni izinto:
Lokhu kungenye yezinzuzo eziheha kakhulu njengoba kuqinisekisa izindlela zokukhiqiza ezithuthukisiwe zobuchwepheshe. Uma kuqhathaniswa nezinhlelo ezingezona ze-LED, izinhlelo eziphulukisiwe ze-LED zicubungula izingxenye ngama-milliseconds, okuholela ekukhiqizeni okukhulu.
Amazinga okushisa apholile:
Ukuphulukisa kusetshenziswa ama-UV LED akunamandla kakhulu okushisa ngoba kukhiqiza ukushisa okuncane kwe-infrared (IR). Lokhu kuyimpumelelo yezinto ezizwela ukushisa njengamafilimu amancane, amanye amapulasitiki, kanye ne-elekthronikhi ethile njengoba zingakhubazeka noma zithobeke isithunzi ngenxa yokushisa okukhulu okukhishwa izibani ezijwayelekile ze-UV.
Longer Lifespan (UV LEDs):
Uma kuqhathaniswa nezibani ze-mercury arc ezinempilo yamahora ayizinkulungwane ezimbalwa, izibani ze-UV LED zinamashumi ezinkulungwane zamahora. Lokhu kwandisa isikhathi sokuphumula kwesondlo, kunciphisa izindleko zokushintshwa kwezibani, futhi kunciphisa imvamisa yokulungiswa okudingekayo.
Isiphetho
Isebenza kanjani ukuphulukiswa kwe-UV LED? Ukuphulukiswa kwe-UV LED kuyisixazululo esisheshayo, esihlanzekile, futhi esisebenza kahle sezimboni ezidinga ukubopha ukusebenza okuphezulu, ukuphrinta, noma ukumboza. Ukuphulukisa kwayo okubandayo, amandla okuphulukisa okusheshayo, kanye nesikhathi sokuphila isikhathi eside kuyenza ilungele izingxenye ezibucayi ku-elekthronikhi, amadivayisi wezokwelapha, ama-optics, nangaphezulu. Njengoba ubuchwepheshe buthuthuka, ukwelashwa kwe-UV LED kuyaqhubeka nokufaka esikhundleni sezindlela ezindala, kuletha izinto ezintsha, ukusimama, nokukhiqiza okuthuthukisiwe ezinkambisweni zanamuhla zokukhiqiza.
