Iyini imbangela eyinhloko yokusebenzisa izinti zokukhanyisa ze-LED ngaphezu kwezinti zokukhanyisa ezilaphekayo ze-UV?
Izinamathiseli zokukhanyisa ze-LED zivame ukuphola ngemizuzwana engama-30-45 ngaphansi komthombo wokukhanya ongu-405 nanometer (nm). Izinamathiseli zokukhanyisa zendabuko, ngokuphambene, ziphola ngaphansi kwemithombo yokukhanya ye-ultraviolet (UV) enama-wavelength aphakathi kuka-320 no-380 nm. Kwabanjiniyela bokuklama, ikhono lokupholisa ngokuphelele izinamathiseli ngaphansi kokukhanya okubonakalayo livula uhla lwezinhlelo zokubopha, zokufaka kanye nokuvala ezazingafanele imikhiqizo yokukhanyisa ukukhanya, ngoba ezinhlotsheni eziningi izisekelo zingase zingadlulisi ku-wavelength ye-UV kodwa zivumele ukudluliselwa kokukhanya okubonakalayo.
Yiziphi ezinye zezici ezingathinta isikhathi sokwelashwa?
Ngokuvamile, ukukhanya kwesibani se-LED kufanele kube phakathi kuka-1 no-4 watts/cm2. Okunye okucatshangelwayo ibanga elisuka esibanini liye ongqimbeni olunamathelayo, isibonelo, uma isibani siqhelelene ne-glue, isikhathi sokulungisa siba side. Ezinye izinto okufanele uzicabangele ubukhulu bengqimba yokunamathelayo, ungqimba oluncane luzolulama ngokushesha kunengqimba ekhudlwana, nokuthi ama-substrate abonakala kanjani. Izinqubo kumele zilungiswe ukuze zithuthukise izikhathi zokulungisa, hhayi nje kuphela kumajiyometri omklamo ngamunye, kodwa futhi nohlobo lwemishini esetshenziswayo.
Uqinisekisa kanjani ukuthi inhlaka ye-LED ipholile ngokuphelele?
Uma ingcina ye-LED iqiniswe ngokuphelele, yakha indawo eqinile futhi engaqini kahle ebushelelezi njengengilazi. Inkinga ngemizamo yangaphambilini yokwelapha ngamaza amade yisimo esibizwa ngokuthi inqanda ye-oxygen. Inqanda ye-oxygen yenzeka lapho i-oxygen esemoyeni ivimbela inqubo ye-free-radical polymerization elapha cishe zonke ingcina ze-UV. Kuphumela endaweni eqinisiwe, eqiniswe kancane.
Isikhathi sokuthunyelwe: Agasti-04-2023
