Yintoni esona sizathu siphambili sokusebenzisa izincamathelisi eziphilisayo ze-LED ngaphezu kwezincamathelisi eziphilisayo ze-UV?
Izincamathelisi zokukhanyisa ze-LED zihlala zinyangeka kwimizuzwana engama-30-45 phantsi komthombo wokukhanya we-405 nanometer (nm). Izincamathelisi zokukhanyisa zemveli, ngokuchaseneyo, zinyangeka phantsi kwemithombo yokukhanya ye-ultraviolet (UV) enamaza okukhanya aphakathi kwama-320 nama-380 nm. Kwiinjineli zoyilo, ukukwazi ukunyanga ngokupheleleyo izincamathelisi phantsi kokukhanya okubonakalayo kuvula uluhlu lwezicelo zokubopha, ukugquma kunye nokutywina ezazingafanelekanga ngaphambili kwiimveliso zokukhanyisa ukukhanya, kuba kwizicelo ezininzi izithinteli zisenokungadluli kwi-UV wavelength kodwa zivumele ukuhanjiswa kokukhanya okubonakalayo.
Ziziphi ezinye zezinto ezinokuchaphazela ixesha lokuphiliswa kwesifo?
Ngokwesiqhelo, ukukhanya kwesibane se-LED kufuneka kube phakathi kwe-1 kunye ne-4 watts/cm2. Enye into ekufuneka iqwalaselwe kumgama ukusuka kwisibane ukuya kumaleko wokuncamathelisa, umzekelo, ukuba isibane sikude kakhulu ne-adhesive, kokukhona ixesha lokunyanga lide. Ezinye izinto ekufuneka ziqwalaselwe bubukhulu bomaleko wokuncamathelisa, umaleko omncinci uya kunyanga ngokukhawuleza kunomaleko omkhulu, kunye nokuba ii-substrates zibonakala kangakanani. Iinkqubo kufuneka zilungiswe ukuze kuphuculwe amaxesha okunyanga, ngokusekelwe kungekuphela nje kwijiyometri yoyilo ngalunye, kodwa nakuhlobo lwezixhobo ezisetyenzisiweyo.
Uqinisekisa njani ukuba i-LED adhesive inyangeke ngokupheleleyo?
Xa iglu ye-LED inyangiwe ngokupheleleyo, yenza umphezulu oqinileyo nongathambekiyo ogudileyo njengeglasi. Ingxaki ngemizamo yangaphambili yokunyanga kwiiwavelength ezinde yimeko ebizwa ngokuba yi-oxygen inhibition. Ukuthintela i-oksijini kwenzeka xa i-oxygen esemoyeni ithintela inkqubo ye-free-radical polymerization ephilisa phantse zonke iiglu ze-UV. Oku kubangela umphezulu othambekileyo nowomileyo kancinci.
Ukuthintela ioksijini kubonakala kakhulu kwiindawo ezingenamqobo kwioksijini esemoyeni. Umzekelo, ukuthintela ioksijini kuya kuba kubi ngakumbi kwindawo yokufaka i-conformal coating ene-open-air cure kunokuba kunjalo kwindawo yokufaka i-glue phakathi kweengqimba zeglasi.
Ziziphi ezinye zeengenelo zokhuseleko lwe-LED curing adhesives xa kuthelekiswa ne-UV curing?
Izibane ze-UV zinokubangela ingxaki yokhuseleko kuba zinokubangela ukutsha kolusu kunye nokwenzakala kwamehlo; nangona izibane ze-LED zisafuna ukusetyenziswa nezixhobo zokuzikhusela ezifanelekileyo, azinawo umngcipheko ofanayo nowabanye abasebenzisa i-UV.
Ziziphi iinkqubo ezikhethekileyo ezinikezelwa yiMaster Bond ngaloo ndlela yonyango ngesibane se-LED?
Uthotho lwe-Master Bond LED 400 lubonelela ngoluhlu lweepropati zobunjineli ezinqwenelekayo kwaye ngokuxhomekeke kudidi, lungasetyenziselwa ukubopha, ukugquma, kunye nokugquma. Imveliso entsha kolu thotho yi-LED405Med.
Ixesha leposi: Meyi-15-2024
