Cov Kev Lag Luam
Tus nqi-ua qauv ua lag luam ua qhov kev txhim kho ntawm cov thev naus laus zis, thiab kev lag luam LED tsis tuaj yeem ua yam tsis muaj cov qauv no. Cov kev siv hluav taws xob hauv LED qis tas li yog qhov ua kom paub, thiab cov khoom siv hluav taws xob thiab cov teeb hluav taws xob uas muaj hluav taws xob ntau dua, cov qauv ua kom muaj cua sov tsawg dua thiab cov nqi qis dua tau qhia. Cov khoom no tau coj kev nyuaj ntau hauv kev kho cua sov, thiab tib lub sijhawm, lawv tau coj nruj dua qub raws li cov teeb pom kev zoo ntawm cov kab teeb ci LED, tshwj xeeb hauv kev tiv thaiv sulfurization, tiv thaiv oxidation, thiab los tiv thaiv bromination.
Raws li peb txhua tus paub, qhov ci ntsa iab ntawm LED yog tshwm sim los ntawm qhov dub ntawm cov nyiaj-plated txheej.
Blackening tuaj yeem yog qhov tshwm sim uas tsis muaj leej faj, uas yog hais txog cov txheej txheem uas cov leej faj (S) nyob hauv ib puag ncig qhov ntsuas kub thiab vaum huab cua, qhov twg -2 leej faj thiab silver1 cov tshuaj lom neeg yuav ua rau daim ntawv Ag2 S;
Nws kuj tseem tuaj yeem yog qhov tshwm sim oxidation, uas yog hais txog cov txheej txheem hauv cov pa oxygen (O) nyob rau hauv ib puag ncig hauv qee qhov kub thiab ntsuas huab cua, qhov twg -2 cov pa oxygen thiab +1 lub cev muaj zog ua rau cov kua tshuaj lom tau tsim ua rau cov xim dub Ag2 O;
Nws tseem tuaj yeem yog qhov tshwm sim bromination, uas hais txog cov txheej txheem ntawm bromine (Br) keeb kwm nyob rau hauv ib puag ncig hauv qee qhov ntsuas kub thiab vaum huab cua, qhov twg -1 siab bromine thiab +1 valent silver tshuaj lom neeg cov tshuaj tiv thaiv los ua lub teeb dub AgBr.
Ntawm chav kawm, lwm 6A thiab 7A pawg pawg kuj tseem tuaj yeem sab hauv sab hauv ntawm cov txheej txheem teeb txawb teeb lub teeb, ua rau cov nyiaj plating txheej hloov xim thiab txo qhov ci ci ntawm cov LED teeb hlaws.
Yuav daws cov teeb meem dub dub li cas?
Yog li, qhov twg ua cov leej faj no, oxygen, bromine thiab lwm yam nkag rau sab hauv ntawm cov txheej ntawm LED teeb hlaws pob thiab hnov mob nrog cov nyiaj plating txheej? Nkag siab txoj kev nkag kis channel no yog qhov tseem ceeb rau peb los daws cov teebmeem ntawm blackening.
Txawm hais tias txhua yam ntawm cov channel tuaj yeem tiv thaiv zoo los ua tus yuam sij rau kev daws peb cov teeb meem.
Organic silicon thiab silicone resin (sau xa mus rau ntawm no yog silicone) feem ntau siv ua encapsulants rau LED teeb hlaws. Lawv muaj qee qhov ya raws thiab oxygen permeability, tshwj xeeb tshaj yog nyob rau hauv qhov chaw sov siab, muaj leej faj, oxygen, bromine thiab lwm yam yog yooj yim Ua rau cov kua silicone nkag mus rau hauv LED teeb hlaws pob.
1. Txoj kev siv los ntawm kev lag luam 1: pob silicone nyuaj
Tam sim no, feem ntau cov LED ntim khoom lag luam siv silica gel nrog lub siab tawv dua li cov khoom siv sib khi rau LED teeb hlaws, uas tuaj yeem ncua sijhawm lub sijhawm dub, tab sis kev ntxhov siab tshwm sim los ntawm silica gel nrog siab dua ua kom muaj kev cia siab ntawm cov qauv sab hauv ntawm LED. lub teeb hlaws teeb pob Kev sib deev txaus ntshai. Nyob rau hauv cov ntaub ntawv ntawm thermal nthuav thiab qhov nqes, qhov txuas ntawm cov xov hluav taws xob sab hauv lub teeb ci LED teeb lub ntsej muag tau yooj yim ua rau tsis ua haujlwm tsis ua haujlwm. Txawm li cas los xij, txawm tias muaj ntau dua qhov nyuaj ntawm silica gel, lub iav hloov qhov kub ntawm silica gel tsuas yog 50-70 ° C. Thaum muaj qhov kub siab, qhov sib txawv nruab nrab ntawm cov qauv molecular ntawm silica gel tau loj dua, thiab cov leej faj, oxygen, bromine thiab lwm yam muaj peev xwm yooj yim nkag mus rau hauv LED Sab hauv ntawm pob khoom nrog cov nyiaj plating txheej.
2. Cov txheej txheem siv hauv kev lag luam 2: Cov khoom siv roj organic teeb meem yog coated rau saum npoo ntawm silica gel
Yog li no, ntau lub tshuab ntim cov ntoo LED tseem siv softer silicone, txheej txheej txheej ntawm cov khoom siv roj organic teeb meem nyob rau saum npoo ntawm LED teeb hlaws pob, thaum ncua sijhawm tsaus nti, zam qhov kev ntxhov siab ntawm cov silicone nrog lub siab tawv.
Nws tsis yog qhov nyuaj kom pom tias ob txoj hauv kev los daws cov teeb meem dub los ntawm kev siv lub siab tawv encapsulant lossis saum npoo txheej ntawm cov khoom siv roj organic teeb meem tsuas yog txhim kho nyob rau hauv pem hauv ntej channel ntawm colloid (1), lwm txoj kev raws tseem tsis thaiv, leej faj, Oxygen, bromine thiab lwm yam khoom yooj yim nkag rau ntawm LED teeb hlaws pob, ob txoj hauv kev no tau txais txiaj ntsig tsis zoo. Dab tsi' s ntau dua, thaum coated rau saum npoo ntawm LED teeb hlaws, cov roj av organic txheej txheej yog yooj yim hnav hauv kev lag luam tom qab. Nyob rau tib lub sijhawm, cov khoom siv roj av organic teeb meem yog qhov tsis zoo thiab tawg vim tias cov molecular fission nyob hauv huab cua sov qhov chaw nyob ntev, thiab thaum kawg tsis muab kev tiv thaiv zoo.
3. Txoj kev siv rau hauv kev lag luam 3: nyiaj-plated txheej coated nrog cov khoom siv roj organic teeb meem
Vim tias tus qauv ntawm lub ncoo LED, cov kev thaiv ntawm (2) thiab (3) cov channel tau yooj yim heev, uas tseem yog cov teeb meem kev ntawm qhov kev lag luam ntim LED tam sim no. Nws nyuaj nyuaj los thaiv cov channel. Txhawm rau kom daws tau qhov teeb meem ntawm blackening, tsuas yog saum npoo ntawm nyiaj plating tuaj yeem tiv thaiv kom tiav. Qee qhov chaw cog ntoo hauv LED siv cov khoom siv roj av teeb meem nyob rau saum npoo ntawm cov nyiaj-plated txheej. Txawm hais tias cov kem tsis thaiv, cov leej faj, oxygen, bromine thiab lwm yam nkag rau hauv cov pob LED tsis tuaj yeem cuam tshuam nrog cov nyiaj-plated txheej.
Txawm li cas los xij, qhov tuab thiab zoo sib xws ntawm cov khoom siv roj organic teeb meem no nyuaj rau kev tswj hwm. Qhov tseem ceeb yog tias cov ntaub ntawv organic tau yooj yim degraded hauv qhov kub thiab txias rau lub sijhawm ntev, cov pa tsis haum molecular tshwm sim, thiab cov organic roj teeb txheej tawg. Thaum kawg, nws tsis tiv thaiv zoo.
Kev daws los ntawm SMART Semiconductor
Hongli Zhihui Pab Pawg' s lub tuam txhab muag khoom txhua lub tuam txhab Smart Semiconductor Co., Ltd. siv cov txheej txheem qib siab, tshwj xeeb, cov cuab yeej tshwj xeeb PPL los daws cov teeb meem dub, thiab tso cov tshuaj tsis haum rau ntawm txheej txheej-plated txheej. Cov. Cov tshuaj inorganic tau muaj qhov zoo tshaj plaws. , Ua tau zoo los tiv thaiv qhov tshuaj tiv thaiv ntawm leej faj, oxygen, bromine thiab lwm yam khoom nrog cov xim txheej nyiaj. Nyob rau tib lub sijhawm, nws muaj lub siab ntev thiab ruaj khov tshuaj lom neeg lub cev, muaj kev ua tau zoo hauv kev tiv thaiv corrosion thiab siab kub tsis kam, thiab ua tiav cov teeb meem dub ntxiv los ntawm sulfurization, oxidation, thiab bromination. Qhov ntsuas vulcanization ntawm cov khoom tsim los ntawm peb lub tuam txhab' s PPL thev naus laus zis ntawm qhov kub ntawm 110 ° C yog 40% siab dua li ntawm cov khoom lag luam zoo ib yam.
PPL thev naus laus zis tau rov ua kom lub neej ntev ntawm LED teeb hlaws. Cov LED teeb hlaws ntim tau ntim nrog PPA thiab PCT txhaj tshuaj txhaj tshuaj maus taus tuaj yeem ua tiav lub neej (L70) ntau dua 50,000 teev nyob rau hauv feem ntau siv. PPL thev naus laus zis yuav ci hauv kev thov ntau dua.
Lub Ib Hlis 2017, SMART Semiconductor' s PPL tsis-sulfur cov khoom daws tau tiav thawj cov khoom lag luam loj hauv Suav teb. Kev pib PPL non-vulcanization txheej txheem daws teeb meem tuaj yeem npog tag nrho ntawm SMD, SMC, thiab EMC cov khoom, thiab tuaj yeem daws qhov teeb meem vulcanization. Txog tam sim no, nws tau thov rau 3 qhov kev tsim ua tswv tsev.
Ntxiv rau, EMC3030 / 5050/7070 cov khoom lag luam tau siv ntau dua. Hauv cov teeb pom kev sab nraum zoov, tshwj xeeb tshaj yog EMC5050 khoom, lub teeb ua haujlwm ntawm 240LM / W tuaj yeem ua tiav ntawm 1W. Ua ke nrog kev siv tshuab PPL los tiv thaiv leej faj, SMC ntim khoom, kev ntseeg tau siab dua, SMC5050 / 7070 cov khoom lag luam yuav muaj kev loj hlob sai ntawm cov khoom lag luam sab nraum zoov. Cov. Nyob rau tib lub sijhawm, nws tseem yuav tau siv dav hauv cov khoom muaj zog, kev lag luam tsheb teeb pom kev zoo thiab lwm cov teb.