Raws li tus neeg nqa khoom tseem ceeb ntawm cov tshuab hluav taws xob, kev siv tshuab thev naus laus zis ntawm Circuit Boards yog qhov tseem ceeb.Copper paste circuit boards, nrog rau lawv cov khoom siv tshwj xeeb thiab cov txheej txheem tsim khoom, tau maj mam tshwm sim los ua lub zog tawm tshiab hauv kev tsim hluav taws xob. Nws muab txoj hauv kev tshiab los daws cov teeb meem hauv kev tsim khoom siv hluav taws xob ib txwm muaj, ua kom pom qhov zoo ntawm kev txhim kho Circuit Court board kev ua tau zoo thiab txhim kho cov txheej txheem ntau lawm.
1, Lub hauv paus ntsiab lus thiab muaj pes tsawg leeg ntawm tooj liab paste Circuit Court board
Lub hauv paus ntawm tooj liab paste circuit boards yog nyob rau hauv cov khoom tseem ceeb ntawm tooj liab muab tshuaj txhuam. Copper paste feem ntau yog ua los ntawm kev sib xyaw siab -purity tooj liab hmoov nrog cov organic binders, additives, thiab lwm yam. Ntawm lawv, tooj liab hmoov, raws li lub cev conductive, plays lub luag hauj lwm tseem ceeb nyob rau hauv conducting tam sim no nyob rau hauv Circuit Court boards vim nws zoo heev conductivity. Organic binders ua lub luag haujlwm hauv kev sib cais ntawm cov hmoov tooj liab thiab ua rau nws mus rau hauv lub substrate, kom ntseeg tau tias cov khoom siv tooj liab tuaj yeem ruaj khov nyob rau hauv txoj hauj lwm predetermined thaum lub sij hawm tom qab ua thiab siv, tsim kev txhim khu kev qha conductive kab. Muaj ntau hom tshuaj ntxiv, suav nrog cov tshuaj rheology, tshuaj tua kab mob antioxidant, thiab lwm yam, uas yog siv los kho cov dej ntws ntawm tooj liab, tiv thaiv cov hmoov tooj liab los ntawm oxidizing thaum npaj thiab siv, thiab ua kom zoo thiab ua haujlwm ruaj khov ntawm tooj liab muab tshuaj.
Los ntawm qhov kev xav ntawm muaj pes tsawg leeg, tooj liab paste Circuit Court boards yog raws li nyob rau hauv substrates, thiab cov khoom siv substrate muaj xws li ceramic substrates, FR4, thiab lwm yam. Piv txwv li, ceramic substrates muaj qhov kub thiab txias tsis kam thiab kev ua haujlwm siab rwb thaiv tsev, ua rau lawv tsim nyog rau cov khoom siv hluav taws xob nrog cov kev cai nruj rau cov cua sov dissipation thiab hluav taws xob ua haujlwm; FR4 substrate yog dav siv nyob rau hauv cov neeg siv khoom siv hluav taws xob thiab lwm yam kev lag luam vim nws cov nqi qis thiab kev ua haujlwm loj. Nyob rau hauv substrate, tooj liab muab tshuaj txhuam yog luam tawm ntawm predetermined txoj hauj lwm los ntawm cov txheej txheem luam ntawv tshwj xeeb los tsim cov qauv Circuit Court. Cov qauv no tau ua tiav tom qab xws li ziab thiab sintering kom evaporate los yog solidify cov organic Cheebtsam nyob rau hauv cov tooj liab muab tshuaj txhuam, thiab tooj liab hmoov sinter ua ke los tsim ib tug nruj conductive txoj kev, yog li tsim ib tug ua tiav Circuit Court board conductive system.
2, Kev tsim cov txheej txheem ntawm tooj liab paste Circuit Court board
(1) Kev npaj ntawm tooj liab muab tshuaj txhuam
Kev npaj siab - zoo tooj liab muab tshuaj yog thawj kauj ruam hauv kev ua tooj liab muab tshuaj txhuam Circuit Court boards. Ua ntej, siab -purity tooj liab hmoov yog xaiv, uas feem ntau yuav tsum tau siab tshaj 99% purity kom ntseeg tau zoo conductivity. Qhov loj me me thiab kev faib tawm ntawm cov hmoov tooj liab muaj qhov cuam tshuam loj rau cov khoom ntawm tooj liab muab tshuaj txhuam. Generally, copper powder with particle sizes ranging from 1-50 μ m is selected according to specific application requirements, and different particle sizes of copper powder are mixed in a certain proportion through specific processes to optimize the bulk density and conductivity of copper paste.
(2) Txheej txheem luam ntawv
Kev luam ntawv yog ib kauj ruam tseem ceeb hauv kev xa cov tooj liab muab tshuaj txhuam rau hauv lub substrate los tsim cov qauv hauv Circuit Court. Cov txheej txheem luam ntawv feem ntau suav nrog kev tshuaj ntsuam luam ntawv thiab scraper txheej luam ntawv. Kev tshuaj ntsuam luam ntawv yog ib txoj hauv kev, uas suav nrog kev ua lub vijtsam luam ntawv phaj nrog cov qauv hauv Circuit Court, muab tooj liab muab tshuaj txhuam rau ntawm qhov screen, thiab siv lub siab ntawm lub vijtsam siv lub scraper los hloov cov tooj liab los ntawm qhov qhib qhov chaw ntawm lub vijtsam mus rau qhov chaw ntawm lub substrate, yog li tsim cov tooj liab paste Circuit Court qauv raws li cov qauv ntawm lub vijtsam. Nyob rau hauv cov txheej txheem ntawm kev tshuaj ntsuam luam ntawv, tsis xws li mesh loj ntawm lub vijtsam, lub hardness thiab siab ntawm lub scraper, thiab cov luam ntawv ceev tuaj yeem cuam tshuam qhov zoo ntawm tooj liab paste luam ntawv, xws li kab clarity thiab thickness uniformity.
(3) Qhuav thiab sintering
Tom qab luam ntawv, tooj liab muab tshuaj txhuam Circuit Court board yuav tsum tau qhuav kom tshem tawm cov khoom volatile xws li ya raws thiab qee cov kuab tshuaj organic. Muaj ntau txoj hauv kev kom qhuav, feem ntau suav nrog kev siv qhov cub, infrared dryers, lossis microwave dryers. Cov txheej txheem ziab kom qhuav yuav tsum tswj xyuas qhov kub thiab lub sijhawm kom ntseeg tau tias cov tshuaj tsis haum tshuaj raug tshem tawm tag nrho yam tsis muaj kev cuam tshuam rau kev ua haujlwm adhesion ntawm tooj liab paste thiab substrate, nrog rau cov qauv sab hauv ntawm cov tooj liab muab tshuaj txhuam.
3, Kev ua tau zoo ntawm tooj liab paste Circuit Court boards
(1) Kev ua tau zoo conductivity
tooj liab nws tus kheej yog ib tug hlau nrog zoo heev conductivity, qeb ntawm cov saum toj kawg nkaus nyob rau hauv cov nqe lus ntawm hluav taws xob conductivity ntawm cov hlau. Nyob rau hauv tooj liab paste Circuit Court boards, cov kab hluav taws xob tsim los ntawm tooj liab muab tshuaj txhuam uas tau muab faib ua kom zoo thiab ua tiav tuaj yeem txo qhov tsis kam thiab txhim kho kev sib kis tam sim no. Piv nrog rau cov txheej txheem kev tsim hluav taws xob ib txwm muaj xws li etching, tooj liab muab tshuaj txhuam Circuit Court boards muaj txiaj ntsig zoo hauv kev coj ua. Etching txoj kev yuav inevitably ua rau tej yam kev puas tsuaj rau saum npoo ntawm cov ntawv ci tooj liab khaws cia thaum lub sij hawm tus txheej txheem ntawm tshem tawm ntau tshaj tooj liab ntawv ci, ua kom muaj zog; Cov tooj liab paste Circuit Court board ua cov kab hluav taws xob los ntawm kev luam ntawv ncaj qha thiab sintering, txo qhov kev puas tsuaj no thiab ua rau cov kab hluav taws xob ntawm cov kab hluav taws xob ze dua rau cov khoom siv hluav taws xob ntawm tooj liab. Piv txwv li, tooj liab paste circuit boards npaj siv cov txheej txheem tshwj xeeb tuaj yeem muaj qhov tsis zoo ntawm cov txheej txheem hluav taws xob tsawg li 2.26 × 10 ⁸ω / m (ntshiab tooj liab muaj qhov tiv taus ntawm 1.75 × 10 ⁻⁸ω / m), uas tuaj yeem ua tau raws li qhov yuav tsum tau muaj rau kev siv hluav taws xob hauv cov ntaub ntawv siv hluav taws xob siab {8} thiab cov ntaub ntawv ceev high- zaus circuits.
(2) Kev ua haujlwm zoo thaum tshav kub kub dissipation
Thaum lub sijhawm ua haujlwm ntawm cov khoom siv hluav taws xob, hluav taws xob tsim hluav taws xob yog ib qho teeb meem tshwm sim, tshwj xeeb tshaj yog nyob rau hauv siab - zog, siab - ceev integrated electronic systems. Lub tshav kub dissipation kev ua tau zoo ncaj qha cuam tshuam rau kev ruaj ntseg thiab kev pab cuam lub neej ntawm cov khoom siv. Tooj liab muaj cov thermal conductivity zoo, thiab cov tooj liab muab tshuaj txhuam cov kab hauv cov tooj liab paste Circuit Court boards tuaj yeem hloov cov cua sov los ntawm cov khoom siv hluav taws xob thaum ua haujlwm tam sim no. Rau qee lub rooj tsav xwm hauv Circuit Court uas siv tooj liab muab tshuaj los ntawm- qhov los yog tooj liab muab tshuaj txhuam plug qhov tshuab, cua sov tuaj yeem ua sai sai rau lwm cov khaubncaws sab nraud povtseg lossis cov khoom siv hluav taws xob cua sov ntawm lub rooj tsavxwm los ntawm cov tooj liab muab tso rau hauv qhov, zoo heev txhim kho tag nrho cov tshav kub dissipation efficiency ntawm lub rooj tsavxwm. Nyob rau hauv lub rooj tsav xwm Circuit Court ntawm siab - lub zog LED teeb pom kev zoo, cov txheej txheem tooj liab muab tshuaj txhuam qhov ua kom zoo dua qhov chaw thermal conductivity. Tus ncej tooj liab tuaj yeem hloov cov cua sov mus rau sab nraud ntawm lub rooj tsavxwm. Ua ke nrog cov thermal conductivity tooj liab muab tshuaj txhuam (thermal conductivity coefficient ntawm 8w / mk), nws tuaj yeem txo qhov kev khiav hauj lwm kub ntawm LED chips, ncua kev pab cuam lub neej ntawm lub fixture, thiab txhim kho luminous efficiency.
(3) Cov qauv tsim muaj zog dua
Nyob rau hauv cov txheej txheem ntawm tooj liab paste Circuit Court boards, tom qab sintering, tooj liab muab tshuaj txhuam ua ib tug muaj zog daim ntawv cog lus ntawm tooj liab hmoov hais, tsim ib tug conductive qauv nrog ib tug tej yam lub zog ntawm lub substrate. Rau Circuit Court boards siv tooj liab paste los ntawm - qhov los yog plug qhov tshuab, tom qab cov tooj liab muab tshuaj txhuam nyob rau hauv lub los ntawm - qhov solidifies, nws zoo li lub tsev steel tuav nyob rau hauv lub Circuit Court board, ho txhim khu lub mechanical zog xws li khoov tsis kam thiab kev co kuj ntawm lub Circuit Court board. Qhov kev ua tau zoo dua qub no ua rau cov tooj liab muab tshuaj txhuam rau hauv Circuit Court boards kom zoo dua rau kev siv ib puag ncig, tswj kev ncaj ncees thiab kev ruaj ntseg txawm tias nyob rau hauv qee qhov kev cuam tshuam sab nraud, thiab txo qhov kev ua tsis tiav los ntawm kev puas tsuaj. Hauv qee qhov chaw xws li cov cuab yeej tswj kev lag luam thiab cov khoom siv hluav taws xob hauv tsheb, cov khoom siv yuav raug rau sab nraud quab yuam xws li kev vibration thiab cuam tshuam thaum ua haujlwm. Copper paste circuit boards, nrog rau lawv cov qauv zoo, tuaj yeem ua haujlwm tau zoo los xyuas kom meej tias cov khoom siv ua haujlwm ib txwm muaj.
(4) Ib puag ncig zoo
Cov txheej txheem kev tsim khoom siv hluav taws xob niaj hnub, xws li etching, tsim kom muaj ntau cov kua khib nyiab, uas muaj cov tooj liab ions ntau thiab cov kua qaub corrosive. Kev tshaj tawm -kev kho mob nyuaj thiab muaj kev cuam tshuam loj rau ib puag ncig thiab tib neeg kev noj qab haus huv. Cov txheej txheem ntawm tooj liab paste Circuit Court boards yog ib puag ncig tus phooj ywg. Thaum lub sij hawm kev npaj thiab luam ntawv ntawm tooj liab muab tshuaj txhuam, tsis tas yuav siv ntau cov tshuaj phem, thiab cov khoom pov tseg thaum lub sij hawm tsim khoom yog me me. Nyob rau tib lub sijhawm, kev siv cov thev naus laus zis thev naus laus zis thev naus laus zis tuaj yeem tshem tawm kev siv dav siv los tiv thaiv - oxidation compounds, zam dhau cov khoom siv ua kuab paug, thiab tag nrho txo qhov tsis zoo ntawm ib puag ncig, uas ua tau raws li kev tsim kho ntawm kev lag luam hluav taws xob niaj hnub tsim kev lag luam rau ntsuab thiab kev tiv thaiv ib puag ncig.