Qhov xwm txheej tam sim no thiab kev txhim kho tiam sis ntawm cov ntawv yob tooj liab
Copper foil yog ib yam khoom tseem ceeb tseem ceeb rau kev ua cov ntawv luam tawm Circuit Board (PCB), tooj liab-clad laminates (CCL) thiab lithium-ion roj teeb. Cov ntawv ci tooj liab tuaj yeem muab faib ua ob pawg: dov tooj liab ntawv ci thiab electrolytic tooj liab ntawv ci raws li nws cov txheej txheem tsim khoom.
Electrolytic copper foil yog tsim los ntawm tooj liab electrolysis siv cov txheej txheem electrochemical. Cov qauv sab hauv ntawm cov ntawv ci nyoos yog ib txoj kab ntsug zoo li cov qauv siv lead ua, thiab nws cov nqi tsim khoom kuj tsawg. Rolled tooj liab ntawv ci yog tsim los ntawm kev siv lub hauv paus ntsiab lus ntawm cov yas ua los ntawm kev rov dov thiab annealing txheej txheem ntawm tooj liab ingots. Nws cov qauv sab hauv yog cov qauv flaky crystalline, thiab dov tooj liab ntawv ci khoom muaj ductility zoo. Nyob rau theem no, electrolytic tooj liab ntawv ci yog tsuas yog siv nyob rau hauv zus tau tej cov rigid Circuit Court boards, thaum dov tooj liab ntawv ci yog tsuas yog siv nyob rau hauv saj zawg zog thiab high-frequency Circuit Court boards.
1. Cov yam ntxwv ntawm dov tooj liab ntawv ci
Piv nrog electrolytic tooj liab ntawv ci, dov tooj liab ntawv ci muaj cov yam ntxwv hauv qab no.
1.1 Cov txheej txheem ntau lawm yog complex thiab cov nqi ntau lawm yog siab
Cov txheej txheem ntau lawm ntawm cov ntawv ci tooj liab (cathode tooj liab smelting - casting - cua sov - kub dov - milling - txias ntxhib dov - annealing - pickling - txias xov dov - annealing - shearing - ntawv ci dov - nto kho - shearing) piv Cov txheej txheem ntau lawm ntawm electrolytic tooj liab ntawv ci (tooj liab melting - electrolytic ntawv ci - kho nto - shearing) yog ntau nyuaj. Muaj ntau yam uas cuam tshuam rau cov khoom zoo thiab cov txiaj ntsig ntawm dov tooj liab ntawv ci. Yog li ntawd, kev tsim cov ntawv yob tooj liab yog qhov nyuaj thiab nyuaj rau tsim. tus nqi siab dua.
1.2 Lub thickness thiab dav ntawm cov ntawv ci tooj liab yuav raug txwv
Rolled tooj liab ntawv ci yog tsim los ntawm rov dov tooj liab ingots. Vim nws txoj kev ua, tshwj xeeb tshaj yog cov kev txwv ntawm tooj liab ntawv rolling tshuab, nws thickness thiab dav yuav raug rau tej yam kev txwv. Tam sim no ua lag luam ua cov ntawv yob tooj liab muaj qhov txwv thickness ntawm ntau tshaj 6 μm thiab txwv dav ntawm tsawg dua 800 hli. 1.3 High purity, siab yoog raws thiab qis nto roughness
Vim yog txoj kev tsim khoom sib txawv ntawm cov ntawv ci tooj liab thiab electrolytic tooj liab ntawv ci, purity ntawm dov tooj liab ntawv ci tuaj yeem ncav cuag 99.9%, uas siab dua 99.8% ntawm electrolytic tooj liab ntawv ci.
Piv nrog rau cov qauv siv lead ua flaky ntawm dov tooj liab ntawv nyiaj thiab ntsug koob zoo li crystalline lub xeev ntawm electrolytic tooj liab ntawv ci, qhov khoov tsis kam ntawm cov ntawv ci zoo tib yam dov tooj liab yog ntau tshaj li ob npaug ntawm cov qauv electrolytic tooj liab ntawv ci nyob rau hauv tib lub specifications; thiab vim muaj qhov sib txawv loj ntawm qhov roughness ntawm matte nto thiab roughness ntawm du nto. Lub flexural kuj ntawm tus qauv electrolytic tooj liab ntawv ci kuj txawv heev nyob rau hauv sib txawv dabtsi yog khoov cov lus qhia, thaum qhov sib txawv nyob rau hauv lub flexural tsis kam ntawm dov tooj liab ntawv me me. Cov txheej txheem ntau lawm ntawm dov tooj liab ntawv txiav txim siab nws cov smoothness nyob rau saum npoo. Feem ntau hais lus, qhov nto roughness (Rz) ntawm dov tooj liab ntawv ci tuaj yeem ncav cuag 1μm, uas yog ib feem tsib ntawm qhov roughness ntawm tus qauv electrolytic copper foil raw foil. Vim yog cov nyhuv ntawm daim tawv nqaij, nyob rau hauv tus txheej txheem ntawm high-frequency charge kis tau tus mob, cov khoom hluav taws xob ntawm dov tooj liab ntawv ci nrog me roughness yog zoo dua li cov electrolytic tooj liab ntawv ci nrog loj roughness. Kev sib piv ntawm cov khoom tseem ceeb ntawm dov tooj liab ntawv ci thiab electrolytic tooj liab ntawv ci yog qhia nyob rau hauv Table 1. Table 2 qhia qhov ntsuas qhov tseem ceeb ntawm cov yam ntxwv tseem ceeb ntawm electrolytic copper foil thiab dov tooj liab ntawv ci.
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1.4 Yooj yim txhais tau tias txhim kho kev ua tau zoo thiab tsim cov khoom tshiab
Electrolytic tooj liab ntawv ci yog tsim los ntawm tooj liab electrolysis. Yog tias koj xav txhim kho kev ua haujlwm ntawm electrolytic tooj liab ntawv ci los yog tsim cov khoom tshiab, koj tsuas tuaj yeem ua tiav nws los ntawm kev kho cov txheej txheem ntawm electrolytic copper foil electrolysis. Lub dov tooj liab ntawv ci yog tsim los ntawm cov tsoos sawb los ntawm kev rov ua dua dov thiab cov txheej txheem annealing. Nws tuaj yeem ua haujlwm los ntawm micro-alloying ntawm cov khoom siv sawb, tswj cov txheej txheem ntawm cov ntawv ci tooj liab, thiab kho cov txheej txheem annealing. , kom tau txais cov ntawv ci tooj liab nrog cov kev ua tau zoo sib txawv xws li lub zog siab, siab yooj, siab elongation thiab siab softening kub.
2. Cov xwm txheej tam sim no thiab kev txhim kho cov qauv ntawm cov ntawv yob tooj liab
Tam sim no, ntau tshaj 90% ntawm lub ntiaj teb no dov tooj liab ntawv ci muaj peev xwm yog nyob rau hauv txhais tes ntawm Japanese manufacturers, saib Table 3; thiab ntau dua 80% ntawm cov neeg tsim khoom Nyij Pooj lub peev xwm ntau lawm yog concentrated nyob rau hauv Nyiv, saib Table 4. Vim hais tias lub peev xwm ntawm dov tooj liab ntawv ci yog heev concentrated thiab cov nqi ntau lawm yog siab, nws cov zis thiab tus nqi yog heev uncertain. Txhawm rau txo cov nqi thiab zam cov khoom siv raw khoom txaus ntshai, feem ntau kev lag luam xws li cov ntawv luam tawm Circuit Court boards thiab lithium roj teeb tam sim no yuav tsum tau siv electrolytic tooj liab ntawv ci los hloov dov tooj liab ntawv ci, thiab qhov no tau txhawb nqa electrolytic tooj liab ntawv ci manufacturers los nqis peev hauv high-ductility electrolytic. tooj liab ntawv nyiaj thiab low-profile electrolytic tooj liab. Muaj kev nce qib hauv kev txhim kho tshwj xeeb electrolytic tooj liab foils xws li foils. Txawm li cas los xij, vim nws txoj kev tsim khoom, nws yooj yim, nto roughness thiab lwm yam khoom tseem tsis tau muab piv rau cov ntawv ci tooj liab.
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Vim hais tias tus nqi ntawm cov ntawv nyiaj dov tooj liab yog siab, dov tooj liab ntawv ci yog tam sim no tsuas yog siv nyob rau hauv kev lag luam yooj yooj yim Circuit Court board kev lag luam uas yuav tsum tau siab foil yooj thiab nto roughness, high-kev ua tau zoo lithium hluav taws xob roj teeb, thiab tej qhov chaw uas yuav tsum tau high-frequency teeb liab kis tau tus mob. Hauv kev lag luam PCB, kev hloov pauv thiab kev loj hlob ntawm kev thov rau dov tooj liab ntawv ci yog ze rau kev txhim kho ntawm cov kev lag luam no. Flexible circuit board yog ib lub tshuab luam ntawv uas muaj kev ntseeg siab thiab kev ua haujlwm siab ua los ntawm polyester zaj duab xis los yog polyimide ua cov khoom siv hauv paus thiab etched rau cov kab ntawm cov ntawv ci tooj liab. Hom kab hluav taws xob no muaj cov yam ntxwv ntawm cov kab hluav taws xob siab ceev, nyias nyias, lub teeb yuag, qhov chaw sib txuas tsawg tsawg, foldability, siab yooj, thiab muaj peev xwm txav mus los thiab nthuav dav hauv qhov chaw peb sab kom ua tiav kev sib koom ua ke ntawm cov khoom sib dhos thiab kev sib txuas ntawm cov hlau. . thiab lwm yam yam ntxwv, uas yog raws li txoj kev loj hlob ntawm cov khoom siv hluav taws xob mus rau lightness, thinness, thiab miniaturization.
Nrog rau txoj kev loj hlob ntawm cov khoom siv hluav taws xob nyob rau hauv cov kev taw qhia ntawm lightness, thinness thiab miniaturization, cov khoom siv hluav taws xob yuav tsum tau ua ntau thiab ntau, yuav tsum tau ntau thiab ntau qhov chaw. Cov kev xav tau rau qhov ceev ntawm kev sib tshuam thiab kev teeb tsa ntawm cov khoom siv hluav taws xob tau txais ntau dua thiab siab dua. Nyob rau ntawm lub rooj tsavxwm luam tawm Qhov kev sib cuag ntawm cov khoom siv hauv Circuit Court yog shrinking, uas yuav tsum tau siv cov khoom siv high-density thaiv thiab microvia technology kom ua tiav lub hom phiaj. Lub thinner cov ntawv ci tooj liab, qhov yooj yim dua nws yog kom tsis txhob luv luv hauv micro circuits vim "sab yaig" thiab ua kom tiav micro-aperture drilling, yog li ua kom muaj kev ntseeg siab ntawm cov ntawv luam tawm Circuit Board.
Piv nrog rau lwm cov roj teeb uas ua tau zoo, cov roj teeb lithium hluav taws xob muaj qhov zoo ntawm lub zog tshwj xeeb, tsis muaj kev nco, lub neej ntev, tsis muaj kuab paug, me me thiab lub teeb yuag, thiab tau dhau los ua lub zog nyiam rau cov khoom siv hluav taws xob portable. Daim ntawv thov ntawm dov tooj liab ntawv ci nyob rau hauv high-performance lithium roj teeb kev lag luam (tshwj xeeb tshaj yog nyob rau hauv dov roj teeb) yog maj mam nthuav vim nws tsis tshua muaj nto roughness thiab zoo ductility tom qab tshav kub kho, uas yog haum rau roj teeb txheej txheem. Nyob rau hauv high-frequency teeb liab kis tau tus mob, vim "tawv nqaij nyhuv", cov cim qhia ntawm lub Circuit Court board yuav tsub zuj zuj nyob rau saum npoo ntawm tus neeg xyuas pib. Yog li ntawd, tooj liab ntawv ci yog ib qho tseem ceeb ntawm cov txheej txheem ntawm cov ntawv luam tawm Circuit Board substrate, thiab nws qhov roughness ntawm qhov chaw ua lub luag haujlwm tseem ceeb hauv kev xa cov teeb liab poob. Kev cuam tshuam yog qhov tseem ceeb heev (ntawm qhov siab zaus, qhov siab dua qhov roughness, qhov ntau dua qhov teeb liab kis tau tus mob). Txhawm rau txo qis kev sib kis ntawm cov teeb liab ntau zaus, nws yog ib qho tsim nyog yuav tsum tau siv qis profile (Rz: 2.7 ~ 3.3μm) los yog du nto tooj liab ntawv ci (Rz: Tsawg dua lossis sib npaug li 1.7μm). Txhawm rau hloov mus rau txoj kev loj hlob sai ntawm cov ntaub ntawv network technology thiab cov kev xav tau ntau dua rau kev ceev thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob ua cov ntaub ntawv, qhov tsawg profile ntawm cov ntawv ci tooj liab yog ua kom cov teeb liab kis ceev ntawm cov ntawv luam tawm hauv substrate thiab txo. lub teeb liab poob thaum xa cov teeb liab siab ceev. tseem ceeb txhais tau tias ntawm attenuation.
Nyob rau hauv xyoo tas los no, txhawm rau hloov kho cov kev xav tau ntawm cov khoom siv hluav taws xob, kev tsim cov ntaub ntawv tshiab ntawm cov ntaub ntawv tooj liab tau ua tiav qee yam. Piv txwv li: ultra-low ntxhib nto dov tooj liab ntawv ci yog tsim los ntawm kev hloov cov txheej txheem dov, nrog rau qhov roughness (Rz) txog li 0.4 μm, uas yog tsim nyog rau kev sib kis ntawm high-frequency. cov cim; tsim los ntawm kev sib txuas ua ke sib txawv dov txheej txheem nrog annealing Ib dov tooj liab ntawv ci nrog lub cubic recrystallized qauv tau tsim. Tom qab kev sim, nws cov flexural tsis kam yog ntau tshaj 4 npaug ntawm cov khoom siv tooj liab zoo tib yam. Cov khoom siv hluav taws xob hloov pauv tau tsim muaj kev ntseeg siab dua flexural; los ntawm micro-alloying cov dov tooj liab ntawv tshuaj tshuaj kho mob los txhim kho lub zog txhua yam thiab elasticity ntawm cov ntawv ci tooj liab kom hloov mus rau cov txheej txheem tsim khoom thiab cov kev xav tau ntawm cov khoom sib txawv ntawm cov tooj liab-clad laminates.
3. Cov lus xaus
(1) High purity, siab yooj, tsis tshua muaj nto roughness, thiab saj zawg zog txhais tau tias ntawm kev txhim kho cov khoom ua tau zoo los yog tsim cov khoom tshiab yog cov yam ntxwv tseem ceeb ntawm dov tooj liab ntawv ci.
(2) Cov txheej txheem ntau lawm, cov nqi tsim khoom siab, thiab ntau dhau ntawm cov peev txheej ntau lawm yog qhov tseem ceeb rau kev tsim cov ntawv ci tooj liab; txo cov nqi tsim khoom thiab rhuav tshem kev lag luam monopoly yog cov ntsiab lus tseem ceeb los txhim kho kev lag luam kev sib tw ntawm cov ntawv ci tooj liab.
(3) Kev thauj mus los ntawm cov khoom siv hluav taws xob, kev txhim kho thiab kev siv dav dav ntawm cov teeb liab xaim hluav taws xob ntau, cov kev xav tau ntawm high-density interconnection electronic installation technology, thiab kev loj hlob sai ntawm lithium roj teeb kev lag luam txiav txim siab tias dov tooj liab ntawv ci yuav ntxiv mus ua ib tug muaj zog sib tw rau electrolytic tooj liab ntawv ci nyob rau hauv lub neej yav tom ntej tus nrog sib ntaus.
