Intshayelelo
Kwesi sithuba sebhlog, siza kuxoxa ngezicwangciso eziliqili ezisebenzayo kunye nezona ndlela zilungileyo zokuthintela ukudodobala kwePCB eguquguqukayo, ngaloo ndlela ukhusela izixhobo zakho zombane kwiintsilelo ezinokubakho.
I-Delamination ngumba obaluleke kakhulu odla ngokubetha iibhodi zesekethe eziprintiweyo eziqinileyo (PCBs) ngexesha lobomi babo benkonzo.Lo mcimbi ubhekisa ekwahlukaneni kweeleya kwi-PCB, okukhokelela kunxibelelwano olubuthathaka kunye nokusilela kwecandelo.Njengomvelisi okanye umyili, kubalulekile ukuqonda oonobangela be-delamination kwaye uthathe amanyathelo okuthintela ukuqinisekisa uzinzo lwexesha elide kunye nokuthembeka kwePCB yakho.
I. Qonda delamination kwi PCB rigid-flex
I-Delamination ibangelwa yimiba eyahlukeneyo ngexesha lokuvelisa, ukudibanisa, kunye nokuphatha izigaba ze-PCB eziguquguqukayo.Uxinzelelo lwe-thermal, ukufunxa umswakama kunye nokukhethwa kwezinto ezingafanelekanga zizinto eziqhelekileyo ze-delamination.Ukuchonga nokuqonda ezi zizathu kubalulekile ekuphuhliseni iindlela zokuthintela ezisebenzayo.
1. Uxinzelelo lwe-thermal: I-Coefficient of thermal expansion (CTE) ukungalingani phakathi kwezinto ezahlukeneyo kunokukhokelela ekuxinzezeleni okugqithiseleyo ngexesha lokuhamba ngebhayisikili ye-thermal, ekhokelela kwi-delamination.Xa i-PCB ifumana utshintsho lobushushu, iileya ziyakhula kwaye zikhontrakthi ngamaxabiso ahlukeneyo, zidala uxinezeleko kwiibhondi phakathi kwazo.
2. Ukufunxwa kokufuma: I-PCB eguquguqukayo engqongqo ihlala ityhilekile kwindawo yokufuma ephezulu kwaye ifunxa lula ukufuma.Iimolekyuli zamanzi zinokungena kumphezulu webhodi ngokusebenzisa i-microcracks, i-voids, okanye ukuvuleka okungavalwanga kakuhle, okubangela ukwanda kwendawo, ukudumba, kwaye ekugqibeleni i-delamination.
3. Ukukhethwa kweMathiriyeli: Ukuqwalaselwa ngononophelo kweempawu eziphathekayo kubalulekile ekuthinteleni ukuchithwa.Kubalulekile ukukhetha i-laminate efanelekileyo, i-adhesive kunye nonyango lwangaphezulu ukubonelela ngokufunxa okuphantsi komswakama kunye nokuzinza okufanelekileyo kwe-thermal.
2. Amacebo okuthintela ukudelamination
Ngoku ukuba siyasiqonda isizathu, makhe sijonge amacebo abalulekileyo okuthintela ukudodobala kwePCB eqinileyo:
1. Iingqwalasela ezifanelekileyo zoyilo:
a) Nciphisa ubukhulu bobhedu:Ubuninzi bobhedu obugqithisileyo budala uxinzelelo olukhulu ngexesha lokuhamba ngebhayisikile eshushu.Ke ngoko, ukusebenzisa ubuncinci bobunzima bobhedu obufunekayo kwandisa ukuguquguquka kwePCB kwaye kunciphisa umngcipheko we-delamination.
b) Ubume bomaleko obulungelelanisiweyo:Zama ukusasazwa okufanayo kweeleya zobhedu ngaphakathi kweendawo eziqinileyo neziguquguqukayo zePCB.Ulungelelwaniso olufanelekileyo lunceda ukugcina i-symmetrical ukwanda kwe-thermal kunye nokucutha, ukunciphisa amandla okuba ne-delamination.
c) Unyamezelo oluLawulwayo:Phumeza ukunyamezela okulawulwayo kubungakanani bomngxunya, ngedayamitha kunye nobubanzi bomkhondo ukuqinisekisa ukuba uxinzelelo ngexesha lotshintsho lwe-thermal lusasazwa ngokulinganayo kuyo yonke i-PCB.
d) Iifillet kunye neefilthi:Iifillet zinciphisa amanqaku oxinzelelo, zinceda ukufezekisa iinguqu ezigudileyo zokugoba kunye nokunciphisa amandla e-delamination.
2. Ukukhethwa kwezinto:
a) IiLaminates zeTg eziphezulu:Khetha i-laminates ezinobushushu obuphezulu beglasi (Tg) njengoko zibonelela ngokuxhathisa ubushushu obungcono, ukunciphisa ukungahambelani kwe-CTE phakathi kwezinto, kunye nokunciphisa iinkqubo zokukhwela ibhayisekile ezishushu ezinobungozi.
b) Imathiriyeli ye-CTE ephantsi:Khetha imathiriyeli enamaxabiso aphantsi e-CTE ukunciphisa ukungafani kokwanda kwe-thermal phakathi kweeleya ezahlukeneyo, ngaloo ndlela unciphisa uxinzelelo kunye nokuphucula ukuthembeka okupheleleyo kwee-PCB eziguquguqukayo.
c) Izinto ezikhusela ukufuma:Khetha izixhobo ezinokufunxa ukufuma okuphantsi ukunciphisa umngcipheko wokufunxa ngenxa yokufunxa ukufuma.Cinga ukusebenzisa iingubo ezikhethekileyo okanye izitywini ukukhusela iindawo ezisesichengeni zePCB ekungeneni kokufuma.
3. IiNdlela zokuVelisa ezomeleleyo:
a) Ukuphazamiseka okuLawulwayo:Phumeza inkqubo yokwenziwa kwe-impedance elawulwayo yokunciphisa utshintsho loxinzelelo kwi-PCB ngexesha lokusebenza, ngaloo ndlela unciphisa umngcipheko wokuphazamiseka.
b) UGcino noPhatho olululo:Gcina kwaye uphathe ii-PCB kwindawo elawulwayo kunye nokufuma okulawulwayo ukunqanda ukufunxwa kokufuma kunye nemiba enxulumene nokudodobala.
c) Uvavanyo kunye noHlolo:Uvavanyo olungqongqo kunye neenkqubo zokuhlola ziyenziwa ukuchonga naziphi na iziphene ezinokubakhona kwimveliso ezinokuthi zibangele i-delamination.Ukuphumeza iindlela zovavanyo ezingonakalisiyo ezinje ngebhayisekile eshushu, i-microsectioning, kunye nokuskena i-acoustic microscopy inokunceda ekubhaqeni i-delaminations efihliweyo kwangoko.
Ukuqukumbela
Ukuthintela i-delamination ye-PCBs eguquguqukayo engqongqo kubalulekile ekuqinisekiseni ixesha elide kunye nokusebenza okuthembekileyo.Ungawunciphisa umngcipheko we-delamination ngokuqonda oonobangela kunye nokuthatha amanyathelo okhuseleko afanelekileyo ngexesha loyilo, ukukhetha izinto eziphathekayo, kunye nokuveliswa.Ukuphumeza ulawulo olululo lwe-thermal, ukusebenzisa izixhobo ezineepropati ezifanelekileyo, ukusebenzisa iindlela zokuvelisa ezomeleleyo, kunye nokuqhuba uvavanyo olucokisekileyo kunokuphucula kakhulu umgangatho kunye nokuthembeka kwee-PCB eziguquguqukayo.Ngokulandela la maqhinga kunye nokuhlala usexesheni kwinkqubela phambili yamva nje yemathiriyeli kunye nobugcisa bokwenza, unokuqinisekisa uphuhliso oluyimpumelelo lweePCBs ezizinzileyo nezithembekileyo ezinegalelo kuzinzo kunye nemfezeko yezixhobo zakho zombane.
Ixesha lokuposa: Sep-20-2023
Emva