Abakhiqizi bebhodi lesifunda le-Pcb elinezingqimba eziningi banethimba lochwepheshe lokucwaninga nokuthuthukiswa kwezobuchwepheshe, banolwazi olunzulu lwenqubo yobuchwepheshe bemboni, futhi banezindawo zokukhiqiza ezinokwethenjelwa, izindawo zokuhlola kanye namalabhorethri angokwenyama namakhemikhali anazo zonke izinhlobo zemisebenzi.I-FR-4 esikhuluma ngayo lapha iwuhlobo lweshidi oluvame ukusetshenziswa kakhulu ekukhiqizeni amabhodi wesekethe we-pcb multilayer.
Okukha phezulu kakhulu, i-copper clad laminate esetshenziswa kakhulu kanye ne-prepreg emhlabeni wonke i-NEMA ebizwa nge-FR4
cishe 14% of the okukhipha ingqikithi kuyinto single-emaceleni noma kabili emaceleni FR-4 ibhodi, futhi asele mayelana 40% webhodi multi-ungqimba mncane FR -4 laminates.Ukuphela komlando kokubusa kwe-FR-4's emakethe ngokuyinhloko kubangelwa ukuthi idlula kakhulu ama-laminates asekelwe ephepheni ezindaweni ezishisayo, umswakama othuthukisiwe nokumelana namakhemikhali, amandla aphezulu okuguquguquka kanye namandla amahle we-peel..I-FR4 i-laminate yokuqala engasetshenziselwa amaphaneli anezinhlangothi ezimbili entwasahlobo-ngembobo ngenxa yokumelana nomswakama kanye nokukhipha amakhemikhali.Futhi, inani lemali le-FR-4 alinakuhlulwa.Ngokuhamba kweminyaka, imboni icabange ukuthi i-FR-4 izovumela izinto ezisanda kuthuthukiswa ze-laminate ezifanele ukuminyana okuphezulu komhlangano.Kodwa-ke, ngenxa yezindleko zezindleko, abaklami bebhodi lesifunda basafuna izindlela zokusebenzisa i-FR-4 emihlanganweni ephakeme kakhulu.
Izinto eziqinisayo ezisetshenziselwa i-FR4 laminates i-electronic glass Wib (E-glass).Ngenxa yezakhiwo zayo ezinhle kakhulu zemishini, izakhiwo zokufaka ugesi ezanelisayo, ukumelana nokushisa, ukumelana nomswakama kanye nokumelana ne-asidi, indwangu ye-E-type fiber fiber isiyinto enhle kakhulu yokuqinisa ugesi.Zonke izindwangu ezisetshenziswa ku-FR4 zinesakhiwo esingaphezulu esibushelelezi ngokwendlela yokweluka ubhasikidi, futhi indawo engaphezulu imbozwe ungqimba lukapende ukuze kuqiniswe ukuhlangana phakathi kwemicu yengilazi nezinhlaka zemvelo.Ngesikhathi senqubo yokweluka, ubukhulu kanye nenani lemicu yengilazi kunqunywa.Isisindo esiyisisekelo kanye nokuqina kwendwangu eqediwe kunqunywa, ubukhulu bendwangu yengilazi ye-fiber esetshenziselwa ibhodi eliphrintiwe iningi lisuka ku-6 kuya ku-172m, futhi i-prepreg eyakhiwe ngendwangu ye-glass fiber inquma ubukhulu be-laminate.Ngokuvamile, ukujiya kwe-FR4 laminate kungu-bam~1L57mm (kukhuphuka ngezikhathi ezithile ngo-25pm), futhi ukujiya okuqondile kuncike ohlotsheni lwendwangu yengilazi yefibre kanye nokuqukethwe kwe-resin yemvelo yeshidi elingamakhemikhali elisetshenzisiwe.Ukusebenza kwe-laminate kunqunywa ngokuyinhloko ngesakhiwo, njengoba umthengi kufanele enze izimfuno ngokucophelela, futhi ngobuningi obunikeziwe, kunezakhiwo eziningi ezingahlangabezana nokubekezelelana okunikeziwe.Ukwehluka kokuqukethwe kwe-resin yemvelo (ngezinye izikhathi okubizwa ngokuthi isilinganiso sokhuni nendwangu ye-fiberglass) kuzothinta izakhiwo ze-laminate.
Uhlelo lulonke lwe-epoxy natural resin lwakhiwe inhlanganisela ehlukahlukene esebenzayo ye-epoxy, futhi inhlaka yemvelo ye-epoxy ejwayelekile engasebenzi kahle (ingxenye yayo ngayinye) itholakala ngokuhlanganiswa kweqembu elilodwa le-epoxy kanye ne-tetrabromofluorescein A (TBPA).Kunezinhlanganisela ezimbili ze-epoxy oxygen ezisebenzayo kuketango le-polymer), njengoba kukhonjisiwe kuMfanekiso 4.6.Ubude beketanga phakathi kwamaqembu bunquma ukuqina kwe-laminate kanye nezakhiwo ezishisayo ze-laminate.Phakathi nenqubo yokwelapha, amaqembu oksijini we-epoxy asabela nge-ejenti elaphayo ukuze aqalise i-matrix ye-polymer enezinhlangothi ezintathu.Njengengxenye yeketango le-polymer, i-Wakamura bromine yengezwa ku-TBBPA, okwenza i-TBPA ibe nezindawo ezikhethekile ezibamba amalangabi.Ngokusho kwe-Underwriters Laboratories
(Underwriters Laboratory) Ukuhlolwa kwe-UL94, ukuze wenze i-laminate eqediwe ngezinga le-V0 lokubuyiswa komlilo, kuyadingeka ukwengeza i-bromine phakathi kuka-16% no-21% ngesisindo.
Imikhiqizo yebhodi lesifunda se-pcb kubakhiqizi bebhodi lesifunda se-pcb multilayer ikhava amabhodi ungqimba we-2-28, amabhodi we-HDI, amabhodi ethusi aphezulu we-TG, amabhodi okubopha athambile futhi aqinile, amabhodi amafrikhwensi aphezulu, ama-laminates axubile abezindaba, abayizimpumputhe bangcwatshwa ngamabhodi, ama-substrates ensimbi futhi akukho. Ipuleti le-halogen.Inzuzo yesifunda sebhasi ye-Shenzhen ilele ezinhlobonhlobo zama-wrenches aphakathi kuya phezulu, futhi intengo isathengeka kakhulu, futhi isivele isendaweni ehamba phambili embonini ye-pcb.
Isikhathi sokuthumela: Aug-08-2022