Pcb multi-layer redunhu bhodhi vagadziri vane unyanzvi hwokugadzira tsvakurudzo uye kukura chikwata, tenzi indasitiri wacho yepamusoro muitiro michina, uye vane yakavimbika kugadzirwa zvivako, zvivako yokuedza uye muviri uye makemikari marabhoritari ane marudzi ose mabasa.Iyo FR-4 yatiri kutaura pamusoro apa ndiyo inonyanya kushandiswa pepa mhando mukugadzirwa kwepcb multilayer redunhu mapuranga.
Yepamusoro-soro, inonyanya kushandiswa copper clad laminate uye prepreg pasi rose inonzi NEMA inonzi FR4.
inenge 14% yekubuda kwese iine divi rimwe chete kana kaviri-sided FR-4 board, uye yasara inenge 40% ye-multi-layer board itete FR -4 laminates.Kupera kwenhoroondo yeFR-4's kutonga kwemusika kunonyanya kukonzerwa nekuti inopfuura zvakanyanya mapepa-akavakirwa laminates mune zvinopisa zvivakwa, yakagadziridzwa mwando uye makemikari kuramba, yakakwirira flexural simba uye yakanaka peel simba..FR4 ndiyo yekutanga laminate inogona kushandiswa kuchitubu-kuburikidza-gomba kaviri-mativi mapaneru nekuda kwekupokana kwayo nekunyorova uye makemikari exfoliation.Uyezve, iyo FR-4's kukosha kwemari haikundike.Kwemakore, indasitiri yaifungidzira kuti FR-4 ichapa nzira kune ichangobva kugadzirwa laminate zvinhu zvakakodzerwa nepamusoro gungano density.Zvisinei, nekuda kwezvipingamupinyi zvemitengo, vagadziri vebhodhi redunhu vachiri kutsvaga nzira dzekushandisa FR-4 mumagungano epamusoro-soro.
Iyo yekusimbisa zvinhu inoshandiswa kune FR4 laminates ndeyemagetsi girazi Wib (E-girazi).Nekuda kweayo akanyanya kunaka ma mechanic properties, inogutsa magetsi ekudzivirira zvivakwa, kupisa kupisa, hunyoro kuramba uye asidi kuramba, E-mhando yegirazi faibha jira rave rakanaka kwazvo rekusimbisa magetsi.Machira ese anoshandiswa muFR4 ane chimiro chakatsetseka chepamusoro zvinoenderana nenzira yekuruka bhasiketi, uye kumusoro kwakaputirwa nependi yependi kusimbisa kubatana pakati pegirazi fibers nemasikirwo resin.Munguva ye shrink weave process, ukobvu uye nhamba yegirazi fiber inotarwa.Huremu hwekutanga uye kukora kwejira rakapedzwa rinotemerwa, ukobvu hwegirazi fiber jira rinoshandiswa pabhodhi rakadhindwa rinonyanya kubva pa6 kusvika 172m, uye prepreg inoumbwa negirazi fiber jira inotaridza ukobvu hwelaminate.Kazhinji, ukobvu hweFR4 laminate ndeye bam ~ 1L57mm (inowedzera panguva dze25pm), uye ukobvu chaihwo hunoenderana nerudzi rwegirazi fiber jira uye resin chaiyo yemukati yehafu-kemikari pepa rinoshandiswa.Kuita kwelaminate kunonyanya kutsanangurwa nechimiro, sezvo mutengi achifanira kunyatsoita zvinodiwa, uye nehupamhi hwakapihwa, kune akawanda maumbirwo anogona kusangana neakapihwa kushivirira.Kusiyana mune zvakasikwa resin yemukati (dzimwe nguva inonzi chiyero chehuni kune fiberglass jira) ichakanganisa zvimiro zvelaminate.
Iyo yese system ye epoxy natural resin inoumbwa neakasiyana anoshanda epoxy compounds, uye yakajairwa bifunctional epoxy natural resin (chimwe nechimwe chezvikamu zvayo) inowanikwa kuburikidza nekugadzirwa kweboka rimwe chete epoxy uye tetrabromofluorescein A (TBPA).Pane maviri reactive epoxy oxygen compounds pa polymer cheni), sezvinoratidzwa mumufananidzo 4.6.Kureba kweketani pakati pemapoka kunogadzirisa kuoma kwe laminate uye thermal properties ye laminate.Munguva yekurapa, mapoka epoxy oxygen anoita neanorapa kuti atange matatu-dimensional polymer matrix.Sechikamu chepolymer cheni, Wakamura bromine inowedzerwa kuTBBPA, izvo zvinoita kuti TBPA ive yakakosha inodzoreredza moto.Maererano ne Underwriters Laboratories
(Underwriters Laboratory) UL94 bvunzo, kuti ugadzire laminate yakapedzwa ine V0 nhanho yekunonoka kwemoto, zvinodikanwa kuwedzera bromine pakati pe16% ne21% nehuremu.
The pcb redunhu bhodhi zvigadzirwa mu pcb multilayer redunhu bhodhi vagadziri anofukidza 2-28 layer mapuranga, HDI mapuranga, yakakwirira TG gobvu mhangura mapuranga, nyoro uye zvakaoma bonding mapuranga, yakakwirira frequency mapuranga, yakavhenganiswa vezvenhau laminates, bofu akavigwa Via mapuranga, simbi substrates uye hapana. Halogen ndiro.Kubatsira kweShenzhen bhazi redunhu riri mumhando dzakasiyana dzepakati-kusvika-yepamusoro-yekupedzisira wrenches, uye mutengo uchiri kudhura zvakanyanya, uye watove munzvimbo inotungamira muindasitiri yePC.
Nguva yekutumira: Aug-08-2022