Wopanga Mpikisano wa PCB

Pcb Mipikisano wosanjikiza wozungulira bolodi opanga ndi akatswiri kafukufuku luso ndi gulu chitukuko, mbuye makampani patsogolo ndondomeko luso, ndi malo odalirika kupanga, malo kuyezetsa ndi Laboratories thupi ndi mankhwala ndi mitundu yonse ya ntchito.The FR-4 tikukamba apa ndi ambiri ntchito pepala mtundu kupanga pcb multilayer matabwa dera.
Zachiphamaso kwambiri, zotchingira zamkuwa zomwe zimagwiritsidwa ntchito kwambiri padziko lonse lapansi ndi NEMA yotchedwa FR4.
pafupifupi 14% ya okwana linanena bungwe limodzi kapena iwiri mbali FR-4 bolodi, ndi otsala za 40% ya bolodi Mipikisano wosanjikiza ndi woonda FR -4 laminates.Mapeto a mbiri yakale ya FR-4's kulamulira msika makamaka chifukwa chakuti amaposa kwambiri mapepala opangidwa ndi laminates muzinthu zotentha, kutentha kwa chinyezi ndi kukana kwa mankhwala, mphamvu yapamwamba yosinthasintha komanso mphamvu yabwino ya peel..FR4 ndiye laminate yoyamba yomwe ingagwiritsidwe ntchito popanga mapanelo am'mbali mwa masika chifukwa cha kukana chinyezi komanso kutulutsa mankhwala.Kuphatikiza apo, mtengo wandalama wa FR-4 ndi wosagonjetseka.Kwa zaka zambiri, makampaniwa akuganiza kuti FR-4 ipereka m'malo mwa zida zatsopano zopangira laminate zoyenera kusanjika kwakukulu kwa msonkhano.Komabe, chifukwa cha zovuta zamtengo wapatali, okonza matabwa ozungulira akuyang'anabe njira zogwiritsira ntchito FR-4 pamisonkhano yochuluka kwambiri.
Zomwe zimagwiritsidwa ntchito pazitsulo za FR4 ndi galasi lamagetsi Wib (E-glass).Chifukwa cha mawonekedwe ake abwino amakina, zokhutiritsa zotchinjiriza magetsi, kukana kutentha, kukana chinyezi ndi kukana kwa asidi, E-mtundu wagalasi fiber nsalu yakhala chinthu chabwino kwambiri chothandizira magetsi.Nsalu zonse zomwe zimagwiritsidwa ntchito mu FR4 zimakhala ndi mawonekedwe osalala molingana ndi njira yoluka dengu, ndipo pamwamba pake amakutidwa ndi utoto wosanjikiza kuti alimbikitse mgwirizano pakati pa ulusi wagalasi ndi utomoni wachilengedwe.Panthawi yoluka, makulidwe ndi kuchuluka kwa ulusi wagalasi zimatsimikiziridwa.Kulemera koyambirira ndi makulidwe a nsalu yomalizidwayo zimatsimikiziridwa, makulidwe a nsalu yagalasi ya fiber yomwe imagwiritsidwa ntchito pa bolodi yosindikizidwa nthawi zambiri imakhala kuyambira 6 mpaka 172m, ndipo prepreg yopangidwa ndi nsalu ya galasi imatsimikizira makulidwe a laminate.Nthawi zambiri, makulidwe a FR4 laminate ndi bam ~ 1L57mm (kuchuluka pakadutsa 25pm), ndipo makulidwe ake enieni amadalira mtundu wa nsalu yagalasi ya fiber ndi utomoni wachilengedwe wa pepala lamankhwala lomwe limagwiritsidwa ntchito.Kuchita kwa laminate kumatsimikiziridwa makamaka ndi kapangidwe kake, popeza wogula amayenera kufunafuna mosamalitsa, ndipo chifukwa cha makulidwe opatsidwa, pali zida zambiri zomwe zingakwaniritse kulolerana kopatsidwa.Kusiyanasiyana kwa utomoni wachilengedwe (omwe nthawi zina amatchedwa chiŵerengero cha nkhuni ndi nsalu ya fiberglass) zidzakhudza katundu wa laminate.
Dongosolo lonse la utomoni wachilengedwe wa epoxy limapangidwa ndi mitundu yosiyanasiyana yogwira ntchito ya epoxy, ndipo utomoni wachilengedwe wa epoxy (chilichonse mwa zigawo zake) umapezeka kudzera mu kaphatikizidwe ka gulu limodzi la epoxy ndi tetrabromofluorescein A (TBPA).Pali mitundu iwiri ya okosijeni ya epoxy pa tcheni cha polima), monga momwe tawonetsera pa Chithunzi 4.6.Kutalika kwa unyolo pakati pa magulu kumatsimikizira kulimba kwa laminate ndi kutentha kwa laminate.Panthawi yochiritsa, magulu a okosijeni a epoxy amachitapo kanthu ndi wothandizira kuti ayambitse matrix a polymer atatu-dimensional.Monga gawo la tcheni cha polima, Wakamura bromine amawonjezedwa ku TBBPA, zomwe zimapangitsa TBPA kukhala ndi katundu wapadera woletsa moto.Malinga ndi Underwriters Laboratories
(Underwriters Laboratory) UL94 kuyesa, kuti apange laminate yomalizidwa ndi V0 mlingo wa retardancy lawi, m'pofunika kuwonjezera bromine pakati pa 16% ndi 21% ndi kulemera.
The pcb dera bolodi mankhwala mu pcb multilayer gulu bolodi opanga kuphimba 2-28 matabwa wosanjikiza, HDI matabwa, mkulu TG wandiweyani mkuwa matabwa, zofewa ndi zovuta n'kumanga matabwa, mkulu pafupipafupi matabwa, osakaniza TV laminates, akhungu m'manda kudzera matabwa, magawo zitsulo ndi palibe Halogen mbale.Ubwino wa dera la basi la Shenzhen uli mumitundu yosiyanasiyana yapakatikati mpaka kumapeto, ndipo mtengo wake ndi wotsika mtengo kwambiri, ndipo uli kale paudindo wotsogola pamakampani a pcb.