Pcb multi-layer circuit board manufacturers muaj cov kws tshaj lij kev tshawb fawb thiab kev tsim kho pab pawg, paub txog kev lag luam cov txheej txheem thev naus laus zis, thiab muaj cov chaw tsim khoom lag luam txhim khu kev qha, cov chaw sim thiab cov chaw kuaj lub cev thiab tshuaj nrog txhua yam haujlwm.FR-4 peb tab tom tham txog ntawm no yog hom ntawv feem ntau siv hauv kev tsim cov pcb multilayer circuit boards.
Superficial heev, feem ntau siv tooj liab clad laminate thiab prepreg nyob rau hauv lub ntiaj teb no yog NEMA npe FR4
kwv yees li 14% ntawm tag nrho cov khoom tso tawm yog ib sab lossis ob sab FR-4 board, thiab qhov seem ntawm 40% ntawm cov txheej txheem ntau txheej yog nyias FR-4 laminates.Cov keeb kwm kawg ntawm FR-4's dominance ntawm kev ua lag luam yog vim qhov tseeb tias nws zoo heev tshaj cov ntawv-raws li laminates hauv thermal zog, txhim kho noo noo thiab tshuaj tsis kam, siab zog flexural thiab zoo tev lub zog..FR4 yog thawj laminate uas tuaj yeem siv rau lub caij nplooj ntoos hlav-los ntawm-qhov ob-sided panels vim nws tsis kam mus ya raws thiab tshuaj lom neeg exfoliation.Ntxiv rau, FR-4's tus nqi rau cov nyiaj yog unbeatable.Tau ntau xyoo, kev lag luam tau xav tias FR-4 yuav muab txoj hauv kev rau cov ntaub ntawv laminate tshiab tsim nyog rau kev sib dhos ntau dua.Txawm li cas los xij, vim tias tsis muaj nqi, cov neeg tsim hluav taws xob hauv Circuit Court tseem tab tom nrhiav txoj hauv kev siv FR-4 hauv cov rooj sib txoos loj.
Cov khoom siv txhawb zog siv rau FR4 laminates yog hluav taws xob iav Wib (E-iav).Vim tias nws cov khoom siv zoo tshwj xeeb, cov khoom siv hluav taws xob txaus siab, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov dej tsis zoo thiab cov kua qaub, E-hom iav fiber ntau tau dhau los ua cov khoom siv hluav taws xob zoo heev.Tag nrho cov ntaub siv hauv FR4 muaj cov qauv saum npoo du raws li cov txheej txheem ntawm kev xaws ib lub pob tawb, thiab qhov saum npoo yog coated nrog ib txheej xim los ntxiv dag zog rau kev sib koom ua ke ntawm cov iav fibers thiab ntuj resins.Thaum lub sij hawm shrink weaving txheej txheem, lub thickness thiab tus naj npawb ntawm iav fibers yog txiav txim.Qhov hnyav thiab tuab ntawm cov ntaub tiav tau txiav txim siab, lub thickness ntawm cov iav fiber ntau siv rau cov ntawv luam tawm feem ntau yog los ntawm 6 mus rau 172m, thiab cov prepreg muaj li ntawm cov iav fiber ntau txiav cov thickness ntawm laminate.Feem ntau, lub thickness ntawm FR4 laminate yog bam ~ 1L57mm (nce ntawm ib ntus ntawm 25 teev tsaus ntuj), thiab cov thickness tshwj xeeb yog nyob ntawm hom iav fiber ntau daim ntaub thiab cov ntsiab lus ntawm cov ntaub ntawv semi-chemical siv.Qhov kev ua tau zoo ntawm lub laminate feem ntau yog txiav txim siab los ntawm cov qauv, txij li tus neeg yuav khoom yuav tsum tau ua tib zoo xav, thiab rau qhov muab cov tuab, muaj ntau cov qauv uas tuaj yeem ua tau raws li qhov muab rau.Kev hloov pauv hauv cov ntsiab lus ntawm cov khoom qub (qee zaum hu ua qhov piv ntawm ntoo rau fiberglass daim ntaub) yuav cuam tshuam rau cov khoom ntawm laminate.
Tag nrho cov txheej txheem ntawm epoxy natural resin yog tsim los ntawm ntau yam khoom siv epoxy, thiab cov txheej txheem bifunctional epoxy natural resin (txhua yam ntawm nws cov khoom) tau los ntawm kev sib xyaw ntawm ib pawg epoxy thiab tetrabromofluorescein A (TBPA).Muaj ob lub reactive epoxy oxygen tebchaw nyob rau hauv lub polymer saw), raws li qhia nyob rau hauv daim duab 4.6.Cov saw ntev ntawm cov pab pawg txiav txim siab rigidity ntawm laminate thiab thermal zog ntawm laminate.Thaum lub sij hawm kho, cov epoxy oxygen pawg hnov mob nrog tus neeg sawv cev kho kom pib ua peb-dimensional polymer matrix.Raws li ib feem ntawm cov saw hlau polymer, Wakamura bromine ntxiv rau TBBPA, uas ua rau TBPA muaj cov nplaim hluav taws tshwj xeeb.Raws li Underwriters Laboratories
(Underwriters Laboratory) UL94 xeem, txhawm rau ua kom tiav laminate nrog V0 qib ntawm cov nplaim hluav taws, nws yuav tsum tau ntxiv bromine ntawm 16% thiab 21% los ntawm qhov hnyav.
pcb Circuit Court board khoom nyob rau hauv pcb multilayer Circuit Court board manufacturers npog 2-28 txheej boards, HDI boards, siab TG tuab tooj liab boards, mos thiab nyuaj bonding boards, siab zaus boards, mixed media laminates, dig muag faus ntawm boards, hlau substrates thiab tsis Halogen phaj.Qhov zoo ntawm Shenzhen tsheb npav Circuit Court nyob rau hauv ntau yam ntawm nruab nrab-rau-siab-kawg wrenches, thiab tus nqi tseem pheej yig heev, thiab nws twb nyob rau hauv ib txoj hauj lwm nyob rau hauv lub pcb kev lag luam.
Post lub sij hawm: Aug-08-2022