FR-4 waa koodka darajada alaabta ololka u adkeysata, taas oo macneheedu yahay qeexid shay oo ah in shayga xabagta ay tahay in uu iskii u damiyo gubashada ka dib.Magac maaddi ah maaha, balse waa darajo maaddi ah.Sidaa darteed, looxyada wareegga guud ee PCB, Waxaa jira noocyo badan oo ah agabka darajada FR-4 ee la isticmaalo, laakiin intooda badan waa walxo isku dhafan oo laga sameeyay Tera-Function epoxy resin oo leh filler iyo fiber galaas ah.

FR-4 epoxy galaas laminate, marka loo eego isticmaalayaasha kala duwan, warshadaha waxaa guud ahaan loo yaqaan: FR-4 Epoxy Glass Board insulation Board, epoxy board, brominated epoxy board, FR-4, Glass fiberboard, FR-4 looxa la xoojiyay, FPC loox xoojiyay. , guddiga wareegga dabacsan xoojiyeen guddiga, FR-4 epoxy guddiga, guddiga dahaarka olol-retardant, guddiga FR-4 laminated, FR-4 fiberboard galaas, epoxy guddiga maro galaas, epoxy galaas maro dahaadhay guddiga, suuf wareeg ah guddiga wareegga.

Magaca FR4 wuxuu ka yimid nidaamka darajooyinka NEMA halkaasoo 'FR' u taagan tahay 'dab celiyaha', oo waafaqsan heerka UL94V-0.Xulashada FR4 waxaa ku xiga TG130.TG-gu waxa ay tilmaamaysaa heerkulka galaaska ee kala-guurka - heerkulka ay walxaha muraayadda lagu xoojiyay ay bilaabi doonaan inay qalloociyaan oo ay jilicsanaadaan.Looxyada caadiga ah ee Fusion qiimuhu waa 130°C, taas oo ku filan inta badan codsiyada.Qalabka gaarka ah ee TG wuxuu u adkeysan karaa heerkulka 170 - 180 ° C, sida alaabtayada 3250. FR-5,G11 waxay u adkeysan kartaa heerkulka 155 ° C.

Inta badan laminatesyada FR4 waxay leeyihiin iska caabbinta ololka ee ku jira bromine, halogen aan falcelin lahayn oo caadi ahaan loo isticmaalo warshadaha sifooyinkeeda dib u dhigista ololka.Tani waxay siinaysaa agabka FR4 faa'iidooyin cad sida walxo PCB ee kaydka ah marka loo eego badbaadada dabka inta lagu jiro garoonka.Sidoo kale waa wax yar oo lagu kalsoonaan karo haddii xirfadahaaga alxanka aysan gaarsiisnayn heerka.

Si kastaba ha ahaatee, bromine waa halogen oo ah kiimikooyin aad u sun ah oo lagu sii daayo deegaanka marka walxaha la gubo.Xataa xaddi yar ayaa ku filan in ay dhibaato halis ah u geysato bini'aadamka ama xataa dhimasho.Si loo yareeyo isticmaalka walxaha halista ah ee alaabtayada maalinlaha ah, laminates FR4-free halogen ayaa diyaar ah.

Dhawaan waxaan soo saarnay cad iyo madow halogen-free FR4 epoxy glassfiber laminate sheets, hadda waxaa loo isticmaalaa sidii guddiga FPC xoojiyay ee iphone, xaashida kululaynta, iyo wixii la mid ah.