FR-4 ndi kachidindo ka giredi la zinthu zosagwira moto, zomwe zikutanthauza kuti zinthu zomwe utomoni umayenera kuzimitsa yokha ukayaka.Si dzina lakuthupi, koma kalasi yakuthupi.Choncho, matabwa ambiri PCB dera, Pali mitundu yambiri ya zipangizo FR-4 kalasi ntchito, koma ambiri a iwo ndi gulu zipangizo zopangidwa Tera-Function epoxy utomoni ndi filler ndi galasi CHIKWANGWANI.

FR-4 epoxy galasi nsalu laminate, malinga ndi ogwiritsa ntchito osiyanasiyana, makampani ambiri amatchedwa: FR-4 Epoxy Glass kutchinjiriza bolodi, epoxy bolodi, brominated epoxy bolodi, FR-4, Glass fiberboard, FR-4 analimbitsa bolodi, FPC analimbitsa bolodi , flexible circuit board board, FR-4 epoxy board, flame-retardant insulation board, FR-4 laminated board, FR-4 glass fiberboard, epoxy glass cloth board, epoxy glass cloth laminated board, board board pobowola.

Dzina FR4 limachokera ku kachitidwe ka NEMA komwe 'FR' imayimira 'chozimitsa moto', mogwirizana ndi muyezo wa UL94V-0.Njira ya FR4 imatsatiridwa ndi TG130.TG imatanthawuza kutentha kwa galasi losintha - kutentha komwe zinthu zowonjezeredwa ndi galasi zidzayamba kufota ndikufewetsa.Kwa matabwa wamba a Fusion mtengo uwu ndi 130 ° C, womwe ndi wokwanira pazogwiritsa ntchito zambiri.Zida Zapadera Zapamwamba za TG zimatha kupirira kutentha kwa 170 - 180 ° C, monga zinthu zathu 3250. The FR-5, G11 imatha kupirira kutentha kwa 155 ° C.

Ma laminate ambiri a FR4 ali chifukwa chokana moto wawo chifukwa cha bromine, halogen yosagwira ntchito yomwe imagwiritsidwa ntchito m'mafakitale chifukwa chochepetsa mphamvu yamoto.Izi zimapereka zida za FR4 zabwino zoonekeratu ngati katundu wa PCB potengera chitetezo chamoto mukakhala kumunda.Zimakhalanso zolimbikitsa pang'ono ngati luso lanu la soldering silinafike.

Komabe, bromine ndi halogen yomwe ndi mankhwala oopsa kwambiri omwe amatulutsidwa m'chilengedwe pamene zinthuzo zatenthedwa.Ngakhale ndalama zochepa zimakhala zokwanira kuvulaza kwambiri anthu kapena imfa.Kuchepetsa kugwiritsa ntchito zinthu zowopsa zotere muzinthu zathu zatsiku ndi tsiku, ma laminate a FR4 opanda halogen amapezeka mosavuta.

Posachedwapa tapanga mapepala oyera ndi akuda a halogen opanda FR4 epoxy glassfiber laminate, tsopano amagwiritsidwa ntchito ngati FPC yolimbitsa bolodi mu iPhone, mapepala otentha, ndi zina zotero.