Ko te FR-4 he tohu mo te karaehe o nga rawa mura-a-te-ahi, ko te tikanga he tohu papanga ka taea e tetahi rawa kapia te tinei i muri i te wera.Ehara i te ingoa rawa, engari he tohu rauemi.Na reira, whānui PCB papa iahiko, He maha nga momo o FR-4 rauemi kōeke whakamahia, engari te nuinga o ratou he rauemi hiato hanga o Tera-Function epoxy resin ki filler me te muka karaihe.

FR-4 epoxy karaehe kakahu laminate, e ai ki nga kaiwhakamahi rereke, ko te nuinga o te waa e kiia ana ko te ahumahi: FR-4 Epoxy Glass insulation board, epoxy board, brominated epoxy board, FR-4, Glass fiberboard, FR-4 reinforced board, FPC reinforced board , poari ara iahiko ngawari e whakapakari ana, FR-4 epoxy board, mura-retardant insulation board, FR-4 laminated board, FR-4 glass fiberboard, epoxy glass fabric board, epoxy glass clothed board laminated, circuit board drilling pad.

Ko te ingoa FR4 i ahu mai i te punaha tohu NEMA kei reira te 'FR' e tohu ana mo te 'pure ahi', e tika ana ki te paerewa UL94V-0.Ko te kōwhiringa FR4 ka whai i te TG130.Ko te TG e tohu ana ki te pāmahana karaihe whakawhiti - te pāmahana ka timata te ahua o nga mea whakakaha-karaihe ki te whakaheke me te ngawari.Mo nga papa paerewa a Fusion he 130°C tenei uara, he nui ake mo te nuinga o nga tono.Ka taea e nga rauemi TG Motuhake Motuhake te tu atu i nga mahana o 170 - 180 ° C, penei i a maatau taonga 3250. Ka taea e te FR-5, G11 te tu atu i nga wera o 155 ° C.

Ko te nuinga o nga laminate FR4 he atete te mura ki ona ihirangi bromine, he halogen kore-rehohe e whakamahia nuitia ana i roto i nga ahumahi mo ona taonga whakamuri mura.Ma tenei ka whai hua nga taonga FR4 hei taonga PCB kararehe mo te haumaru ahi i a koe i te mara.He iti ano te whakamaarama ki te kore e eke o pukenga whakapiri ki te paerewa.

Heoi, ko te bromine he halogen he matū tino paitini ka tukuna ki te taiao i te wa e tahuna ana te rauemi.Ahakoa he iti noa nga moni ka nui ki te pa kino ki te tangata, ki te mate ranei.Hei whakaiti i te whakamahinga o aua matū morearea i roto i a tatou hua o ia ra, ka waatea noa nga raima FR4 kore halogen.

Inaianei kua whakawhanakehia e matou he ma me te pango halogen-kore FR4 epoxy glassfiber laminate pepa, inaianei kua whakamahia hei papa whakakaha FPC i roto i te iphone, rau whakamahana, me era atu.