FR-4 bụ koodu nke ọkwa nke ihe na-eguzogide ire ọkụ, nke pụtara nkọwapụta ihe na ihe resin ga-enwe ike imenyụ ya n'onwe ya mgbe ọkụ gachara.Ọ bụghị aha ihe onwunwe, kama ọkwa ihe onwunwe.Ya mere, n'ozuzu PCB sekit mbadamba, E nwere ọtụtụ ụdị FR-4 ọkwa ihe eji, ma ọtụtụ n'ime ha bụ ihe mejupụtara ihe mere nke Tera-Function epoxy resin na filler na iko eriri.

FR-4 epoxy iko akwa laminate, dị ka dị iche iche ọrụ, a na-akpọkarị ụlọ ọrụ: FR-4 Epoxy Glass mkpuchi osisi, epoxy osisi, brominated epoxy osisi, FR-4, Glass fiberboard, FR-4 emesi osisi, FPC mesikwuru osisi. , Mgbanwe sekit osisi mesikwuru osisi, FR-4 epoxy osisi, ire ọkụ-retardant mkpuchi osisi, FR-4 laminated osisi, FR-4 iko fiberboard, epoxy iko ákwà osisi, epoxy iko ákwà laminated osisi, sekit osisi mkpọpu mpe mpe akwa.

Aha FR4 sitere na sistemụ grading NEMA ebe 'FR' pụtara 'ọkụ retardant', dabara na ọkọlọtọ UL94V-0.Nhọrọ FR4 na-esote TG130.TG na-ezo aka na okpomọkụ iko mgbanwe mgbanwe - okpomọkụ nke ihe na-eme ka iko na-eme ka ọ dị nro ga-amalite imebi ma dị nro.Maka bọọdụ ọkọlọtọ Fusion uru a bụ 130C, nke zuru oke maka ọtụtụ ngwa.Pụrụ iche High TG ihe nwere ike idi okpomọkụ nke 170 - 180 ° C, dị ka anyị ihe 3250. The FR-5,G11 nwere ike idi okpomọkụ nke 155 ° C.

Ọtụtụ FR4 laminates na-enweta ọkụ ọkụ na-eguzogide ọdịnaya bromine ya, halogen na-adịghị emeghachi omume nke a na-ejikarị eme ihe n'ụlọ ọrụ maka ihe na-egbochi ọkụ ya.Nke a na-enye ihe FR4 uru doro anya dị ka ngwaahịa PCB ngwaahịa n'ihe gbasara nchekwa ọkụ mgbe ọ nọ n'ọhịa.Ọ bụkwa ntakịrị ihe na-emesi obi ike ma ọ bụrụ na nkà ịre ahịa gị erughị ọkwa.

Otú ọ dị, bromine bụ halogen nke bụ kemịkalụ na-egbu egbu nke a na-ewepụta na gburugburu ebe obibi mgbe a na-akpọ ya ọkụ.Ọbụna obere ego zuru ezu iji merụọ mmadụ ahụ́ ma ọ bụ ọbụna nwụọ.Iji belata ojiji nke ihe ndị dị ize ndụ na ngwaahịa anyị kwa ụbọchị, laminates FR4 na-enweghị halogen dị ngwa ngwa.

N'oge na-adịbeghị anya, anyị emepụtala mpempe akwụkwọ na-acha ọcha na oji halogen-free FR4 epoxy glassfiber laminate sheets, ugbu a, a na-eji ya dị ka FPC kwadoro osisi na iphone, ikpo ọkụ, na ihe ndị ọzọ.