The meaning of FR4 in FR4 epoxy glass fiber board

FR4 is a code for the grade of flame-retardant materials. It represents a material specification that the resin material must be able to extinguish by itself after burning. It is not a material name, but a material grade. Therefore, it is currently used in general circuit boards. There are many types of FR-4 grade materials, but most of them are composite materials made of so-called Tera-Function epoxy resin, Filler and glass fiber.

I-NEMA ngumgangatho ophathekayo ochazwe kuMbutho wabavelisi boMbane baseMelika. Umgangatho we-IEC ohambelanayo yi-EPGC202. Akukho mgangatho wasekhaya uhambelana nayo.

The closest domestic standard is 3240 epoxy laminated glass cloth board. The corresponding IEC standard of 3240 is EPGC201, and there is only a difference in flame retardancy between EPGC201 and EPGC202. Therefore, it can be simply considered that FR-4 is an improved product of 3240 with enhanced flame retardancy.

FR4 epoxy glass fiber board, the main material is imported prepreg. The colors are white, yellow and green. It still has high mechanical strength at room temperature of 150℃. It has good electrical performance in dry and wet state, flame retardant, used in electrical and electronic Insulation structural parts in other industries are carefully manufactured with imported raw materials, domestic presses and standard technology; the main specifications are 1000*2000 mm 1020mm*1220mm, because of the advantages of raw materials, it guarantees high quality, low price, and timely delivery. It has a solid customer base at home and abroad and enjoys a high reputation.

Application characteristics sharing of FR4 epoxy glass fiber board

1. Iifom ezahlukeneyo. Ii-resins ezahlukeneyo, iiarhente zokunyanga, kunye neenkqubo zokuguqula zinokuphantse zilungelelane neemfuno zezicelo ezahlukeneyo kwifom, kwaye uluhlu lunokuvela kwi-viscosity esezantsi kakhulu ukuya kwindawo ephezulu yokunyibilika.

2. Ukunyanga okufanelekileyo. Khetha iindidi zeearhente ezahlukeneyo zokuphilisa, inkqubo ye-epoxy resin inokuphiliswa kwinqanaba lobushushu le-0 ~ 180 ℃.

3. Ukunamathela okunamandla. Amaqela e-polar hydroxyl kunye ne-ether bond kwi-molecular chain ye-epoxy resins yenza ukuba inamathele kakhulu kwizinto ezahlukeneyo. Ukuncipha kwe-epoxy resin kusezantsi xa unyanga, kwaye uxinzelelo lwangaphakathi oluvelisiweyo lincinci, olunceda ukuphucula amandla okubambelela.

4. Ukuncipha okuphantsi. Impendulo phakathi kwe-epoxy resin kunye ne-arhente yokuphilisa esetyenziswayo yenziwa ngokudibanisa ngokuthe ngqo okanye ukuvulwa kwendandatho yokuphendula kwamaqela epoxy kwimolekyuli ye-resin, kwaye akukho manzi okanye ezinye iimveliso ezivelayo. Xa kuthelekiswa nentlaka ye-polyester engafakwanga kunye ne-phenolic resins, zibonisa ukuncipha okuphantsi kakhulu (ngaphantsi kwe-2%) ngexesha lokunyanga.

1. Mechanical properties. The cured epoxy resin system has excellent mechanical properties.