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 iyizinga lezinto ezibonakalayo elishiwo yi-American Electrical Manufacturers Association. Izinga elihambelanayo le-IEC yi-EPGC202. Ayikho indinganiso yasekhaya ehambelana 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. Amafomu ahlukahlukene. Izinhlaka ezahlukahlukene, ama-ejenti aphulukisayo, kanye nezinhlelo zokuguqula cishe zingazivumelanisa nezidingo zezinhlelo zokusebenza ezahlukahlukene kwifomu, futhi ububanzi bungaba kusuka ku-viscosity ephansi kakhulu kuye kokuqina okuphezulu kokuncibilika.

2. Ukwelapha okulula. Khetha ama-ejenti ahlukahlukene aphulukisayo, uhlelo lwe-epoxy resin cishe lungalapheka ebangeni lokushisa elingu-0 ~ 180 ℃.

3. Ukunamathela okuqinile. Amaqembu aphethwe yi-polar hydroxyl kanye nezibopho ze-ether ochungechungeni lwamangqamuzana ezinhlaka ze-epoxy zikwenza kube ukunamathela kakhulu ezintweni ezahlukahlukene. Ukuncipha kwe-epoxy resin kuphansi lapho welapha, futhi ukucindezela kwangaphakathi okukhiqizwe kuncane, okusiza nokwenza ngcono amandla wokubambelela.

4. Ukuncipha okuphansi. Ukusabela phakathi kwe-epoxy resin kanye ne-ejenti ephulukisayo esetshenziswayo kwenziwa ngokufaka okuqondile ngqo noma ukuvulwa kwendandatho kokuphendula kwamaqembu epoxy ku-molecule ye-resin, futhi awekho amanzi noma eminye imikhiqizo evela ezintekenteke ekhishwayo. Uma kuqhathaniswa nezinhlayiya ze-polyester ezingasetshenziswanga nama-phenolic resins, akhombisa ukuncipha okuphansi kakhulu (ngaphansi kuka-2%) ngesikhathi sokuphulukiswa.

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