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.

NEMA በአሜሪካ የኤሌክትሪክ አምራቾች ማህበር የተደነገገ የቁሳዊ ደረጃ ነው። ተጓዳኝ IEC ደረጃ EPGC202 ነው። ከእሱ ጋር የሚዛመድ የአገር ውስጥ ደረጃ የለም።

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. የተለያዩ ቅርጾች. የተለያዩ ሙጫዎች ፣ የማከሚያ ወኪሎች እና የመቀየሪያ ሥርዓቶች በቅጹ ላይ ከተለያዩ ትግበራዎች መስፈርቶች ጋር ሊስማሙ ይችላሉ ፣ እና ክልሉ በጣም ዝቅተኛ viscosity እስከ ከፍተኛ የማቅለጫ ነጥብ ጠጣር ሊሆን ይችላል።

2. ምቹ ማከሚያ. የተለያዩ የተለያዩ የማከሚያ ወኪሎችን ይምረጡ ፣ የኢፖክሲን ሙጫ ስርዓት ከ 0 ~ 180 temperature ባለው የሙቀት ክልል ውስጥ ሊድን ይችላል።

3. ጠንካራ ማጣበቂያ. በኤፖክሲን ሙጫ ሞለኪውላዊ ሰንሰለት ውስጥ ያሉት የዋልታ ሃይድሮክሳይል ቡድኖች እና የኤተር ትስስሮች ለተለያዩ ንጥረ ነገሮች ከፍተኛ ማጣበቂያ ያደርጉታል። በሚታከምበት ጊዜ የኢፖክሲን ሙጫ መቀነስ ዝቅተኛ ነው ፣ እና የመነጨው ውስጣዊ ውጥረት አነስተኛ ነው ፣ እንዲሁም የማጣበቅ ጥንካሬን ለማሻሻል ይረዳል።

4. ዝቅተኛ መቀነስ. በ epoxy resin እና ጥቅም ላይ በሚውለው የማከሚያ ወኪል መካከል ያለው ምላሽ የሚከናወነው በቀጥታ በሞለኪዩል ሞለኪውል ውስጥ የኢፖክሲ ቡድኖች በቀጥታ የመደመር ምላሽ ወይም ቀለበት መክፈቻ ፖሊመርዜሽን ምላሽ ነው ፣ እና ምንም ውሃ ወይም ሌላ ተለዋዋጭ ተለዋዋጭ ምርቶች አይለቀቁም። ከማይሟሉ የ polyester ሙጫዎች እና የፔኖሊክ ሙጫዎች ጋር ሲነፃፀሩ በሚታከሙበት ጊዜ በጣም ዝቅተኛ ማሽቆልቆል (ከ 2%በታች) ያሳያሉ።

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