- 17
- Oct
The meaning of FR4 in FR4 epoxy glass fiber board
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 एक सामग्री मानक अमेरिकी विद्युत उत्पादक संघ द्वारा निर्धारित छ। सम्बन्धित IEC मानक EPGC202 हो। त्यहाँ कुनै घरेलु मानक यसको अनुरूप छैन।
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. विभिन्न रूपहरु। विभिन्न रेजिन, उपचार एजेन्टहरु, र परिमार्जित प्रणाली लगभग रूप मा विभिन्न अनुप्रयोगहरु को आवश्यकताहरु लाई अनुकूलन गर्न सक्नुहुन्छ, र दायरा धेरै कम चिपचिपाहट बाट उच्च पिघलने बिन्दु ठोस हुन सक्छ।
2. सुविधाजनक उपचार। विभिन्न उपचार एजेन्टहरु को एक किस्म छान्नुहोस्, epoxy राल प्रणाली लगभग 0 ~ 180 of को तापमान दायरा मा ठीक गर्न सकिन्छ।
3. बलियो आसंजन। निहित ध्रुवीय हाइड्रोक्सिल समूह र epoxy रेजिन को आणविक श्रृंखला मा ईथर बन्धन यो विभिन्न पदार्थहरु को लागी अत्यधिक चिपकने बनाउँछ। Epoxy राल को संकुचन कम हुन्छ जब उपचार, र आन्तरिक तनाव उत्पन्न सानो छ, जो पनि आसंजन शक्ति सुधार गर्न मद्दत गर्दछ।
4. कम संकुचन। Epoxy राल र प्रयोग क्युरिंग एजेन्ट को बीच प्रतिक्रिया सीधै अतिरिक्त प्रतिक्रिया वा राल अणु मा epoxy समूहहरु को औंठी खोलने बहुलकीकरण प्रतिक्रिया द्वारा गरिन्छ, र कुनै पानी वा अन्य अस्थिर उप-उत्पादनहरु जारी गरीन्छ। असंतृप्त पलिएस्टर रेजिन र फेनोलिक रेजिन संग तुलना, उनीहरु धेरै कम संकोचन (२%भन्दा कम) उपचार को समयमा देखाउँछन्।
- Mechanical properties. The cured epoxy resin system has excellent mechanical properties.