Applicability of FR4 insulation board and 3240 insulation board

First, let's look at what FR4 laminate is. Glass epoxy FR4 sheet is a kind of flame resistant material grade code, and it is made of imported electronic non-alkali glass fiber cloth dipped in epoxy resin by hot pressing. Its mechanical strength, heat resistance and other properties of fr4 laminate have better performance. So what's 3240 epoxy glass sheet? It is a kind of hard plate insulating material which is made of electrical grade alkali-free glass fiber cloth impregnated with epoxy resin and phenolic resin by hot pressing.

What are the characteristics of fr4 laminate and 3240 glass epoxy board?

FR4 laminate has excellent mechanical processing properties; Excellent low water absorption rate (water absorption rate is almost 0, water absorption rate is only 0.09% after 24 hours of immersion); Good insulation strength, chemical resistance, radiation resistance and thermal shock resistance; Good tensile strength, flexural strength and low temperature adaptability; Glass epoxy fr4 has good electrical performance and low loss of electrical performance in high humidity or dry environment, and nema fr4 has flame retardant and heat resistance. 3240 glass epoxy board has a certain electrical insulation performance.

Color of fr4 laminate and 3240 glass epoxy board

The color of FR4 laminate is light green, which is the color of pure epoxy resin. After thermosetting molding, there will be some color differences in depth according to the different time of firing, and it does not affect the product performance. 3240 glass epoxy board is yellow.

Comprehensive performance comparison between FR-4 high strength fiberboard and traditional 3240 epoxy phenolic glass cloth laminate

1. The breakdown voltage and vertical electrical strength of epoxy phenolic glass cloth laminate 3240 are low, and the insulation resistance is relatively small after immersion. But the intensity is slightly lower.

2. When 3240 glass epoxy board is processed into insulating fixed parts, especially the workpiece with complex shape, it is easy to absorb moisture and produce lamination phenomenon, leading to parallel layer low resistance voltage, affecting the quality of the product. When nema FR4 is processed into insulating fixed parts, the processing surface is smooth, not easy to produce lamination phenomenon, and the product quality is stable.

3. FR-4 glass epoxy sheet has heat resistance, continuous working temperature (in the air) 150 °C; It is flame retardant and UL 94VO grade.

4. The 3240 glass epoxy board has very low flame retardancy, not up to UL 94VO grade.

5. The thickness tolerance of 3240 glass epoxy board is relatively large, and it is not applicable to the products with high electronic requirements.

6. The price of 3240 glass epoxy board has a great advantage over that of FR4 laminate sheet

ZTelec Group is professional in processing of fr4 laminate and 3240 glass epoxy board insulation board. If you have this demand, welcome to consult us.