FR-4 Epoxy glass fiber cloth substrate
Regular thickness: 0.5~100mm
Regular size: 1020×2040mm
Compared with general insulating materials, the outstanding advantages of Flexible mica boards are:
Excellent high temperature resistance and insulation performance, the breakdown voltage still maintains 15kV/mm under the use environment of temperature 500-1000℃;
Superior mechanical properties, Flexible mica board has good tensile properties;
Stable chemical properties, excellent acid and alkali resistance and aging resistance;
Excellent environmental performance, does not contain toxic and harmful components, and does not produce toxic gases at high temperatures;
Excellent processing performance, can be processed into various shapes without delamination.
Packing: Generally 50kg is a pack, sealed with plastic film, and then packed in carton. When exporting, use fumigation-free trays and pack them according to less than 1000kg per tray, or use iron boxes for protection.
No. | Item | Unit |
| Testing Method |
1 | Bending strength | MPa | ≥340 | GB/T 1303.4-2009
|
2 | apparent flexural modulus | MPa |
| |
3 | Tensile Strength | MPa |
| |
4 | Parallel layer impact strength (simply supported beam method, notched) | kj/m2 | ≥33 | |
5 | Vertical layer-wise electrical strength (90C±2C, in 25# transformer oil, 20s step-up, O 25mm/ O 75mm cylindrical electrode system) | kV/mm | ≥11.4 | |
6 | Parallel Layer Breakdown Voltage (90°C±2°C, 25# transformer oil, 20s step-up, medium 130mm/O 130mm flat electrode system) | kV | ≥35 | |
7 | Dielectric Loss Factor(1MHz) | —— |
| |
8 | Insulation resistance after immersion in water | MQ | ≥5×104 | |
9 | Tracking Resistance Index(PTI 600) | —— |
| |
10 | Density | g/cm3 |
| |
11 | Water Absorption | mg | ≤27 |
![FR4 15](https://cdn.bluenginer.com/SJZ1lZLFqSUQhTp4/upload/image/products/FR4-15.jpeg)
![FR4 1](https://cdn.bluenginer.com/SJZ1lZLFqSUQhTp4/upload/image/products/FR4-1.jpeg)