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China quality Polyimide fiberglass Laminated Sheet is a high-performance composite material made of polyimide resin and glass fiber cloth. It combines the high temperature resistance, chemical stability and excellent dielectric properties of polyimide resin with the high strength, dimensional stability and heat resistance of glass fiber cloth, making it a high-end engineering material widely used in extreme environments.It can withstand long-term operating temperatures above 250℃ and short-term temperatures of 300~400℃, while maintaining mechanical properties and dimensional stability at high temperatures.Fiberglass reinforcement gives it high tensile strength, tear resistance, and rigidity, making it suitable as a structural support material.It is resistant to most organic solvents, acids, and oils, and is not easily corroded. It can still be used for a long time in harsh chemical environments. It usually meets the UL94 V-0 flame retardant standard, is self-extinguishing when the flame is removed, and has high safety.
| No. | Property | Unit | Standard Values (IEC 60893-3-7) |
| 1 | Color | – | Brown/Amber |
| 2 | Density | g/cm³ | 1.70 – 1.90 |
| 3 | Water Absorption (2mm) | mg | ≤18 |
| 4 | Temperature Index (TI) | °C | ≥180 |
| 5 | Flammability Rating | Class | HB40 or better |
| 6 | Flexural Strength (⊥ laminations) | MPa | ≥450 |
| 7 | Flexural Strength at 180°C | MPa | ≥280 |
| 8 | Tensile Strength | MPa | ≥320 |
| 9 | Impact Strength (Charpy, ∥ laminations) | kJ/m² | ≥50 |
| 10 | Apparent Bending Elastic Modulus | MPa | ≥14,000 |
| 11 | Bond Strength | N | ≥5,000 |
| 12 | Dielectric Strength (⊥ laminations, in oil) | kV/mm | ≥20 (0.5-1mm) |
| 13 | Dielectric Strength (2.1-3mm) | kV/mm | ≥16 |
| 14 | Parallel Breakdown Voltage | kV | ≥35 |
| 15 | Insulation Resistance (after immersion) | Ω | ≥1.0×10⁸ |
| 16 | Dielectric Dissipation Factor (1MHz) | – | ≤0.05 |
| 17 | Dielectric Constant (1MHz) | – | ≤5.5 |
| 18 | Comparative Tracking Index (CTI) | V | ≥600 |
Disclaimer: The performance figures, parameters, and features described are typical values under specific test conditions and may vary in actual applications. They do not constitute a warranty or guarantee of performance under all conditions. Users are responsible for verifying the suitability of the product for their intended application.
1.It exhibits extreme high-temperature resistance, with long-term operating temperatures exceeding 250℃and short-term withstand temperatures of 300~400℃.
2.It has excellent mechanical strength, with high tensile strength, tear resistance, and rigidity, making it suitable as a structural support material.
3.It has a low coefficient of thermal expansion with good dimensional stability.
4. This Polyimide fiberglass Laminated Sheet typically meets UL94 V-0 flame retardant standards, is self-extinguishing upon removal of the flame, and offers high safety.
5. It is usually used as a substrate for circuit boards (especially in high-frequency and high-voltage environments), transformer insulating sheets, motor slot wedges, etc.
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