Polyimide PI has high and low temperature resistance (-269~400℃), high friction resistance, self-lubrication, high strength, high insulation, radiation resistance, corrosion resistance, Low thermal expansion coefficient, organic solvent resistance, self-extinguishing, non-toxic and other comprehensive properties. The long-term working temperature of some types of PI is above 350℃, and the short-term working temperature can reach 450℃. Is the engineering plastic with the best temperature resistance among engineering plastics at present. Its comprehensive performance is unmatched by other special engineering plastics, and it is praised as "an expert in solving problems" by the world. It is widely used in high-tech fields such as aviation, aerospace, machinery, electricity, atomic energy, microelectronics, thin film and liquid crystal display.
| Product name | NJSSPI-1003 | NJSSPI-1006 | NJSSPI-1007 | NJSSPI-1008 | |
|---|---|---|---|---|---|
| Project | Units | Test data | |||
| Density | g/cm3 | 1.45 | 1.40 | 1.40 | 1.30 |
| Heat distortion temperature | ℃ | 380 | 260 | 300 | 220 |
| Coefficient of thermal expansion | /℃ | 5×10-5 | 2×10-5 | 5×10-5 | 5×10-5 |
| Tensile strength | MPa | 62.64 | 95.00 | 127.00 | 110.00 |
| Elongation at break | % | 4.91 | 7.00 | 6.20 | 10.00 |
| Bending strength | MPa | 149.00 | 150.00 | 94.00 | 125.00 |
| Bending modulus | GPa | 3.00 | 3.00 | 2.34 | 2.50 |
| Compressive strength | MPa | 136.50 | 120.00 | 162.00 | 100.00 |
| Coefficient of friction | - | 0.25-0.35 | 0.25-0.35 | 0.25-0.35 | 0.25-0.35 |
| Dielectric strength | KV/mm | 400.00 | 134.00 | 180.00 | |
| Dielectric constant | - | 2.8-3.4 | 3.0-3.2 | 2.8-3.4 | 3.0 |
| Surface resistivity | Ω | 1015 | 1014 | 2.6×1015 | 1015 |
| Volume resistivity | Ω.cm | 1016 | 1016 | 6.7×1015 | 1016 |
| Hardness (shore D) | HD | 85 | 85 | 85 | 85 |
| Notched impact strength | kJ/m2 | 19.00 | 25.00 | 12.00 | 20.00 |
| Water absorption | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 | |
| Low temperature resistance | -248.00 | -248.00 | -248.00 | -248.00 | |
