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Formula: PI
Form: Laminate
Material: PI
CAS Number: 60842-76-4
Commodity: Polymers
Goodfellow's new PI Laminate Sizes offer a range of polyimide-based laminates in various sheet sizes. These laminates combine the impressive thermal and mechanical properties of polyimide films with the structural stability of fiber reinforcement. With high heat resistance, strength, and electrical insulation, these laminates are ideal for applications in aerospace, automotive, and electrical industries. Available in multiple standard sheet sizes, PI Laminate Sizes provide engineers and designers an off-the-shelf solution for prototypes and production components. This addition expands Goodfellow's selection of polyimide laminate materials.
Tolerances
Laminate
| Thickness | ±10% |
|---|
Sizes
| Linear dimension | =<100mm | ±1mm |
|---|---|---|
| Linear dimension | >100mm | +2% / -1% |
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Fair |
| Alcohols | Poor |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Halogens | Fair |
| Ketones | Good |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.42 |
| Hardness - Rockwell | E52-99 |
| Elongation at break( % ) | Aug-70 |
| Tensile modulus( GPa ) | 02-Mar |
| Izod impact strength( J m⁻¹ ) | 80 |
| Tensile strength( MPa ) | 70-150 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 3.4 |
| Dissipation factor @ 1kHz | 0.0018 |
| Dielectric strength( kV mm⁻¹ ) | 22 |
| Surface resistivity( Ohm/sq ) | 10¹⁶ |
| Volume resistivity( Ohmcm ) | 10¹⁸ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V0 |
| Radiation resistance | Good |
| Refractive index | 1.66 |
| Resistance to Ultra-violet | Poor |
| Limiting oxygen index( % ) | 53 |
| Water absorption - over 24 hours( % ) | 0.2-2.9 |
| Density( gcm⁻³ ) | 1.42 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 1.8MPa( C ) | 360 |
| Lower working temperature( C ) | -270 |
| Upper working temperature( C ) | 250-320 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1090 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.1-0.35@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 30-60 |