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Formula: PEI
Form: Foil/Film/Sheet
Material: Polyetherimide (PEI)
CAS Number: 61128-46-9
Commodity: Polymers
Polyetherimide (PEI) Film, also known as PEI polymer sheet, is renowned for its exceptional thermal stability, mechanical strength, and chemical resistance. This high-performance material is ideal for applications in the aerospace, electronics, and automotive industries due to its ability to withstand extreme temperatures and harsh environments. PEI Film’s excellent dielectric properties make it suitable for use in electrical insulation and high-frequency electronics. Goodfellow supplies this advanced film, ensuring it meets stringent industry standards and delivers consistent, high-quality results. The film’s inherent flame retardancy and low smoke generation further enhance its suitability for critical applications, such as medical devices and high-performance electrical components. Goodfellow’s PEI Film is engineered to support cutting-edge technological advancements, providing a reliable solution for demanding industrial needs.
Tolerances
Foil/Film/Sheet
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good(-Fair?) |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Good-Poor |
| Aromatic hydrocarbons | Poor |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Poor |
| Ketones | Poor |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1kHz | 3.1 |
| Dissipation factor @ 1MHz | 0.0013@1 |
| Dielectric strength( kV mm⁻¹ ) | 30@1.6mm |
| Surface resistivity( Ohm/sq ) | 4.10¹³ |
| Volume resistivity( Ohmcm ) | 7.10¹⁵ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V-0 @ 0.4mm |
| Radiation resistance | Good |
| Resistance to Ultra-violet | Good/Fair |
| Limiting oxygen index( % ) | 47 |
| Water absorption - equilibrium( % ) | 1.3 |
| Water absorption - over 24 hours( % ) | 0.25 |
| Density( gcm⁻³ ) | 1.27 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | R125 |
| Poisson's ratio | 0.44 |
| Elongation at break( % ) | 60 |
| Compressive modulus( GPa ) | 2.9 |
| Tensile modulus( GPa ) | 2.9 |
| Izod impact strength( J m⁻¹ ) | 50 |
| Abrasive resistance - ASTM D1044( mg/1000 cycles ) | 10 |
| Tensile strength( MPa ) | 85 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 200 |
| Heat-deflection temperature - 1.8MPa( C ) | 190 |
| Upper working temperature( C ) | 170-200 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 2000 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.22@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 56 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 140 |
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Ytterbium Foil Formula: Yb
Percentage Purity: 99%
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Yttria-stabilized Zirconia Sheet (5% Yttria) Formula: ZrO₂/Y₂O₃
Thickness: 1mm
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Stabilised With: 5% Yttria
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X-ray Quality Rhodium Foil Grade: X-ray Quality
Formula: Rh
Percentage Purity: 99.9%
Temper: As Rolled
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Length 1: 10mm
Length 2: 10mm
CAS Number: 7440-16-6
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Zirconium Foil Formula: Zr
Percentage Purity: 99.2%
Thickness: 0.005mm
Length 1: 25mm
Length 2: 25mm
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