High-Performance Polyimide (PI) Sheets: Exceptional Performance, Wide Applications
Polyimide (PI) sheets are high-performance engineering plastic sheet materials manufactured from polyimide resin as the base material, through specific processes (such as molding, extrusion, or casting followed by lamination). Dalian Allstar Material Co., Ltd. in China can provide various specifications and types of PI sheets to meet diverse industrial demands.
Exceptional Properties of Allstar Material's Polyimide (PI) Sheets
Our PI sheets, due to their unique molecular structure, possess the following performance advantages:
High-Temperature Resistance
Capable of long-term stable operation over a wide temperature range from -269°C to +260°C (can reach higher temperatures, e.g., 400°C, for short periods).
Excellent Mechanical Properties
Maintains high strength, high modulus, and good creep resistance even at elevated temperatures.
Outstanding Dimensional Stability
Features an extremely low coefficient of thermal expansion and low moisture absorption, ensuring precise dimensions in complex environments.
Good Chemical Corrosion Resistance
Exhibits good tolerance to most organic solvents, oils, and weak acids.
Electrical Insulation Performance
High dielectric strength and stable dielectric constant make it an ideal electrical insulation material.
Inherent Flame Retardancy
Achieves high flame retardant ratings (e.g., UL94 V-0) without the addition of flame retardants.
Radiation Resistance
Maintains its physical properties even under high-dose radiation environments.
Good Wear Resistance
Especially after specific modifications, it exhibits excellent wear resistance and low friction characteristics.
Classification of Allstar Material's PI Sheets
To meet the specific needs of different application scenarios, our PI sheets are primarily categorized as follows:

Unfilled/Pure PI Sheets
Made from pure polyimide resin, fully demonstrating the inherent basic properties of PI material.
Suitable for applications with high requirements for material purity and electrical insulation.

Modified/Reinforced PI Sheets
Pure PI is modified by adding specific fillers (e.g., graphite, PTFE, glass fiber, carbon fiber) to enhance specific material properties.
Enhanced Mechanical Strength & Rigidity (e.g., glass fiber/carbon fiber reinforced).
Improved Wear Resistance & Reduced Friction Coefficient (e.g., graphite/PTFE filled).
Increased Thermal Conductivity or Electrical Conductivity/Antistatic Properties (e.g., specific carbon-based fillers).
Dalian Allstar Material can provide customized modified PI sheet solutions based on specific customer operating conditions, available for wholesale. Contact
Typical Applications of Polyimide (PI) Sheets
Thanks to their comprehensive performance advantages, PI sheets are widely used in demanding industrial fields:

Aerospace & Defense Industry
Engine components, missile parts, high-temperature resistant structural parts, thermal barrier coatings, military fiber optic coatings.

Semiconductor & Electronics Industry
Wafer chucks, IC test sockets, LCD manufacturing process components, coil bobbins, flexible printed circuit (FPC) substrates, electric vehicle insulation paper.

Nuclear Power & Energy Sector
Radiation-resistant insulation layers for nuclear power cables, seals for high-temperature and high-pressure environments.

Automotive Industry
High-temperature resistant components in engine compartments, transmission thrust washers, bearing cages, turbocharger components.

Industrial Machinery
High-load sliding bearings, bushings, piston rings, valve seats, seals, high-end audio diaphragms. An excellent exterior finish can be achieved.

Precision Instruments
Structural parts requiring high dimensional stability, thermal insulation parts.
Allstar Material Available Sizes and Stock (from our factory)
We offer a wide range of Allstar material sizes with reliable stock directly from our factory to meet your project needs.
Thickness (mm) |
Width (mm) |
Length (mm) |
Density (g/cm³) |
Weight per meter (kg) |
---|---|---|---|---|
0.5 |
520 |
1000 |
1.4 |
0.364 |
0.6 |
520 |
1000 |
1.4 |
0.437 |
0.8 |
520 |
1000 |
1.4 |
0.582 |
1 |
520 |
1000 |
1.4 |
0.728 |
1.2 |
520 |
1000 |
1.4 |
0.874 |
1.5 |
520 |
1000 |
1.4 |
1.092 |
1.6 |
520 |
1000 |
1.4 |
1.165 |
1.8 |
520 |
1000 |
1.4 |
1.31 |
2 |
520 |
1000 |
1.4 |
1.456 |
2.5 |
520 |
1000 |
1.4 |
1.82 |
3 |
520 |
1000 |
1.4 |
2.184 |
3.5 |
520 |
1000 |
1.4 |
2.548 |
4 |
520 |
1000 |
1.4 |
2.912 |
5 |
520 |
1000 |
1.4 |
3.64 |
6 |
520 |
1000 |
1.4 |
4.368 |
7 |
520 |
1000 |
1.4 |
5.096 |
8 |
520 |
1000 |
1.4 |
5.824 |
10 |
520 |
1000 |
1.4 |
7.28 |
12 |
520 |
1000 |
1.4 |
8.736 |
15 |
520 |
1000 |
1.4 |
10.92 |
16 |
520 |
1000 |
1.4 |
11.648 |
18 |
520 |
1000 |
1.4 |
13.104 |
20 |
520 |
1000 |
1.4 |
14.56 |
22 |
520 |
1000 |
1.4 |
16.016 |
25 |
520 |
1000 |
1.4 |
18.2 |
28 |
520 |
1000 |
1.4 |
20.384 |
30 |
520 |
1000 |
1.4 |
21.84 |
32 |
520 |
1000 |
1.4 |
23.296 |
35 |
520 |
1000 |
1.4 |
25.48 |
40 |
520 |
1000 |
1.4 |
29.12 |
45 |
520 |
1000 |
1.4 |
32.76 |
50 |
520 |
1000 |
1.4 |
36.4 |
55 |
520 |
1000 |
1.4 |
40.04 |
60 |
520 |
1000 |
1.4 |
43.68 |
65 |
520 |
1000 |
1.4 |
47.32 |
70 |
520 |
1000 |
1.4 |
50.96 |
75 |
520 |
1000 |
1.4 |
54.6 |
80 |
520 |
1000 |
1.4 |
58.24 |
85 |
520 |
1000 |
1.4 |
61.88 |
90 |
520 |
1000 |
1.4 |
65.52 |
95 |
520 |
1000 |
1.4 |
69.16 |
100 |
520 |
1000 |
1.4 |
72.8 |
105 |
520 |
1000 |
1.4 |
76.44 |
Calculation Formula: Weight per meter (kg) = Thickness (mm) / 1000 * Width (mm) / 1000 * Length (mm) / 1000 * Density (g/cm³) * 1000 (Since length is 1000mm, i.e., 1 meter, density unit g/cm³ converted to kg/m³ is multiplied by 1000). Simplified to: Weight per meter (kg) = Thickness (mm) * Width (mm) * Density (g/cm³) / 1000. For this table (Width 520mm, Density 1.40g/cm³): Weight per meter (kg) = Thickness (mm) * 520 * 1.40 / 1000. Weight per meter (kg) = Thickness (mm) * 0.728
Seeking High-Performance PI Sheet Solutions?
Dalian Allstar Material is your reliable partner. We offer one-stop services from standard PI sheets to customized modified PI sheets and precision machining from our factory in China.
