High-Performance Polyimide (PI) Rods: Exceptional Performance, Choice for Precision Machining
Polyimide (PI) rods are solid cylindrical or specific cross-section shaped materials manufactured using polyimide resin as the base, through processes such as extrusion or molding. Dalian Allstar Material Co., Ltd. from China provides PI rods in various diameters and lengths to meet customer precision machining needs.
Exceptional Properties of PI Rods
Allstar Material's PI rods inherit the unique inherent performance advantages of polyimide material:
Outstanding High-Temperature Capability
Able to maintain structural and performance stability within a broad temperature range of -269°C to +260°C (some grades can reach higher temperatures for short durations).
Excellent Mechanical Performance
Possesses high tensile strength, high rigidity, and excellent creep resistance, even at elevated temperatures.
Superior Dimensional Stability
Extremely low coefficient of thermal expansion and water absorption rate ensure precise dimensions in environments with temperature and humidity fluctuations.
Good Chemical Inertness
Exhibits good resistance to most organic solvents, oils, and weak acids.
Prominent Electrical Insulation
High dielectric strength and stable dielectric properties make it suitable for demanding electrical insulation components.
Inherent Flame Retardancy
Typically achieves high flame retardancy ratings (e.g., UL94 V-0) without needing added flame retardants.
Excellent Radiation Resistance
Maintains physical integrity and performance in high-energy radiation environments.
Good Self-Lubrication and Wear Resistance
Especially after specific modifications, demonstrates excellent wear resistance and a low coefficient of friction.
Classification of PI Rods
To suit different application scenarios and performance focuses, Allstar Material's PI rods are primarily divided into the following two categories:
Pure PI Rods (Unfilled/Pure PI Rods)
Modified/Reinforced PI Rods
Typical Applications of PI Rods
Leveraging their comprehensive excellent properties, PI rods are widely used to manufacture various high-performance precision components:
Aerospace & Defense Industry
Small high-temperature resistant structural parts, bushings, seals, connector components, military fiber optic protective tubing components.
Semiconductor & Electronics Industry
Probe guides for IC test sockets, wafer handling components, vacuum pen tips, coil bobbins, insulation spacers, bolts, and nuts.
Nuclear Power & Energy Sector
Fasteners, insulation parts, and small valve components in radiation-resistant environments.
Automotive Industry
High-temperature engine components, transmission thrust washers, small rollers or pins for bearing cages, sensor components.
Industrial Machinery
High-load sliding bearings, bushings, precision guide pins, valve seats, seal rings, bolts, nuts, damping components in high-end audio equipment.
Medical Devices
Components requiring high-temperature sterilization resistance and biocompatibility (specific grades).
Precision Instruments
Micro-components with high dimensional stability requirements, thermal insulation parts.
Dalian Allstar Material customized modified PI rods
based on specific customer requirements for operating conditions and performance. Available for wholesale purchase from our factory.
|
Diameter (mm) |
Length (mm) |
Density (g/cm³) |
Weight per meter (kg) |
|---|---|---|---|
|
5 |
1000 |
1.4 |
0.027 |
|
6 |
1000 |
1.4 |
0.039 |
|
8 |
1000 |
1.4 |
0.07 |
|
10 |
1000 |
1.4 |
0.11 |
|
12 |
1000 |
1.4 |
0.158 |
|
15 |
1000 |
1.4 |
0.247 |
|
16 |
1000 |
1.4 |
0.281 |
|
18 |
1000 |
1.4 |
0.356 |
|
20 |
1000 |
1.4 |
0.44 |
|
22 |
1000 |
1.4 |
0.532 |
|
25 |
1000 |
1.4 |
0.687 |
|
28 |
1000 |
1.4 |
0.862 |
|
30 |
1000 |
1.4 |
0.99 |
|
32 |
1000 |
1.4 |
1.126 |
|
35 |
1000 |
1.4 |
1.347 |
|
40 |
1000 |
1.4 |
1.759 |
|
45 |
1000 |
1.4 |
2.226 |
|
50 |
1000 |
1.4 |
2.749 |
|
55 |
1000 |
1.4 |
3.326 |
|
60 |
1000 |
1.4 |
3.958 |
|
65 |
1000 |
1.4 |
4.646 |
|
70 |
1000 |
1.4 |
5.388 |
|
75 |
1000 |
1.4 |
6.185 |
|
80 |
1000 |
1.4 |
7.037 |
|
85 |
1000 |
1.4 |
7.945 |
|
90 |
1000 |
1.4 |
8.908 |
|
95 |
1000 |
1.4 |
9.926 |
|
100 |
1000 |
1.4 |
10.996 |
|
105 |
1000 |
1.4 |
12.12 |
Calculation Formula: Weight per meter (kg) = π * (Diameter (mm) / 2)² * Length (mm) * Density (g/cm³) / 1,000,000. Since length is 1000mm, simplified to: Weight per meter (kg) = π * (Diameter (mm) / 2)² * 1000 * Density (g/cm³) / 1,000,000. Weight per meter (kg) = π * (Diameter (mm) / 2000)² * 1 (meter) * (Density (g/cm³) * 1000) (kg/m³). For this table (Density 1.40 g/cm³): Weight per meter (kg) ≈ 3.14159 * (Diameter (mm) / 2000)² * 1400
Key Properties of Unfilled PI Rods
Unfilled PI rods offer excellent thermal stability, chemical resistance, and high mechanical strength, making them ideal for demanding engineering applications.
|
Property |
Unit |
Reference Value (Range) |
Test Standard (Example) |
|---|---|---|---|
|
Density |
g/cm³ |
1.38 - 1.43 |
ISO 1183 |
|
Tensile Strength |
MPa |
80 - 120 |
ISO 527 |
|
Elongation at Break |
% |
5--15 |
ISO 527 |
|
Flexural Modulus |
GPa |
3.0 - 4.5 |
ISO 178 |
|
Heat Deflection Temp (HDT, 1.8MPa) |
°C |
260 - 300+ |
ISO 75 |
|
Continuous Service Temp. |
°C |
≥ 260 |
- |
|
Volume Resistivity |
Ω·cm |
> 10¹⁶ |
IEC 60093 |
|
Dielectric Strength |
kV/mm |
> 20 |
IEC 60243 |
Note: The data above is for reference only. For detailed performance parameters of specific products, please contact our technical support or request a product specification sheet. Dalian Allstar Material offers PI rods in various diameters and lengths from our factory and can perform precision machining according to drawings, meeting specific exterior finish and tolerance requirements.
Looking for high-performance PI rods for your precision components?
Dalian Allstar Material is your trusted PI material and machining partner in China. We offer PI rods from standard specifications to customized modifications, along with high-precision manufacture and machining services.
