Product Description:
POLYCIMA-PA12 (Chinese name: polydodecanolactam, also known as Nylon 12) is a semicrystalline to crystalline thermoplastic material derived from butadiene. It belongs to the polyamide family. Its crystal structure differs from that of PA11, but its properties are similar. It has a lower melting point and density than PA6 and PA66, and offers low moisture absorption with retained insulation capability, excellent electrical insulation, impact resistance, and chemical stability.
Product Application:
It is specifically used as the outer insulating protective layer for copper or aluminum busbars in charging piles. As a replacement for imported materials, it primarily takes advantage of its excellent electrical insulation, low moisture absorption, and chemical resistance to form a reliable protective layer over copper/aluminum busbars. This ensures non-conductivity under high voltage and high current, and provides resistance to heat, humidity, and chemical corrosion.
Performance Indictors
Performance | Value | Unit | Test Method |
Specific Gravity | 1.09 | g/cm³ | ASTM D792 |
Mold Shrinkage - Flow (3.18 mm) | 0.2 | % | ASTM D955 |
Equilibrium Water Absorption (20°C, 65%RH) [1] | 0.95 | % | - |
Equilibrium Water Absorption (20°C, Immersed in water) [1] | 1~50 | % | - |
Hardness |
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Rockwell Hardness (R-scale) | 115 | - | ASTM D785 |
Mechanical Properties |
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Tensile Modulus | 8960 | MPa | ASTM D638 |
Tensile Strength | 148 | MPa | ASTM D638 |
Elongation (Break) | 4.5 | % | ASTM D638 |
Flexural Modulus | 8620 | MPa | ASTM D790 |
Flexural Strength | 214 | MPa | ASTM D790 |
Compressive Strength | 110 | MPa | ASTM D695 |
Impact Properties |
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Izod Impact, Notched (6.35 mm) | 230 | J/m | ASTM D256 |
Izod Impact, Unnotched (6.35 mm) | 1100 | J/m | ASTM D256 |
Thermal Properties |
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Heat Deflection Temperature | - | °C | ASTM D648 |
0.45 MPa, Unannealed | 182 | °C | - |
1.8 MPa, Unannealed | 177 | °C | - |
Coefficient of Linear Thermal Expansion - Flow | 0.000038 | cm/cm/°C | ASTM D696 |
Thermal Conductivity | 0.5 | W/m/K | ASTM C177 |
Electrical Properties |
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Volume Resistivity | 1.00E+14 | ohm·cm | ASTM D257 |
Dielectric Strength | 20 | kV/mm | ASTM D149 |
Dielectric Constant (1 MHz) | 3.8 | - | ASTM D150 |
Dissipation Factor (1 MHz) | 0.016 | - | ASTM D150 |
Arc Resistance | 120 | sec | ASTM D495 |
Flammability |
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UL Flammability Rating (0.8 mm, RTP Tested) | HB | - | UL 94 |
Packaging/Storage:
25 kg/bag. Transport as general chemicals. Store in a dry, cool place away from direct sunlight. Shelf life: 1 year.
Note:
The technical properties and data provided in this document are for reference only and cannot be used as a basis for inspection or guarantee. Users who purchase our products are also responsible for conducting their own tests to verify the suitability for their intended processes, applications, performance requirements, and standards. Since the application and processing of our products are beyond our control, the user assumes all responsibility for any issues arising therefrom.
Extrusion Processing Guide
· Length/Diameter Ratio: 20:1 - 25:1
· Compression Ratio: 2.5 - 3.0
· Screen Pack and Breaker Plate: Required
· Drawdown: 5 - 10%
· Cooling: Water bath cooling
· Screw Temperatures (°C):
Main Processing Notes:
A: It is recommended to dry at 90°C for 2–4 hours.