描述
VESTAMID L-R3-EI BK is a high-viscosity, electrically conductive polyamide 12 (PA12) resin from Evonik. The grade is designed for applications where the dimensional stability, chemical resistance and impact performance of PA12 must be combined with controlled electrical conductivity.
The key positioning of VESTAMID L-R3-EI BK is its combination of high viscosity, electrical conductivity and enhanced impact resistance. It is particularly relevant to industrial components used in environments where electrostatic charge must be controlled.
A major application area is parts for explosion-protected machines and rooms. Electrical resistance in the finished molded or extruded component can be influenced by processing conditions, so production parameters and final-part testing are important when a specific resistance range is required.
As part of the VESTAMID L family, the material benefits from the general advantages of PA12, including very low water absorption, strong dimensional stability, good impact behavior and resistance to oils, greases, fuels and many solvents.
Explore more materials in our PA12 Polyamide 12 Product Category →.
For manufacturer information about the VESTAMID PA12 portfolio, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L-R3-EI BK
| Feature | Benefit |
|---|---|
| Electrically Conductive | Helps dissipate or control electrical charge in functional components |
| High Viscosity | Provides useful melt strength for demanding processing and extrusion applications |
| Enhanced Impact Resistance | Supports tough components exposed to mechanical loads |
| PA12 Base Resin | Combines conductivity with the characteristic benefits of polyamide 12 |
| Low Water Absorption | Helps maintain dimensions when environmental humidity changes |
| Dimensional Stability | Useful for precision industrial components |
| Chemical Resistance | PA12 offers resistance to many oils, fuels, greases and solvents |
| Black Color | Supplied as a functional black conductive grade |
| Processing Versatility | Suitable for molded and extruded conductive parts |
| Explosion-Protection Applications | Intended for components used in explosion-sensitive industrial environments |
Typical Applications for VESTAMID L-R3-EI BK
VESTAMID L-R3-EI BK is best suited to applications where a conventional electrically insulating PA12 grade is not sufficient and controlled conductivity is required.
| Application Area | Typical Use |
|---|---|
| Explosion-Protected Equipment | Components for explosion-protected machines and rooms |
| Conductive Housings | Industrial housings requiring electrical charge dissipation |
| Electrical Components | Functional molded parts requiring conductive or antistatic behavior |
| Industrial Machinery | Components used in areas where static charge must be controlled |
| Profile Extrusion | Conductive profiles and technical extruded parts |
| Technical Components | Tough, dimensionally stable PA12 parts with electrical functionality |
Typical Properties of VESTAMID L-R3-EI BK
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.06 g/cm³ | ISO 1183 |
| Water Absorption | 1.2% | Similar to ISO 62 |
| Humidity Absorption | 0.5% | Similar to ISO 62 |
| Molding Shrinkage – Parallel | 1.6% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.6% | ISO 294-4 / 2577 |
| Melt Volume-Flow Rate (MVR) | 150 cm³/10 min | ISO 1133 |
| MVR Test Condition | 275°C / 21.6 kg | — |
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Modulus | 1,600 MPa | ISO 527 |
| Tensile Strength / Yield Stress | 42 MPa | ISO 527 |
| Yield Strain | 9% | ISO 527 |
| Stress at Break | 38 MPa | ISO 527 |
| Nominal Strain at Break | 26% | ISO 527 |
| Charpy Notched Impact, 23°C | 10 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 9 kJ/m² | ISO 179/1eA |
| Flexural Modulus | 1,540 MPa | ISO 178 |
| Flexural Strength | 59 MPa | ISO 178 |
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 178°C | ISO 11357 |
| HDT @ 0.45 MPa | 130°C | ISO 75-1/-2 |
| HDT @ 1.80 MPa | 60°C | ISO 75-1/-2 |
| Vicat Softening Temperature A | 177°C | ISO 306 |
| Vicat Softening Temperature B | 146°C | ISO 306 |
| CTE – Parallel | 150 × 10⁻⁶/K | ISO 11359 |
| CTE – Normal | 150 × 10⁻⁶/K | ISO 11359 |
Electrical & Flammability Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Volume Resistivity | 1.5 Ω·m | IEC 62631-3-1 |
| Surface Resistivity – Circular Electrodes | 2.0 × 10² Ω/sq | IEC 62631-3-2 |
| Surface Resistance | 1.0 × 10² Ω | IEC 62631-3-2 |
| Surface Resistivity | 1.0 × 10³ Ω/sq | IEC 62631-3-2 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
The electrical resistance measured on finished VESTAMID L-R3-EI BK parts can vary with processing conditions and part design. For applications with a defined resistance target, final production parts should be validated under the actual processing conditions.
Why Choose VESTAMID L-R3-EI BK?
The main advantage of VESTAMID L-R3-EI BK is that it adds electrical functionality to a PA12 engineering resin while retaining useful impact performance and dimensional stability.
Standard PA12 grades are normally electrically insulating. Where static charge must be dissipated, a conductive PA12 grade can provide a more suitable solution without abandoning the low-moisture and chemical-resistance advantages associated with PA12.
Its high viscosity also makes the material relevant to applications where melt strength is important. This can be useful in technical extrusion and in applications where stable processing behavior is required.
Processing Guidelines for VESTAMID L-R3-EI BK
VESTAMID L-R3-EI BK can be processed as a thermoplastic PA12 conductive compound. Typical published test conditions include the following:
| Processing Item | Typical Condition |
|---|---|
| Melt Temperature | Approx. 250°C |
| Mold Temperature | Approx. 80°C |
| Injection Velocity | Approx. 200 mm/s |
| Holding Pressure | Approx. 70 MPa |
Because this is an electrically conductive grade, processing conditions are especially important. Melt temperature, injection velocity, material orientation, part wall thickness and mold design can influence the conductive network formed in the final component.
For parts with critical resistance requirements, establish a stable processing window and confirm the electrical resistance directly on production components.
VESTAMID L-R3-EI BK vs. VESTAMID L-R2-GF25 BK
| Feature | VESTAMID L-R3-EI BK | VESTAMID L-R2-GF25 BK |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Electrical Function | Electrically conductive | Electrically conductive |
| Glass Fiber Reinforcement | No GF25 designation | Approx. 25% glass fiber |
| Main Mechanical Character | Higher impact / lower stiffness | High stiffness and strength |
| Tensile Modulus | Approx. 1,600 MPa | Approx. 6,800 MPa |
| Typical Selection | Conductive parts requiring toughness and high viscosity | Conductive structural parts requiring high stiffness |
Choose VESTAMID L-R3-EI BK when electrical conductivity, toughness and high viscosity are the priorities.
Choose VESTAMID L-R2-GF25 BK when the application also requires substantially higher stiffness from glass-fiber reinforcement.
Related Products
VESTAMID L-R2-GF25 BK – 25% glass-fiber reinforced electrically conductive PA12.
VESTAMID L-CF15 BK E70461 – Carbon-fiber reinforced PA12 for applications requiring reinforced performance.
VESTAMID L-GF30 – 30% glass-fiber reinforced PA12 for high-strength structural components.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L-R3-EI BK
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Compliance Documents | Relevant regulatory documentation subject to availability |
Need technical documents for VESTAMID L-R3-EI BK?
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FAQ About VESTAMID L-R3-EI BK
Q1: What is VESTAMID L-R3-EI BK?
VESTAMID L-R3-EI BK is a high-viscosity, electrically conductive PA12 resin from Evonik with enhanced impact resistance. It is intended for functional conductive components, including parts for explosion-protected machines and rooms.
Q2: Is VESTAMID L-R3-EI BK electrically conductive?
Yes. VESTAMID L-R3-EI BK is an electrically conductive PA12 grade designed for applications where electrostatic charge must be controlled or dissipated.
Q3: What are the main applications of VESTAMID L-R3-EI BK?
Typical applications include conductive industrial components and parts used in explosion-protected machines, rooms and other environments where electrical conductivity is required.
Q4: What is the density of VESTAMID L-R3-EI BK?
The typical density of VESTAMID L-R3-EI BK is approximately 1.06 g/cm³ according to ISO 1183.
Q5: What is the volume resistivity of VESTAMID L-R3-EI BK?
The published typical volume resistivity is approximately 1.5 Ω·m according to IEC 62631-3-1. Resistance in finished components can vary depending on processing conditions.
Q6: What is the tensile modulus of VESTAMID L-R3-EI BK?
The typical tensile modulus is approximately 1,600 MPa according to ISO 527.
Q7: What is the melting temperature of VESTAMID L-R3-EI BK?
The typical melting temperature is approximately 178°C.
Q8: Can VESTAMID L-R3-EI BK be injection molded or extruded?
Yes. The grade can be used for thermoplastic molding and technical extrusion applications. Processing conditions should be optimized for the actual part geometry and required electrical resistance.
Q9: Does processing affect the electrical resistance of VESTAMID L-R3-EI BK?
Yes. The electrical resistance of finished parts is dependent on processing conditions. For critical conductive applications, the final molded or extruded part should be tested rather than relying only on resin-level values.
Q10: Can you provide VESTAMID L-R3-EI BK TDS, SDS and COA?
Yes. Please send the required document type and application information through our Contact Page → or email ruiqingchem@gmail.com.
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For pricing, availability, technical documents or material-selection support for VESTAMID L-R3-EI BK, please provide your required quantity, destination, application, processing method and target electrical resistance where applicable.
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