| About |
|---|
| Vypet VNT 840 is a 40% glass/mineral reinforced PET injection molding compound designed for electrical and structural applications, with High Dielectric Strength. Features High temperature performance Excellent strength & high stiffness Excellent dimensional stability Typical Applications Electric motors Brackets Connectors&& |
| Product Description | |
|---|---|
| Supplier | Lavergne |
| Generic | PET |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Good Dimensional Stability,High Heat Resistance,HB |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.61 | g/cm³ | ISO 1183 |
| Shrinkage rate | ASTM D955 | ||
| MD：3.2 mm | 0.50 | % | ASTM D955 |
| TD：3.2 mm | 1.0 | % | ASTM D955 |
| Water absorption rate | |||
| 23℃，24hr | 0.060 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃ | 7.0 | kJ/m² | ISO 180 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 222 | ℃ | ISO 75-2/A |
| Melting temperature | |||
| DSC | 246 | ℃ | ISO 3146 |
| Linear coefficient of thermal expansion | ASTM E831 | ||
| MD：23~55℃ | 2.6E-5 | 1/℃ | ASTM E831 |
| TD：23~55℃ | 3.1E-5 | 1/℃ | ASTM E831 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | 1.7E+16 | ohms·cm | ASTM D257 |
| Dielectric strength | |||
| 23 ℃, 1.6 mm, in oil | 28 | kV/mm | ASTM D149 |
| Dielectric constant | |||
| 1 kHz | 3.80 | ASTM D150 | |
| Dissipation factor | |||
| 1 kHz | 8.0E-3 | ASTM D150 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | |||
| 3.20 mm | HB | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| R-level | 109 | ASTM D785 | |
| tensile strength | |||
| Fracture, 23 ℃ | 120 | MPa | ISO 527-2/5 |
| Bending modulus | 10500 | MPa | ISO 178 |
| bending strength | 177 | MPa | ISO 178 |
| compressive strength | 126 | MPa | ASTM D695 |
| shear strength | 49.0 | MPa | ASTM D732 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 120 | °C | |
| Drying time | 2.0 to 4.0 | hr | |
| Recommended maximum moisture content | 0.020 | % | |
| Barrel rear temperature | 260 to 270 | °C | |
| Barrel middle temperature | 265 to 275 | °C | |
| Barrel front temperature | 270 to 295 | °C | |
| Nozzle temperature | 275 to 300 | °C | |
| Processing (melt) temperature | 275 to 300 | °C | |
| Mold temperature | 75 to 120 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 3.2mm x 7.6mm x 12.6mm |
| 3. 0.079 in/min |
| 4. 0.051 in/min |
| 5. 500 V/sec |
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