| About |
|---|
| Vamac® ethylene acrylic elastomer, introduced in 1975, has been successfully used for many years in demanding automotive applications, where excellent resistance to heat, engine and transmission fluids or Blow-By is required. DuPont’s latest manufacturing technology allows production of enhanced AEM grades that are significantly improved compared to the existing standard Vamac® elastomers. These grades, designated and sold as Vamac® Ultra, provide a true step-change improvement in processability, performance and customer value for targeted applications. The new manufacturing technology has now also been applied to a new EMA Dipolymer, called VMX-2122.&& |
| Product Description | |
|---|---|
| Supplier | DuPont |
| Generic | AEM |
| Material Status | Commercial: Active |
| Features | Excellent Processability,High Viscosity,Good stripping performance,High Heat Resistance |
| Availabilitys | North America,Europe |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Mooney viscosity | |||
| ML 1+4，100℃ | 18 to 34 | MU | ASTM D1646 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shore A, 1 second, 6.00 mm | 79 | ASTM D2240 |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| fracture | 11.5 | MPa | ISO 37 |
| 100% strain | 7.00 | MPa | ASTM D412 |
| Tensile strain | |||
| fracture | 270 | % | ASTM D412 |
| tear strength | ISO 34-1 | ||
| — | 6.5 | kN/m | ISO 34-1 |
| — | 38 | kN/m | ISO 34-1 |
| Aging performance | Nominal value | Unit | Test method |
|---|---|---|---|
| The rate of change in tensile strength in air | ASTM D573 | ||
| 100℃，168 hr | 7.0 | % | ASTM D573 |
| 100% strain, 160 ℃, 168 hr | 22 | % | ASTM D573 |
| 175℃，168 hr | 2.0 | % | ASTM D573 |
| 100% strain, 175 ℃, 168 hr | 33 | % | ASTM D573 |
| The rate of change in ultimate elongation in air | ASTM D573 | ||
| 160℃，168 hr | -10 | % | ASTM D573 |
| 175℃，168 hr | -31 | % | ASTM D573 |
| The rate of change in hardness of a hardness tester in the air | ASTM D573 | ||
| Shaw A, 160 ℃, 168 hr | 4.0 | ASTM D573 | |
| Shaw A, 175 ℃, 168 hr | 5.0 | ASTM D573 | |
| The rate of change in tensile strength | ASTM D471 | ||
| 100 ℃, 168 hr, in IRM 903 oil | 3.0 | % | ASTM D471 |
| 100% strain, 100 ℃, 168 hr, in IRM 903 oil | 2.9 | % | ASTM D471 |
| Change rate of ultimate elongation | |||
| 100 ℃, 168 hr, in IRM 903 oil | -32 | % | ASTM D471 |
| The rate of change in Shore hardness | |||
| Support A, 100 ℃, 168 hr, in IRM 903 oil | -13 | ASTM D471 | |
| Quality change rate | |||
| 100 ℃, 168 hr, in IRM 903 oil | 16 | % | ASTM D471 |
| Volume change | |||
| 100 ℃, 168 hr, in IRM 903 oil | 27 | % | ASTM D471 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Glass transition temperature | -27.8 | ℃ | ASTM E1356 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| volatility | < 0.6 | wt% | Internal Method |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Method A, Trouser |
| 3. Method Ba, Angle (Unnicked) |
| 4. Plied |
| 5. 10°C/min |
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