| About |
|---|
| DuPont™ Surlyn® 7940 is an ionomer of ethylene acid copolymer. This polymeric material can be processed in conventional extrusion and injection equipment designed to process polyethylene and ethylene copolymer type resins, to create various shapes and sheeting.&& |
| Product Description | |
|---|---|
| Supplier | DOW |
| Generic | EMA |
| Material Status | Commercial: Active |
| Features | Terpolymer |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 0.940 | g/cm³ | ASTM D792 , ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 2.6 | g/10min | ASTM D1238，ISO 1133 |
| Ionic type | Lithium | ||
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile impact strength | ASTM D1822 | ||
| -40℃ | 525 | kJ/m² | ASTM D1822 |
| 23℃ | 462 | kJ/m² | ASTM D1822 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Vicat Softening Temp | 63.0 | ℃ | ASTM D1525 , ISO 306 |
| Melting peak temperature | 91.0 | ℃ | ASTM D3418 , ISO 3146 |
| freezing point | |||
| — | 48 | ℃ | ASTM D3418 |
| — | 48 | ℃ | ISO 3146 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Haze | |||
| 6350 µm | 4.0 | % | ASTM D1003 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shaw’s D | 68 | ASTM D2240 , ISO 868 | |
| tensile strength | |||
| Yield, 23 ℃, molded | 15.2 | MPa | ASTM D638 |
| Fracture, 23 ℃ | 26.2 | MPa | ASTM D638 , ISO 527-2 |
| Tensile strain | |||
| Fracture, 23 ℃ | 290 | % | ASTM D638 , ISO 527-2 |
| Bending modulus | |||
| 23℃ | 420 | MPa | ASTM D790 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Processing (melt) temperature | 185 to 285 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Type IV, 2.0 in/min |
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