| About |
|---|
| Texin 250 resin is an aromatic polyester-based thermoplastic polyurethane with a Shore hardness of approximately 50D. It is processed primarily by extrusion and blow molding but can also be used for injection molding.&& |
| Product Description | |
|---|---|
| Supplier | Covestro |
| Generic | TPU-酯 |
| Material Status | Commercial: Active |
| Features | Low speed solidification point,Good wear resistance,Grease resistance,Solvent resistance |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.22 | g/cm³ | ASTM D792 , ISO 1183 |
| Shrinkage rate | |||
| MD：2.54 mm | 0.80 | % | ASTM D955 |
| TD：2.54 mm | 0.80 | % | ASTM D955 |
| TD：2.54 mm | 0.80 | % | ISO 2577 |
| MD：2.54 mm | 0.80 | % | ISO 2577 |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | ASTM D412 , ISO 37 | ||
| yield | 46.2 | MPa | ASTM D412 , ISO 37 |
| 100% strain | 11.7 | MPa | ASTM D412 , ISO 37 |
| 300% strain | 31.7 | MPa | ASTM D412 , ISO 37 |
| Tensile strain | |||
| fracture | 400 | % | ASTM D412，ISO 37 |
| tear strength | |||
| — | 136 | kN/m | ASTM D624 |
| — | 140 | kN/m | ISO 34-1 |
| Compression deformation | ASTM D395B , ISO 815 | ||
| 23℃，22 hr | 15 | % | ASTM D395B，ISO 815 |
| 70℃，22 hr | 35 | % | ASTM D395B，ISO 815 |
| Basho’s elasticity | 25 | % | ASTM D2632 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Glass transition temperature | -20.0 | ℃ | DMA |
| Vicat Softening Temp | |||
| A50 | 115 | ℃ | ASTM D1525，ISO 306 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | ASTM D2240 , ISO 868 | ||
| Shaw’s A | 95 | ASTM D2240 , ISO 868 | |
| Shaw’s D | 50 | ASTM D2240 , ISO 868 | |
| Bending modulus | ASTM D790 , ISO 178 | ||
| 23℃ | 83.0 | MPa | ASTM D790 , ISO 178 |
| 70℃ | 36.0 | MPa | ASTM D790 , ISO 178 |
| Taber abraser | |||
| 1000 cycles, 1000 g, H-18 wheels | 70.0 | mg | ASTM D1044 |
| 1000 cycles, 1000 g, H-18 wheels | 70.0 | mg | ISO 4649 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Extrusion | Nominal value | Unit | Test method |
| Drying temperature – hot air dryer | 93 to 104 | °C | |
| Drying time – hot air dryer | 2.0 | hr | |
| Recommended maximum moisture content | 0.030 | % | |
| Proposed maximum recycled material ratio | 20 | % | |
| Barrel rear temperature | 190 to 210 | °C | |
| Barrel middle temperature | 190 to 215 | °C | |
| Barrel front temperature | 200 to 220 | °C | |
| Nozzle temperature | 205 to 225 | °C | |
| Processing (melt) temperature | 205 to 215 | °C | |
| Mold temperature | 15 to 40 | °C | |
| Injection pressure | 41.4 to 103 | MPa | |
| Injection speed | 慢to中等 | ||
| Back pressure | < 1.38 | MPa | |
| Screw speed | 40 to 80 | rpm | |
| Cushion | 3.18 | mm | |
| Drying temperature | 93 to 104 | °C | |
| Drying time | 2.0 | hr | |
| Barrel 1 zone temperature | 180 to 200 | °C | |
| Barrel 3 zone temperature | 180 to 205 | °C | |
| Barrel 5 zone temperature | 180 to 210 | °C | |
| Melt temperature | 190 to 205 | °C | |
| Nozzle temperature | 185 to 210 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Die C |
| 3. Post-cured 16 hr at 230°F |
| 4. Rate A (50°C/h), Loading 1 (10 N) |
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