| About |
|---|
| Eastman is pleased to announce the launch of DRYSTAR* copolyesters. This new product-line is designed to meet the needs of converters seeking value-added solutions to their drying requirements of copolyesters. Eastman?s copolyesters are highly valued for their excellent balance of properties such as superior aesthetics, impact strength, and chemical resistance. These properties can be optimally realized when the resins are properly dehydrated in accordance to recommended drying conditions and equipment. Recognizing this value, Eastman conceived Drystar™ copolyesters to allow converters with limited access to desiccant dryers to achieve these optimizations. In addition, some converters with desiccant dryers may still find Drystar™ copolyesters value-adding to attain production flexibility and cost saving by removing the drying process prior to injection molding, profile extruding, or extrusion blow molding copolyesters. The initial launch comprises of the commercialization of four grades of Drystar™ copolyesters and Eastman has on-going program to extend this strategic product-line in the future. *DRYSTAR is only available in the Asia Pacific Region.&& |
| Product Description | |
|---|---|
| Supplier | Eastman |
| Generic | PCTG |
| Material Status | Commercial: Active |
| Features | Good surface appearance,High impact resistance,Solvent resistance |
| Availabilitys | Asia Pacific |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.27 | g/cm³ | ASTM D792 |
| Shrinkage rate | |||
| MD：3.2 mm | 0.20 to 0.50 | % | ASTM D955 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| -40℃ | 40 | J/m | ASTM D256 |
| 23℃ | 110 | J/m | ASTM D256 |
| -40℃ | 4.4 | kJ/m² | ISO 180 |
| 23℃ | 9.4 | kJ/m² | ISO 180 |
| Notched impact strength of cantilever beam | ASTM D4812 | ||
| -40℃ | 无断裂 | ASTM D4812 | |
| 23℃ | 无断裂 | ASTM D4812 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 70.0 | ℃ | ASTM D648，ISO 75-2/B |
| 1.8 MPa, unannealed | 62.0 | ℃ | ASTM D648，ISO 75-2/A |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Transmittance | 90.0 | % | ASTM D1003 |
| Haze | 0.20 | % | ASTM D1003 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| R-level | 108 | ASTM D785 | |
| Tensile modulus | |||
| 23℃ | 2030 | MPa | ASTM D638 |
| 23℃ | 2000 | MPa | ISO 527-2 |
| tensile strength | |||
| Yield, 23 ℃ | 50.0 | MPa | ASTM D638 |
| Yield, 23 ℃ | 48.0 | MPa | ISO 527-2 |
| Fracture, 23 ℃ | 30.0 | MPa | ASTM D638 |
| Fracture, 23 ℃ | 29.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| Yield, 23 ℃ | 4.4 | % | ASTM D638 |
| Yield, 23 ℃ | 4.0 | % | ISO 527-2 |
| Fracture, 23 ℃ | 180 | % | ASTM D638 |
| Fracture, 23 ℃ | 200 | % | ISO 527-2 |
| Bending modulus | |||
| 23℃ | 2060 | MPa | ASTM D790 |
| 23℃ | 2100 | MPa | ISO 178 |
| bending strength | |||
| 23℃ | 68.0 | MPa | ASTM D790 |
| 23℃ | 67.0 | MPa | ISO 178 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 71 | °C | |
| Drying time | 6.0 | hr | |
| Processing (melt) temperature | 249 to 271 | °C | |
| Mold temperature | 16 to 38 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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