Technical Data Sheet
Eastar™ DG021 Glass Filled Polyester
Key Attributes
Contact clarity
Ease of processing
Excellent hydrolytic stability
Good chemical resistance
Good heat resistance
Good toughness
Increased modulus or stiffness
Product Description
Eastar™ copolyester DG021 is a glass-reinforced amorphous copolyester that provides increased modulus and strength versus unreinforced versions. Eastar™ copolyester DG021 contains 20% glass fiber as well as a mold release agent derived from vegetable based sources. Its most outstanding features are excellent chemical resistance, toughness, heat resistance, contact clarity, ease of processing, hydrolytic stability, and increased modulus or stiffness. These features give molded products improved modulus and strength in applications that are exposed to certain chemicals, aggressive cleaners, and disinfectants. Contact clarity is also advantageous for secondary operations such as laser welding.
Typical Properties
Property
a
Test Method
b
Typical Value, Units
c
General Properties
% Glass Fiber
20
Specific Gravity
D 792
1.37
Mold Shrinkage
D 955
0.001 mm/mm
Mechanical Properties
Tensile Stress @ Yield
D 638
100 MPa
Tensile Stress @ Break
D 638
96 MPa
Elongation @ Yield
D 638
3 %
Elongation @ Break
D 638
4 %
Tensile Modulus
D 638
5486 MPa
Flexural Modulus
D 790
5360 MPa
Flexural Yield Strength
D 790
141 MPa
Rockwell Hardness, R Scale
D 785
115
Izod Impact Strength, Notched
@ 23°C
D 256
97 J/m
Impact Strength, Unnotched
@ 23°C
D 4812
946 J/m
Optical Properties
Total Transmittance
D 1003
80 %
Haze
D 1003
72 %
Thermal Properties
Deflection Temperature
@ 0.455 MPa
D 648
81 °C
@ 1.82 MPa
D 648
77 °C
Typical Processing Conditions
Drying Temperature
71 °C (160 °F)
Drying Time
6 hrs
Processing Melt Temperature
259-271 °C (498-520 °F)
Mold Temperature
26-38 °C (79-100 °F)
a
Unless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
b
Unless noted otherwise, the test method is ASTM.
c
Units are in SI or US customary units.
Comments
Properties reported here are based on limited testing. Eastman makes no representation that the material in any particular shipment will conform to the values given.
Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.
2/28/2018 11:35:39 AM