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Rulon Bearings

Avient Dynaflex™ G2780C Thermoplastic Elastomer (TPE)
Categories: Polymer; Thermoplastic; Elastomer, TPE

Material Notes: Dynaflex™ G2780C is an easy processing TPE designed for injection molding and extrusion applications that require FDA compliance. - Excellent Colorability - Good Ozone and UV Stability - Overmold Adhesion to Polypropylene - Rubbery Feel - Soft Touch

Dynaflex™ G2780C can be recycled as a filler or impact modifier for polyolefins, or can be recycled by grinding and reintroduction to the molding process. Similar to PP or PE recycling process, if separated appropriately, it can be recycled many times. Municipality waste stream recycle code is 7 which is designated for Other. Please contact GLS Thermoplastic Elastomers for a copy of our Recyclability Compliance letter.

Color concentrates with polypropylene (PP), ethylene vinyl acetate (EVA), or low density polyethylene (PE) carriers are most suitable for coloring Dynaflex™ G2780C. Improved color dispersion can be achieved by using higher melt flow concentrates (with a melt flow from 25 - 40g/10 min). Typical loadings for color concentrates are 1% to 5% by weight. Liquid color can be used, but mineral oil based carriers may have a significant effect on the final hardness value. Concentrates based on PVC should not be used. A high color match consistency can be obtained by using precolored compounds available from GLS. The final determination of color concentrate suitability should be determined by customer trials. Purge thoroughly before and after use of this product with a low flow (0.5 - 2.5 MFR) polyethylene (PE) or polypropylene (PP). Regrind levels up to 20% can be used with Dynaflex™ G2780C with minimal property loss, provided that the regrind is free of contamination. To minimize losses during molding, the melt temperature should remain as low as possible. The final determination of regrind effectiveness should be determined by the customer. The Dynaflex™ G2780C has excellent melt stability. Maximum residence times may vary, depending on the size of the barrel. Generally, the barrel should be emptied if it is idle for periods of 8 - 10 minutes or longer. Drying is not Required Injection Speed: 1 to 5 in/sec 1st Stage - Boost Pressure: 100 to 500 psi 2nd Stage - Hold Pressure: 70% of Boost Hold Time (Thick Part): 4 to 10 sec Hold Time (Thin Part): 1 to 3 sec

Information provided by PolyOne

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Physical PropertiesMetricEnglishComments
Specific Gravity 0.898 g/cc0.898 g/ccASTM D792
Viscosity 22000 cP
@Shear Rate 11200 1/s,
Temperature 200 °C
22000 cP
@Shear Rate 11200 1/s,
Temperature 392 °F
ASTM D3835
Linear Mold Shrinkage, Flow 0.0090 - 0.015 cm/cm0.0090 - 0.015 in/inASTM D955
Melt Flow  5.0 g/10 min
@Load 2.16 kg,
Temperature 190 °C
5.0 g/10 min
@Load 4.76 lb,
Temperature 374 °F
ASTM D1238
 16 g/10 min
@Load 5.00 kg,
Temperature 200 °C
16 g/10 min
@Load 11.0 lb,
Temperature 392 °F
ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 848410 sec; ASTM D2240
Tensile Strength at Break 8.27 MPa
@Temperature 23.0 °C
1200 psi
@Temperature 73.4 °F
Die C2 hr; ASTM D412
Tensile Stress at Strain  5.79 MPa
@Strain 100 %,
Temperature 23.0 °C
840 psi
@Strain 100 %,
Temperature 73.4 °F
Die C2 hr; ASTM D412
 7.86 MPa
@Strain 300 %,
Temperature 23.0 °C
1140 psi
@Strain 300 %,
Temperature 73.4 °F
Die C2 hr; ASTM D412
Elongation at Break 370 %
@Temperature 23.0 °C
370 %
@Temperature 73.4 °F
Die C2 hr; ASTM D412
Tear Strength 43.8 kN/m250 pliASTM D624
Compression Set 18 %
@Temperature 23.0 °C,
Time 79200 sec
18 %
@Temperature 73.4 °F,
Time 22.0 hour
ASTM D395B
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 132 - 171 °C270 - 340 °F
Middle Barrel Temperature 171 - 188 °C340 - 370 °F
Front Barrel Temperature 188 - 207 °C370 - 405 °F
Nozzle Temperature 188 - 207 °C370 - 405 °F
Mold Temperature 15.6 - 26.7 °C60.1 - 80.1 °F
Back Pressure 0.000 - 1.03 MPa0.000 - 149 psi
Screw Speed 40 - 100 rpm40 - 100 rpm
 
Compliance PropertiesMetricEnglishComments
FDA YesYes21 CFR 177.1210
 
Descriptive Properties
AppearanceTranslucent
FeaturesGood Colorability
 Good UV Resistance
 Ozone Resistant
 Recyclable Material
FormsPellets
Generic MaterialTPE
Generic NameThermoplastic Elastomer (TPE)
Processing MethodExtrusion
 Injection Molding
Regional AvailabilityAsia Pacific
RoHS ComplianceRoHS Compliant
Suggested Max Regrind20%
UsesBlow Molding Applications
 Consumer Applications
 Overmolding
 Personal Care
 Sheet
 Transparent or Translucent Parts

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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