Celanese Coolpoly® D4302 Thermally Conductive Polybutylene Terephthalate

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Celanese Coolpoly® D4302 Thermally Conductive Polybutylene Terephthalate
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes:	CoolPoly D series of thermally conductive plastics transfers heat, a characteristic previously unavailable in injection molding grade polymers. CoolPoly is lightweight, netshape moldable and allows design freedom in applications previously restricted to metals. The D series is electrically non-conductive and can be used for its dielectric properties. CoolPoly D4302 is a thermally conductive injection molding resin based on a PBT matrix. CoolPoly D4302 is electrically insulative. Thermally conductive polymers like CoolPoly D4302 cool faster than standard injection molding grade resins. Information provided by Cool Polymers, Inc.
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Physical Properties	Metric	English	Comments

Density	1.47 g/cc	0.0531 lb/in³	ISO 1183
Linear Mold Shrinkage	0.0070 - 0.010 cm/cm	0.0070 - 0.010 in/in	ASTM D551

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	42.0 MPa	6090 psi	ISO 527-1
Elongation at Break	1.45 %	1.45 %	ISO 527-1
Tensile Modulus	6.00 GPa	870 ksi	ISO 527-1
Flexural Strength	61.0 MPa	8850 psi	ISO 178
Flexural Modulus	3.40 GPa	493 ksi	ISO 178
Charpy Impact Unnotched	2.40 J/cm²	11.4 ft-lb/in²	ISO 179-1
Charpy Impact, Notched	0.280 J/cm²	1.33 ft-lb/in²	ISO 179-1

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.31 J/g-°C	0.313 BTU/lb-°F	ASTM E1461
Thermal Conductivity	2.60 W/m-K	18.0 BTU-in/hr-ft²-°F	ASTM E1461

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	200 - 210 °C	392 - 410 °F
Middle Barrel Temperature	204 - 227 °C	399 - 441 °F
Front Barrel Temperature	216 - 238 °C	421 - 460 °F
Melt Temperature	216 - 238 °C	421 - 460 °F
Mold Temperature	27.0 - 66.0 °C	80.6 - 151 °F
Drying Temperature	82.0 °C	180 °F
Dry Time	4 hour	4 hour
Dew Point	-18.0 °C	-0.400 °F
Injection Pressure	35.0 - 82.0 MPa	5080 - 11900 psi
Hold Pressure	14.0 - 28.0 MPa	2030 - 4060 psi
Back Pressure	0.000 - 0.350 MPa	0.000 - 50.8 psi
Screw Speed	40 - 100 rpm	40 - 100 rpm

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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