Celanese Celanex® 2003-2 PBT, Unfilled

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Celanese Celanex® 2003-2 PBT, Unfilled
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes:	Celanex 2003-2 is a general purpose, unreinforced polybutylene terephthalate with a good balance of mechanical properties, processability, and good flow characterictics. Celanex 2003-2 is a medium high melt flow material that contains an internal lubrican To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-40°F (-40°C) at 250°F (121°C) for 4 hours. For subsequent storage of the material in the dryer until processed (<= 60 h) it is necessary to lower the temperature to 100° C. Information provided by Celanese Corporation.
Key Words:	Medium high flow, lubricated
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Physical Properties	Original Value	Comments

Specific Gravity	1.31 g/cc	ASTM D792
Density	1.31 g/cc	ISO 1183
Linear Mold Shrinkage, Flow	0.018 - 0.020 in/in	ASTM D955
	0.018 - 0.020 cm/cm	ISO 294-4
Melt Flow	35 g/10 min	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	79	ISO 2039-2
Tensile Strength, Yield	60.0 MPa	50mm/min; ISO 527-2/1A
	8100 psi @Temperature 22.8 °C	ASTM D638
Tensile Stress at Strain	9.44 MPa @Strain 0.37 %, Temperature 23.0 °C
	18.63 MPa @Strain 0.73 %, Temperature 23.0 °C
	27.42 MPa @Strain 1.1 %, Temperature 23.0 °C
	35.54 MPa @Strain 1.46 %, Temperature 23.0 °C
	42.87 MPa @Strain 1.83 %, Temperature 23.0 °C
	49.22 MPa @Strain 2.19 %, Temperature 23.0 °C
	54.19 MPa @Strain 2.56 %, Temperature 23.0 °C
	57.33 MPa @Strain 2.92 %, Temperature 23.0 °C
	58.65 MPa @Strain 3.29 %, Temperature 23.0 °C
	58.93 MPa @Strain 3.65 %, Temperature 23.0 °C
Elongation at Break	40 %	50mm/min; ISO 527-2/1A
	60 % @Temperature 22.8 °C	ASTM D638
Elongation at Yield	4.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2700 MPa	1mm/min; ISO 527-2/1A
Flexural Strength	80.0 MPa	ISO 178
	12000 psi @Temperature 22.8 °C	ASTM D790
Flexural Modulus	2550 MPa	ISO 178
	350000 psi @Temperature 22.8 °C	ASTM D790
Izod Impact, Notched	0.700 ft-lb/in @Temperature 22.8 °C	ASTM D256
Izod Impact, Notched (ISO)	4.00 kJ/m²	ISO 180/1A
Izod Impact, Unnotched (ISO)	63.0 kJ/m² @Temperature 23.0 °C	ISO 180/1U
Charpy Impact Unnotched	205 kJ/m²	ISO 179/1eU
	58.0 kJ/m² @Temperature -30.0 °C	ISO 179/1eU
Charpy Impact, Notched	4.30 kJ/m²	ISO 179/1eA
	4.30 kJ/m² @Temperature -30.0 °C	ISO 179/1eA

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+13 ohm-cm	IEC 60093
	1.00e+16 ohm-cm	ASTM D257
Surface Resistance	>= 1.00e+15 ohm	IEC 60093
Dielectric Constant	3.2 @Frequency 1e+6 Hz	ASTM D150
	3.2 @Frequency 1e+6 Hz	IEC 60250
	4.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	15.0 kV/mm	IEC 60243-1
Dissipation Factor	0.0020 @Frequency 1e+6 Hz	ASTM D150
	0.020 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	ISO 11359-2
Melting Point	225 °C	ISO 11357-1,-2,-3
	437 °F	ASTM D3418
Deflection Temperature at 0.46 MPa (66 psi)	150 °C	ISO 75-1, -2
	315 °F	ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	55.0 °C	ISO 75-1, -2
	126 °F	ASTM D648
Vicat Softening Point	190 °C	B50 (50°C/h 50N); ISO 306
Glass Transition Temp, Tg	60.0 °C	ISO 11357-1,-2,-3
Flammability, UL94	HB @Thickness 0.710 mm
Oxygen Index	22 %	ISO 4589

Processing Properties	Original Value	Comments
Processing Temperature	20.0 - 50.0 °C	hopper
	65.0 - 93.0 °C	cavity
Feed Temperature	230 - 240 °C
Zone 1	230 - 240 °C
Zone 2	235 - 250 °C
Zone 3	235 - 250 °C
Zone 4	240 - 260 °C
Die Temperature	250 - 260 °C
Melt Temperature	243 °C	ISO 294
	235 - 260 °C
Mold Temperature	48.0 °C	ISO 294
Injection Velocity	300 mm/sec	ISO 294
Drying Temperature	120 - 130 °C
Dry Time	4 hour
Moisture Content	0.020 %	Necessary low maximum
Injection Pressure	48.0 MPa	ISO 294
Hot-Working Temperature	250 - 260 °C

Descriptive Properties
Injection molding	Yes
Injection speed	medium-fast
Melt volume rate (MVR), cm³/10min	44
MVR test load, kg	2.16
MVR test temperature, °C	250
Processing conditions acc. ISO	7792-2

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