Unitika U-8400H

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Unitika U-8400H
Categories:	Polymer; Thermoplastic; Polyarylate
Material Notes:	U series resins are polymer alloys that are improved in resistance to oils and chemicals, the shortcoming of amorphous resins. They are transparent and have a greater moisture blocking property than other resins having similar structures. They are also suitable for blow molding. Characteristics: Transparent, resistant to chemicals, especially to oils, alcohols and others Weather Resistance Blended into PET resins for improvement in heat resistance. Information provided by Unitika Ltd.
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Physical Properties	Original Value	Comments

Density	1.28 g/cc	ASTM D792
Water Absorption	0.12 % @Thickness 3.17 mm, Time 86400 sec	ASTM D570
Linear Mold Shrinkage, Flow	0.0080 cm/cm @Thickness 3.00 mm

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	120	ASTM D785
Tensile Strength at Break	88.0 MPa	ASTM D638
Elongation at Break	170 %	ASTM D638
Flexural Strength	95.0 MPa	ASTM D790
Flexural Modulus	2500 MPa	ASTM D790
Compressive Strength	80.0 MPa	ASTM D695
Izod Impact, Notched	69.0 J/m @Thickness 3.17 mm	ASTM D256

Electrical Properties	Original Value	Comments
Volume Resistivity	2.00e+14 ohm-cm	ASTM D257
Dielectric Constant	3.0 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	762 V/mil	ASTM D149
Dissipation Factor	0.010 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	120 sec	ASTM D495

Thermal Properties	Original Value	Comments
CTE, linear	64.0 µm/m-°C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	95.0 °C	ASTM D648

Processing Properties	Original Value	Comments
Rear Barrel Temperature	230 - 250 °C
Middle Barrel Temperature	240 - 260 °C
Front Barrel Temperature	250 - 270 °C
Nozzle Temperature	250 - 270 °C
Mold Temperature	50.0 - 70.0 °C	actual surface temp
Drying Temperature	100 °C
Dry Time	10.0 - 24.0 hour
Back Pressure	0.490 - 1.47 MPa	gage pressure

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PUNITIK885 / 177905

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