NOVA Chemicals Dylark® 238P20 High Performance Glass Filled Styrenic

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NOVA Chemicals Dylark® 238P20 High Performance Glass Filled Styrenic (discontinued **)
Categories:	Polymer; Thermoplastic; Polystyrene (PS)
Material Notes:	Very high modulus, High heat resistance, Excellent flow characteristics, Excellent adhesion to urethane Applications: Instrument panel substrates, consoles, Cluster housing, interior trim Injection Speed: Medium-Fast Information provided by NOVA Chemicals. INEOS NOVA began October 1 2007 as an expansion of the 50:50 joint venture between NOVA Chemicals and INEOS to include North American assets.
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Physical Properties	Metric	English	Comments

Density	1.22 g/cc	0.0441 lb/in³	ASTM D792
Filler Content	20 %	20 %	Glass Fiber
Water Absorption	0.11 %	0.11 %	ASTM D570
Linear Mold Shrinkage	0.0020 - 0.0040 cm/cm	0.0020 - 0.0040 in/in	NOVA
Melt Flow	0.60 g/10 min @Load 2.16 kg, Temperature 230 °C	0.60 g/10 min @Load 4.76 lb, Temperature 446 °F	Condition L; ASTM D1238

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	98.0 MPa	14200 psi	ASTM D638
Elongation at Break	1.9 %	1.9 %	ASTM D638
Tensile Modulus	7.70 GPa	1120 ksi	ASTM D638
Flexural Yield Strength	160 MPa	23200 psi	ASTM D790
Flexural Modulus	7.10 GPa	1030 ksi	ASTM D790
Poissons Ratio	0.345	0.345	ASTM D638
Shear Modulus	2.86 GPa	415 ksi	Calculated
Izod Impact, Notched	0.840 J/cm	1.57 ft-lb/in	ASTM D256

Thermal Properties	Metric	English	Comments
CTE, linear	48.0 µm/m-°C @Temperature 20.0 °C	26.7 µin/in-°F @Temperature 68.0 °F	NOVA
Deflection Temperature at 1.8 MPa (264 psi)	116 °C @Diameter 3.17 mm	241 °F @Diameter 0.125 in	bar; ASTM D648
Vicat Softening Point	123 °C	253 °F	ASTM D1525

Processing Properties	Metric	English	Comments
Processing Temperature	249 - 288 °C	480 - 550 °F	Profile Temperature
Melt Temperature	260 - 288 °C	500 - 550 °F	Air purge at equilibrium conditions
Mold Temperature	43.0 - 60.0 °C	109 - 140 °F	Mold surface temperature at equilibrium conditions
Back Pressure	0.345 - 0.689 MPa	50.0 - 100 psi
Screw Speed	80 - 125 rpm	80 - 125 rpm

**
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