eFunda Polymers: Properties of Polyphenylene Oxide (modified) {alloy with polystyrene, 30% graphite fiber, EMI shielding (conductive)}
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Polyphenylene Oxide (modified)		  
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Additives: alloy with polystyrene, 30% graphite fiber
Application: EMI shielding (conductive)
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   7935  tensile   D638
Flexural Modulus (MPa)   7590   23 ºC   D790
Tensile Strength (MPa)  130 at break   D638
Compressive Strength (MPa)
at yield or break		  138     D695
Flexural Strength (MPa)
at yield or break		  166     D790
Elongation at break (%)   3     D638
Hardness  111  Rockwell R   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.7     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   11     D696
Deflection Temperature (ºC)  130   0.46 MPa   D648
 116   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.25   D792
Water Absorption (% weight increase)  0.04  after 24 hrs D570

 Processing Properties Conditions
Type ASTM
Processing Temperature (ºC)  260 - 316  injection molding  
Molding Pressure (MPa)   69 - 138    
Linear Mold Shrinkage (cm/cm)  0.001   D955

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Suppliers
ComAlloy International Co. Nashville, TN   
LNP Engineering Plastics, Inc. Exton, PA  800-854-8774
RTP Co. Winona, MN  800-433-4787

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