Plaslok 5440 Black General Purpose Phenolic Molding Compound

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Plaslok 5440 Black General Purpose Phenolic Molding Compound (discontinued **)
Categories:	Polymer; Thermoset; Phenolic
Material Notes:	Plaslok Corporation was purchased by Plastics Engineering Company (maker of Plenco brand materials) in March 2000. The Plaslok name is no longer in use. Plaslok 5440 is the replacement material for the former Union Carbide BMRS-5440. It is a two-stage, phenolic molding compound that has been successfully formulated to accommodate a very wide range of molding situations. Because of its balance of physical and electrical properties it has found use in a variety of applications including knobs, circuit breaker cases and wiring devices. Data provided by Plaslok Corporation.
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Physical Properties	Original Value	Comments

Density	1.40 g/cc	ASTM D792
Apparent Bulk Density	0.600 g/cc	ASTM D1895
Water Absorption	0.30 %	ASTM D570
Linear Mold Shrinkage	0.0060 cm/cm	Compression; ASTM D955

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	45.0 MPa	ASTM D638
Flexural Yield Strength	59.0 MPa	ASTM D790
Flexural Modulus	6.90 GPa	ASTM D790
Compressive Yield Strength	207 MPa	ASTM D695

Electrical Properties	Original Value	Comments
Electrical Resistivity	2.00e+12 ohm-cm	ASTM D257
Dielectric Constant	5.4 @Frequency 1e+6 Hz	ASTM D150
	9.0 @Frequency 60 Hz	ASTM D150
Dielectric Strength	13.0 kV/mm	ASTM D149
Dissipation Factor	0.050 @Frequency 1e+6 Hz	ASTM D150
	0.20 @Frequency 60 Hz	ASTM D150
Comparative Tracking Index	210 V	UL 746

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	177 °C	ASTM D648
UL RTI, Electrical	150 °C @Thickness 1.47 mm
UL RTI, Mechanical with Impact	150 °C @Thickness 1.47 mm
UL RTI, Mechanical without Impact	150 °C @Thickness 1.47 mm
Flammability, UL94	V-0 @Thickness 3.05 mm
	V-0 @Thickness 3.05 mm
Oxygen Index	28.2 %	ASTM D2863

**
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