Polynt SMC 3381 RF Sheet Molding Compound

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Polynt SMC 3381 RF Sheet Molding Compound
Categories:	Polymer; Thermoset; Polyester, TS
Material Notes:	SMC 3381 RF is a sheet molding compound based on an unsaturated polyester resin, fire retardant grade, halogen-free, reinforced with glass fibers. This SMC has been developed for electrical application. SMC 3381 RF joint good mechanical properties and good fire protection grade. SMC 3381 RF complies with UNI CEI 11170-3. SMC 3381 RF is formulated according to RoHS, REAC regulation (SVHC) and WEEE European legislation. Information provided by Polynt Composites.
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Physical Properties	Original Value	Comments

Density	1.75 g/cc	ISO 1183
Filler Content	25 %	Glass; ISO 11667
Water Absorption	<= 0.20 %	ISO 62 Met. 1
Linear Mold Shrinkage	0.0010 cm/cm	ISO 2577

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	80	ISO 2039-2
Flexural Strength	150 MPa	ISO 14125A
Flexural Modulus	9500 MPa	ISO 14125A
Charpy Impact Unnotched	70.0 kJ/m²	ISO 179

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	IEC 93
Surface Resistance	1.00e+14 ohm	IEC 93
Dielectric Strength	>= 18.0 kV/mm	IEC 243
Arc Resistance	>= 180 sec	ASTM D 495

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	>= 200 °C	ISO 75
Flammability, UL94	V-0 @Thickness 3.00 mm
Glow Wire Flammability Index	960 °C	IEC 695-2-1

Processing Properties	Original Value	Comments
Mold Temperature	140 - 160 °C
Hold Pressure	1015 - 1595 psi	Molding pressure

Descriptive Properties
Molding time	40 s/mm

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PPOLYN9107 / 231702

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