A. Schulman Premi-Glas® 1240-25 Fiberglass Reinforced Thermoset Thick Molding Compound

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A. Schulman Premi-Glas® 1240-25 Fiberglass Reinforced Thermoset Thick Molding Compound
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset
Material Notes:	Premi-Glas® 1240-25 is a fiberglass reinforced thermoset Thick Molding Compound for general purpose applications requiring thermal stability and stiffness. Key features and benefits are: Excellent stiffness to weight ratio, non-melting Good dimensional stability, including excellent thermal resistance Pigmentable for molded-in color; best appearance with mold texture Excellent property retention in cold and hot environments Good corrosion resistance except in acid environments. Designed for injection or compression molding in matched metal die molds. A. Schulman has acquired this former Premix product line.
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Physical Properties	Original Value	Comments

Specific Gravity	1.70 - 1.85 g/cc
Linear Mold Shrinkage	0.0015 - 0.0030 cm/cm	Polymerization Shrinkage

Mechanical Properties	Original Value	Comments
Tensile Strength	60.0 MPa	ASTM D638
Tensile Modulus	12.0 GPa	ASTM D638
Flexural Strength	150 MPa	ASTM D790
Flexural Modulus	11.0 GPa	ASTM D790
Compressive Strength	190 MPa	ASTM D695
Poissons Ratio	0.30
Shear Modulus	4.60 GPa	Calculated
Izod Impact, Notched	700 J/m	ASTM D256
Izod Impact, Unnotched	10.0 J/cm	ASTM D4812

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	35.0 µm/m-°C	Z Direction
CTE, linear, Transverse to Flow	25.0 µm/m-°C	XY Direction
Thermal Conductivity	0.300 W/m-K

Processing Properties	Original Value	Comments
Processing Temperature	150 °C	Injection or Compression Molding
Clamp Pressure	500 - 1000 psi	Molding Pressure

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PPREMH952 / 140350

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