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Ensinger PEI

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CIMBAR Gel Talc for Polyester Filler
Categories: Ceramic; Oxide; Other Engineering Material; Additive/Filler for Polymer

Material Notes: Gel Talc and Body Filler talc products are produced from high purity ore. Gel Talc and Body Filler products provide an excellent balance of color and mechanical properties for primary use in polyester compounds where consistent viscosity is critical and inherent low oil absorption provides higher filler loadings. Gel Talc and Body Filler talcs are platy, hydrophobic and non-abrasive.
Gel Talc is specifically designed for gel coats where excellent color, predictable viscosity and superior surface characteristics are required.

Information provided by Cimbar Performance Minerals.

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.78 g/cc
Bulk Density 23.0 lb/ft³Loose
 60.0 lb/ft³Tapped
Brightness 92 %Hunter Y, Rd value, dry
Oil Absorption 26 %g oil/100 g filler; ASTM D281
Fineness 5.0Hegman Fineness; ASTM D1210
Moisture Absorption at Equilibrium <= 0.30 %
Loss On Ignition 17 %
Particle Size 1.0 µm@ 10%
 5.5 µmD50
 27 µm@ 98%
pH 9.0
 
Mechanical PropertiesOriginal ValueComments
Hardness, Mohs 1.0
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.57
 
Component Elements PropertiesOriginal ValueComments
Al2O3 <= 1.0 %
CaO <= 13 %
Fe2O3 <= 1.0 %
MgO 24 %
SiO2 46 %

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