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Main Index > Markets > Horticultural Applications > Perlite/Silicate Composits > Typical Properties


Perlite/Silicate Composites for High Temerature Insulation and Formed Shapes
Original Report by: Bruce Schundler

TYPICAL PROPERTIES OF PERLITE/SODIUM SILICATE COMPOSITES
Thermal Conductivity (ASTM C-177, C-325) at a mean temp. 250 F (120 C) 0.40 BTU.in/h.ft2.F0 (0.058 W/m.K)
Thermal Conductivity (ASTM C-177, C-325) at mean temp. 450 F (230 C) 0.56 BTU.in/h.ft2.F0 (0.081 W/m.K)
Thermal Conductivity (ASTM C-177, C-325) at mean temp. 6600F (3500C) 0.65 BTU.in/h.ft2.F0 (0.094 W/m.K)
Thermal Limit (ASTM C-447) 12000F (6500C)
Density(ASTM C-447) 11-16 lb/ft3 (180-260 kg/m3)
Modulus of Rupture (ASTM C-203,C-446) minimum 50-60 lbs/in2 (0.34-0.41 N/mm2
Compressive Strength(ASTM C-165) minimum 75-88 lbs/in2 (0.52-0.61 N/mm2
Linear Shrinkage (ASTM C-356) less than 2% at 1200 0
Water Absorption under 10% by volume after 24 hours

 

Technical data given herein are from sources considered reliable, but no guarantee of accuracy can be made or liability assumed.  Your supplier may be able to provide you with more precise data.  Certain compositions or processes involving perlite may be the subject of patents.

Information given herein is from sources considered reliable, but no guarantee of accuracy can be made or liability assumed.  Your supplier may be able to provide you with more precise data.  Certain compositions or processes involving perlite may be the subject of patents.
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