1.1 This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen thickness to accelerate aging under control
ASTM
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
STD-86475
2012
2012-03-01
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