Measured Data

Specific Heat

Experiments for specific heat [J/(kg K)], or heat capacity, were conducted using a heat flow meter on unconditioned and dried samples at 10 °C, 20 °C, 30 °C and 40 °C.

Unconditioned

Temperature (C) Specific Heat Mean (J/kg-K) Standard Deviation (J/kg-K)
10.0 1392.0 16.0
20.0 1430.0 32.0
30.0 1528.0 17.0
40.0 1569.0 24.0

Dried

Temperature (C) Specific Heat Mean (J/kg-K) Standard Deviation (J/kg-K)
10.0 1116.0 21.0
20.0 1164.0 18.0
30.0 1216.0 23.0
40.0 1266.0 21.0

Thermal Conductivity

Experiments for thermal conductivity [W/(m K)] were conducted using a heat flow meter on unconditioned and dried samples at 15 °C and either 45 °C or 65 °C.

Unconditioned

Temperature (C) Conductivity Mean (W/m-K) Standard Deviation (W/m-K)
15.0 0.138 0.003
45.0 0.147 0.003

Dried

Temperature (C) Conductivity Mean (W/m-K) Standard Deviation (W/m-K)
15.0 0.123 0.003
45.0 0.129 0.003

Mass Loss Rate (MLR)

Initial-mass-normalized mass loss rate [1/s] was measured in the simultaneous thermal analyzer experiments at three heating rates: 3 K/min, 10 K/min, and 30 K/min and mass loss rate [g/s] in the cone calorimeter at three heat fluxes: 25 kW/m2, 50 kW/m2, and 75 kW/m2.

Cone Calorimeter Test Notes:
This material swells and warps into an arched shape during the fire's decay phase. This was observed in the first test (HF25_R1) and prevented in all subsequent tests by the use of tie wires. The source material is less wide than the required sample width for cone calorimeter tests, therefore each sample was comprised of two boards with the seam on center. Asymmetric burning and non-uniform post test conditions based on each half of the sample were observed in some tests, but no pattern has been determined. For individual test notes and select test pictures, follow the link above to Download raw data.

Simultaneous Thermal Analyzer

Cone Calorimeter: 25 kW/m2

Cone Calorimeter: 50 kW/m2