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 1481.0 11.0
20.0 1546.0 12.0
30.0 1616.0 14.0
40.0 1673.0 14.0

Dried

Temperature (C) Specific Heat Mean (J/kg-K) Standard Deviation (J/kg-K)
10.0 1140.0 37.0
20.0 1184.0 40.0
30.0 1235.0 47.0
40.0 1273.0 39.0

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 0.173 0.006
45.0 0.182 0.006

Dried

Temperature (C) Conductivity Mean (W/m-K) Standard Deviation (W/m-K)
15.0 0.100 0.003
45.0 0.109 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.

Simultaneous Thermal Analyzer

Cone Calorimeter: 25 kW/m2

Cone Calorimeter: 50 kW/m2

Cone Calorimeter: 75 kW/m2

Heat Release Rate Per Unit Area (HRRPUA)

Experiments for heat release per unit area [kW/m2] were conducted on samples conditioned at 20°C and 50% relative humidity using a cone calorimeter at three different heat fluxes: 25 kW/m2, 50 kW/m2, and 75 kW/m2.

Cone Calorimeter: 25 kW/m2

Cone Calorimeter: 50 kW/m2

Cone Calorimeter: 75 kW/m2

Carbon Monoxide (CO) Yield

Carbon monoxide yield was measured during cone calorimeter experiments conducted at heat fluxes of 25 kW/m2, 50 kW/m2, and 75 kW/m2.

Incident Heat Flux [kW/m²] Mean CO Yield [g/g] CO Yield Std. Dev. [g/g]
25 0.017 0.001
50 0.01 0.0
75 0.024 0.029

Specific Heat Release Rate

Experiments for specific heat release rate [W/g], were conducted using a micro-scale combustion calorimeter at a heating rate of 30 K/min.

Derived Data

Effective Heat of Combustion (Δhc)

Effective heat of combustion [MJ/kg] is calculated from data collected in both micro-scale combustion calorimeter experiments and cone calorimeter experiments.

Micro-scale Combustion Calorimeter

Value R2 R3 R4 Mean Std. Dev.
Heat of Combustion (MJ/kg) 11.67 11.24 10.89 11.27 0.32

Cone Calorimeter

Incident Heat Flux [kW/m²] Mean Effective Heat of Combustion [MJ/kg] Effective Heat of Combustion Std. Dev. [MJ/kg]
25 12.8 0.2
50 14.9 0.3
75 16.2 2.8

Band Averaged Emissivity

Band averaged emissivity was calculated from reflectance measurements conducted with an integrating sphere and Fourier transform infrared spectrometer.

Source Temperature [K] Emissivity Std. Dev.
600.0 0.956 0.001
800.0 0.945 0.001
1000.0 0.921 0.003
1200.0 0.889 0.005
1400.0 0.856 0.007
1600.0 0.827 0.010
1800.0 0.801 0.013
2000.0 0.779 0.015