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 1268.0 510.0
20.0 1314.0 535.0
30.0 1363.0 648.0
40.0 1451.0 601.0

Dried

Temperature (C) Specific Heat Mean (J/kg-K) Standard Deviation (J/kg-K)
10.0 1220.0 209.0
20.0 1273.0 225.0
30.0 1320.0 239.0
40.0 1349.0 278.0

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 0.023 0.003
65.0 0.028 0.003

Dried

Temperature (C) Conductivity Mean (W/m-K) Standard Deviation (W/m-K)
15.0 0.020 0.003
65.0 0.025 0.003

Mass Loss Rate (MLR)

Mass loss rate [kg/s] was measured in cone calorimeter experiments at three heat fluxes: 25 kW/m2, 50 kW/m2, and 75 kW/m2.

This material shrivels under thermal exposure which reduces the exposed surface area during cone calorimeter tests. An edge frame was used to limit this behavior. A calcium silicate substrate was included beneath the samples.

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.

This material shrivels under thermal exposure which reduces the exposed surface area during cone calorimeter tests. An edge frame was used to limit this behavior. A calcium silicate substrate was included beneath the samples.

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.

This material shrivels under thermal exposure which reduces the exposed surface area during cone calorimeter tests. An edge frame was used to limit this behavior. A calcium silicate substrate was included beneath the samples.

Incident Heat Flux [kW/m²] Mean CO Yield [g/g] CO Yield Std. Dev. [g/g]
25 0.005 0.002
50 0.004 0.002
75 0.006 0.004

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.

Cone Calorimeter Test Notes:
This material shrivels under thermal exposure which reduces the exposed surface area during cone calorimeter tests. An edge frame was used to limit this behavior. A calcium silicate substrate was included beneath the samples.

Micro-scale Combustion Calorimeter

Value R1 R2 R3 Mean Std. Dev.
Heat of Combustion (MJ/kg) 13.55 12.98 13.22 13.25 0.23

Cone Calorimeter

Incident Heat Flux [kW/m²] Mean Effective Heat of Combustion [MJ/kg] Effective Heat of Combustion Std. Dev. [MJ/kg]
25 18.2 0.9
50 16.9 5.5
75 16.0 4.1

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 0.858 0.003
800.0 0.826 0.004
1000.0 0.790 0.006
1200.0 0.752 0.008
1400.0 0.717 0.011
1600.0 0.688 0.013
1800.0 0.664 0.015
2000.0 0.644 0.017