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Untitled - Sciencemadness Dot Org

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5.3 Heat Capacity.<br />

5.4 Thermal Conductivity.l”<br />

Heat Capacity<br />

at Constant Pressure<br />

(Cal/g-“C)<br />

0.231 + 5.5 X 1O-4 T<br />

Conductivity<br />

(Cal/s-cm-“C)<br />

Temperature<br />

Range<br />

(“C)<br />

37 < T < 167<br />

Temperature<br />

(“C)<br />

1.2 x 10-a 25<br />

9.7 x 10-d 160<br />

5.6 Heats of Combustion and Formation at 25%k11<br />

AH; AH;<br />

kcal/mole kcal/mole<br />

-660.7 11.3<br />

5.7 Thermal Decomposition Kinetics.l*.<br />

Decomposition energy 500 Cal/g<br />

Activation energy 52.7 kcal/mole<br />

Pre-exponential factor 5 x 10lg/s<br />

5.8 Other Thermal Stability Test Results.<br />

Test Results<br />

Vacuum 0: l-O.4 ml/g of gas evolved<br />

after 48 h at 120°C<br />

DTA and pyrolysis See Fig. 2<br />

Critical temperature, Tm 253°C<br />

Charge radius, a 3.3 mm<br />

Density, p 1.81 g/cm*<br />

HMX<br />

47

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