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Untitled - Sciencemadness Dot Org

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TATB<br />

5.2 Vapor Pressure.6<br />

A least squares fit to the data gives<br />

loglo P = 14.73 - 402 100/4.576 T(K)<br />

5.3 Heat Capacity.<br />

5.4 Thermal Conductivity.<br />

Temperature Vapor Pressure<br />

(“C)<br />

(mm Hg X 10’)<br />

129.3 4.06-4.10<br />

136.2 6.36-6.50<br />

150.0 10.41-11.02<br />

161.4 29.00-29.28<br />

166.4 42.09<br />

177.3 49.16<br />

Heat Capacity<br />

at Constant Pressure<br />

(Cal/g-%)<br />

0.215 + 1.324 X 1O-3 T<br />

Conductivity<br />

(Cal/s-cm-W)<br />

1.3 x 1o-3<br />

5.5 Coefficient of Thermal Expansion. ’ The TATB crystals are extremely<br />

anisotropic. The linear coefficient of expansion in the three unit cell directions has<br />

been estimated from the following x-ray data.<br />

156<br />

Cell Coeffkient of Expansion<br />

Direction WC)<br />

Temperature<br />

Range<br />

(“(2 ---<br />

; 9.50 2.10 x 1o-B 1o-5 -60 to +lOO $100<br />

C 2.25 X lo+ -60 to + 100

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