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Untitled - Sciencemadness Dot Org

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5. THERMAL PROPERTIES<br />

5.1 Phase Change.<br />

,<br />

5.3 Heat Capacity.<br />

Material<br />

Type<br />

Temperature<br />

(“Cl<br />

Solid-to-liquid 245-250*<br />

--------- .<br />

“Melting is usually preceded by decomposi-<br />

tion, which is very rapid in the liquid<br />

phase.<br />

Heat Capacity at<br />

Constant Pressure<br />

W/g-T)<br />

Temperature Range<br />

PC)<br />

LBD NQ” 0.242 + 0:OOll T(“C) 37 < T < 167<br />

HBD NQb (3.269 + 0.0007 T( “C) 37 < T < 167<br />

“Low-bulk density, in accordance with material specif’ication MU,-N-494A.<br />

bHigh-bulk density NQ recrystallized f’rom water, median particle diameier -300 pm.<br />

5.4 Thermal Conductivity.<br />

Material<br />

Density Conductivity<br />

(s/cm*)<br />

(cal/cm-s-°C)<br />

Temperature Range<br />

(W<br />

LBD NQ 1.65 10.1 x 10-4 25 < T < 50<br />

1.69 9.8 x,10-’ 25 < T < 50<br />

NQ<br />

55

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