Page 330 - Instrumentation Reference Book 3E

314 Chemical analysis: introduction

4
Pour
Pour

EZ
Oz
%E
*Q
4d
7s
0 -;
25
73
ierrnocouple
rmpensating cable
Figure15.15 Cupforthermalanalysisofcastiron. I
Time elapsed from pouring
Figure 15.1 6 Cooling profile during cooling of liquid cast
iron.

>alcium oxalate (a)

Calcium carbonate
In oxygen
Loss of
carbon monoxide 800 -
400 to 500" C - 600 $
Loss of m .-
carbon dioxide 2
700 to 800" C - 400 c
Vlagnesium oxalate - 200
(b)
0
Time
carbonate) (a) TG CURVES FOR A COAL SAMPLE IN OXYGEN
Magnesium oxide AND NITROGEN (FISHER TG SYSTEM)
Loss of carbon
monoxide and carbon
dioxide 400 to 500 " C

oxalates Calcium and
magnesium
Calcium carbonate
and magnesium
oxide
Temperature ("C)
Temperature (b) TG CURVES FOR (i) POLYHEXAFLUOROPROPYLENE,
(ii) POLYPROPYLENE, (iii) POLYETHYLENE, AND (iv)
Figure15.17 Weight-losscurvesfor calciumand POLYTETRAFLUOROETHYLENE (Du Pont TG SYSTEM)
magnesium oxalates and a precipitated mixture. Reproduced Figure 15.18 Thermal and therrno-oxidative stability of
by permission from Thermal Analysis byT Daniels, organic materials. Reproduced by permission from Thermal
published by Kogan Page Ltd. Analysis byT. Daniels, published by Kogan Page Ltd.