Heating rate effect

The next type of test is a heat rate effect evaluation. Here the sample is heat at various rates over the process range to define any effects on reaction initiation temperatures or kinetics. Figure 9 illustrates the effect of low rates allowing sufficient time for chemical reactions to change the process behavior. The higher heat rates indicate that no significant reaction products have had the opportunity to influence the process behavior. This type of information is useful for the engineering staff to set process boundary limits to maintain flow consistency. 

Figure 3.16 DSC thermograms showing particle size and heating rate effects.

The date for the TGA and DTG temperatures in Table 3-9 demonstrate, especially in the case of the DTG maximum temperatures, that at fast heating rates effects are taken over, and obscured, which are still present at slower heating rates. At heating rates exceeding 50 K/min only one sharp peak appears at 344 °C (50 K/min) or 383 °C (100 K/min)... 

Duran, R, Capel, F., Tartan, J., Gutierrez, D., Moure, C. Heating-rate effect on the BaTiOs formation by thermal decomposition of metal dtrate polymeric precursors. Solid State Ionics 141-142, 529-539 (2001)... 

PS-dj. instead of hydrogenous PS(PSH) of identical chain length allows the LOST of the blend PS-PVME to rise by about 35 C (Fig. 17). Additionally, one can notice that no heating rate effect is detected around... 

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