Using isothermal microcalorimetry for the prediction and testing of long-term properties of materials and products

Autor: L. G. Svensson
Rok vydání: 1997
Předmět:
Zdroj: Journal of thermal analysis. 49:1017-1023
ISSN: 1572-8943
0022-5215
Popis: The use of isothermal microcalorimetry (MC) as a sensitive monitor for slow reactions is demonstrated in a number of examples. In Example 1 the spontaneous decomposition of a nitrate ester propellant is studied and the absolute degradation rate estimated. Example 2 illustrates how MC can be used for comparing the rate of oxidative ageing at different O2 concentrations. Synergetic effects between oxygen and moisture in accelerated ageing of nitrile rubber are evaluated from a so-called 4-point test in Example 3. The last example shows a simple MC technique for rapid determination of moisture permeability through a polymeric sealant.
Databáze: OpenAIRE