thermal degradation


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thermal degradation

[′thər·məl ‚deg·rə′dā·shən]
(chemistry)
Molecular deterioration of materials (usually organics) because of overheat; can be avoided by low-temperature or vacuum processing, as for foods and pharmaceuticals.
References in periodicals archive ?
Thermal degradation kinetics of the polymeric blends has been effectively studied by TGA [17], Thermal degradation of polymers has been studied by thermoanalytical kinetics to reveal the information about chemical reaction mechanism and to establish relationships between temperature, extent of conversion and process rate than that of thermally stimulated processes [13, 18].
Keywords: Wood extractives, thermogravimetric analysis, Liquidambar orientalis, storax wood, thermal degradation, natural fire retardants
Table 1 represents thermal degradation stages of untreated Phoenix sp.
However, this selection criterion must be combined with an automated toasting process capable of controlling thermal degradation of the oak tannin to achieve consistent and reproducible results.
The kinetics of the thermal degradation of polystyrene and polyethylene, J.
Previous materials of this kind have had to offer a compromise between piezoelectric activity and maximum operating temperature, with rapid thermal degradation taking place at temperatures above 200[degrees]C.
0 [+ or -] 5 mg and scans were performed from 20 to 600[degrees]C at 10[degrees]C/ min to observe thermal degradation and stability of each lignin based on its sources.
With typical glass temperatures during production of 446[degrees]F (230[degrees]C), silicone 'O'rings had a limited operating lifetime of days (one week maximum), due to the thermal degradation that occurs.
Among their topics are optimizing the self-ordering process of electropolishing the surface of high-purity aluminum, the preparation and experimental study of a composite phase change material for conserving building energy, and the thermal stability and thermal degradation kinetics of flame retardant epoxy resins.
Keywords Intumescent, Fireproof coating, Expanded vermiculite, Thermal degradation, Fire protection
4] particles may affect the thermal degradation of a polymer through improvement [22-26] or reduction [10,13,14,27,28] in thermal stability.