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Typus
Verschleierung
Bearbeiter
Klgn
Gesichtet
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Untersuchte Arbeit:
Seite: 64, Zeilen: 7 ff.
Quelle: Bhattacharya et al. 2008
Seite(n): 320, Zeilen: 3-17
The main thermal techniques are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), dynamic mechanical analysis (DMA) and heat distortion temperature (HDT). Thermal analysis is based on the detection of changes in the heat content (enthalpy) or the specific heat of a sample with temperature.

5.5.1. Differential Scanning Calorimetry (DSC)

Differential scanning calorimetry is a thermo-analytical method that measures the difference between the amount of heat necessary to raise the temperature of sample and reference. It is used to study thermal transitions of a polymer. As thermal energy is supplied to the sample, its enthalpy increase and the temperature rises by an amount determined by the specific heat of the sample. The specific heat of the material changes slowly with temperature in a particular physical state, but alter sharply or discontinuously when a change of the state of the matter takes place. Apart from increasing the sample temperature, the supply of thermal energy may also induce physical or chemical changes in the sample (e.g. melting or decomposition) accompanied by a change in enthalpy in the form of the latent heat of fusion, heat of reaction, or others. Such enthalpy changes may be detected by thermal analysis and can be related to the processes occurring in the sample.

The main thermal techniques are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), dynamic mechanical analyzer (DMA), heat distortion temperatures (HDT), and cone calorimetry. Thermal analysis is based on the detection of changes in the heat content (enthalpy) or the specific heat of a sample with temperature.

6.7.1 Differential Scanning Calorimetry (DSC)

DSC is a technique which is part of a group of techniques called thermal analysis (TA). As thermal energy is supplied to the sample, its enthalpy increases and the temperature rises by an amount determined by the specific heat of the sample. The specific heat of a material changes slowly with temperature in a particular physical state, but alters sharply or discontinuously when a change of state takes place. Apart from increasing the sample temperature, the supply of thermal energy may also induce physical or chemical changes in the sample (e.g., melting or decomposition) accompanied by a change in enthalpy in the form of the latent heat of fusion, heat of reaction, or others. Such enthalpy changes may be detected by thermal analysis and can be related to the processes occurring in the sample.

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(Klgn), SleepyHollow02

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