Custom DTA

Schematic diagram of a high-pressure custom DTA apparatus (courtesy of Y. Maeda) 

DTA heating curves of polyethylene recorded at various pressures. (1) 0.1, (11) 200, 

DTA systems capable of measuring large amounts of sample ( lOOg) have been constructed to analyse inhomogeneous samples such as refuse, agricultural products, biowaste and composites. 

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Many DTA instruments are constructed by individual researchers to carry out experiments under specialized conditions, such as high pressure and/or high temperature. Figure 2.3 shows an example of a high-pressure custom DTA instrument. The pressure medium used is dimethylsilicone (up to 600 MPa) or kerosene (up to 1000 MPa) and the pressure is increased using a mechanical or... 

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