Differential Scanning Calorimeter
Differential scanning calorimeter is an intelligent, compact and low cost thermal analysis instrument. QT –DSC Calorimeters can determine oxidation induction time of polyethylene, curing percentage of epoxy, anti-oxide of lubricant , enthalpy change of material and partial enthalpy change, glass transition temperature, extrapolated onset temperature and melting point for crystalline polymer, quality control of engineering thermoplastics, polyethylene/polypropylene blend and copolymer etc.
Differential scanning calorimeter adopts thermo analytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Thermal Analysis is based upon the detection of changes in the heat content (enthalpy) or the specific heat of a sample with temperature.
Applying this technique, the sample to be measured and the reference sample are placed inside a crucible which is then placed inside the measurement cell (furnace) of the DSC system. By applying a controlled temperature program (isothermal, heating or cooling at constant rates), caloric changes can be characterized.
Two models QT-DSC –A1 and QT-DSC-A2 are available The A1 model is for determining the oxidation induction time of polyethylene, curing percentage of epoxy, anti oxide of lubricants etc. whereas the A2 model is ideally suited for determining the enthalpy change of material and partial enthalpy change, glass transition temperature, extrapolated onset temperature and melting point for crystalline polymer, quality control of engineering thermoplastics, polyethylene/polypropylene blend and copolymer etc.
The platinum electric resistance in the temperature controller ensures accuracy of the constant temperature to reach 0.1°C.
Rapid analyses, easy handling and high significance for research, development and quality control are the main advantages of this analytical technique. The QT series differential scanning calorimeter mainly consists of the heating furnace, host, μV amplifier, A/D converter, the μ V-mW energy converter software, the data sampling system, optional computer and printer.
Technical Specification
| Measuring Range | ± 10, ± 20, ± 40, ± 100, ± 160, ± 200 mW |
| Temperature Range | Room temperature to 500℃. |
| Temperature program rate | 1-99℃. /min |
| Heating rate | 1-30℃. /min |
| Gas Flow | ≤ 200 ml ∕ min (nitrogen or oxygen gas channel can change each other) |
| Gas Pressure | 0.2MPa |
| Power | 110V, 60Hz |
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