Thermogravimetric analyzer is an instrument that mainly uses thermogravimetry to detect the temperature-mass change relationship of substances. When the measured substance undergoes sublimation, vaporization, decomposition of gas or loss of crystal water during heating, the mass of the sample will change, and the corresponding thermogravimetric curve will be obtained. By analyzing the thermogravimetric curve, the mass change of the measured sample and the corresponding temperature and time point data can be obtained. The thermogravimetric data obtained through experiments are then analyzed to analyze and study their substances. Therefore, they are widely used in many fields. So what are the applications of thermogravimetric analyzer? In view of this problem, follow the exhibition instrument to understand.
The material properties often measured by the thermogravimetric analyzer include corrosion, high-temperature decomposition, solvent loss, oxidation/reduction reaction, hydration/dehydration, etc., so it is currently widely used in the research and development, process optimization and quality monitoring of plastics, rubber, coatings, pharmaceuticals, catalysts, inorganic materials, metal materials and composite materials and other fields.
1. Determination of metal and gas reaction. The reaction of metal and gas is a gas-solid phase reaction. The relationship between the mass change and temperature in the reaction process can be determined by thermogravimetric analysis, and the kinetic analysis of the reaction amount can be made.
2. Application in geology. The thermogravimetric curves of minerals show different characteristics due to their different compositions and structures. The mineral can be identified by comparing the initial temperature, peak temperature and peak area with the known mineral characteristic curve.
3. Application in polymer materials. Thermogravimetric analysis can evaluate the thermal stability of polyolefins, polyhalogenated olefins, oxygen-containing polymers, aromatic heterocyclic polymers, monomers, polymers and polymers, and elastomer polymer materials.
4. Application in environmental monitoring. For example, determine various changes in the environment, such as dehydration, decomposition and degradation of waste. Combined with other technologies to determine the total amount of carbon element and soluble and insoluble organic matter in suspended particles in the air.
5. Application in medicine. Determine the melting point, boiling point and purity of the drug through thermogravimetric analyzer.
6. Thermogravimetric analysis is used in combination with other methods. Thermogravimetric analysis is more widely used in combination with other non-thermal analysis methods. For example, the combination of thermogravimetric analyzer and mass spectrometry or infrared spectrometer can analyze the properties of the gas produced during the temperature change process online and characterize the type of substances.