Scanning calorimeter (DSC) is the core equipment for material thermal performance testing. It can accurately determine the thermal effect of materials during temperature changes, providing key data support for enterprise R & D and quality control. The core testing content is as follows:

Determination of material phase transition temperature

The scanning calorimeter can clearly capture the glass transition temperature, melting point, crystallization temperature and other key phase transition temperatures of materials. For example, in the development of plastics, by measuring the glass transition temperature, the temperature resistance of materials can be accurately controlled to avoid deformation and failure of products in high temperature environments; when metal materials are tested, clear melting point parameters can ensure the accuracy of the material melting process and ensure product purity and performance standards.

Measurement of reaction heat and enthalpy change

The instrument can accurately measure the heat released or absorbed when a material undergoes chemical reactions and physical changes, that is, reaction heat and enthalpy change. In the research and development of lithium battery materials, by measuring the reaction heat of electrode materials, the charge and discharge stability of the battery can be evaluated to prevent the risk of thermal runaway. In the chemical industry, measuring the reaction enthalpy change can optimize the reaction process parameters, improve production efficiency and safety, and reduce energy consumption.

III. Material purity and stability assessment

The scanning calorimeter can evaluate the purity and stability of the material through the shape and data of the heat flow curve. The higher the purity of the material, the smoother the heat flow curve and the sharper the phase transition peak; the better the stability of the material, the smoother the thermal effect change. This function is particularly important in drug quality testing, which can quickly detect drug impurities, ensure that the purity of the drug meets national standards, and ensure the safety of medication.

Fourth, solidification degree and crosslinking degree analysis

For polymer materials such as resin and rubber, the scanning calorimeter can analyze the degree of curing and the degree of crosslinking of the material. By measuring the area of the exothermic peak of the curing reaction, the curing rate can be accurately calculated to ensure that the material achieves the best mechanical properties; the degree of crosslinking analysis can evaluate the aging resistance and solvent resistance of the material, help enterprises optimize the production process and improve the durability of the product.

The detection scope of the scanning calorimeter covers the entire process of material development, production, and quality inspection. Whether it is the performance verification of new material development or the quality control of finished products, it is inseparable from its accurate detection and is an indispensable testing tool in the field of materials.