DSC testing of TG value of mechanical nylon material

What is the glass transition temperature? The glass transition temperature (Tg) is an important characteristic parameter of high polymers, which refers to the temperature at which the glass state transitions to a highly elastic state. Glass transition is an inherent property of amorphous polymer materials and a macroscopic manifestation of the transformation of polymer motion forms. It directly affects the material's performance and processability, and has therefore been a major focus of polymer physics research for a long time. The glass transition temperature (Tg) is the lowest temperature at which molecular segments can move, and its height is directly related to the flexibility of the molecular chain. The greater the flexibility of the molecular chain, the lower the glass transition temperature; The high rigidity of molecular chains results in a high glass transition temperature.

The glass transition temperature testing method and experimental equipment calorimetry method are one of the main methods for testing the glass transition temperature. Using DSC as the column, as the temperature gradually increases, the baseline on the DSC curve shifts towards the endothermic direction when the glass transition temperature of the dry grouped polymer changes. DSC characterization of the glass transition temperature of materials measures the change in specific heat capacity with temperature. The specific heat capacity changes significantly before and after Tg, and the glass transition temperature can be determined based on the curve. The glass transition temperature is usually a step in the direction of heat absorption, and the glass transition is a region. This method usually uses the intersection point of a line and a curve that are equidistant from two extrapolated baselines as the glass transition temperature.

After the experiment,DZ-DSC300 Differential Scanning CalorimeterWe collected a DSC test curve and used the instrument's built-in analysis software to analyze the glass transition temperature. The Tg temperature we commonly refer to is the intersection point of the line and the curve that are equidistant from two extrapolated baselines.

　What are the performance advantages of DZ-DSC300 differential scanning calorimeter?

1. The temperature range is from room temperature to 600 degrees Celsius, with multiple temperature settings and a bidirectional automatic control system.

2. A brand new furnace structure, better resolution and baseline stability.

3. High precision, using imported chips for fast measurement speed.

4. Color touch screen display with high clarity and comprehensive information display.

5. Using hot melt technology instead of traditional spot welding technology results in higher sensitivity.