Glass transition temperature refers to the temperature at which a material transitions from a high-elastic state to a glassy state, and vice versa. It is one of the characteristic temperatures of high molecular polymers. With the glass transition temperature as the boundary, high molecular polymers exhibit two forms: plastic and rubber.
Testing Methods
Thermal analysis (currently the most precise method): DSC method, DMA method, TMA method. Among them, the DMA method is the most sensitive, and the DSC method is the most convenient.
Instrument Technical Parameters
- DSC temperature range: -60～300℃
- DMA temperature range: -100～450℃
- TMA temperature range: -60～450℃
- Temperature accuracy: ± 0.01℃
Sample Submission Requirements and Precautions
Please refer to the corresponding equipment introduction.
Test Examples
Reference Standards
- ISO 11357-2:1999: Plastics - Differential Scanning Calorimetry (DSC) - Part 2: Determination of Glass Transition Temperature
- GB/T 29611-2013: Raw Rubber - Determination of Glass Transition Temperature - Differential Scanning Calorimetry (DSC)
- GB/T 33061.11-2022: Plastics - Determination of Dynamic Mechanical Properties - Part 11: Glass Transition Temperature
- GB/T 22567-2008: Electrical Insulating Materials - Test Methods for Determination of Glass Transition Temperature
- DB44/T 2045-2017: Determination of Glass Transition Temperature of Synthetic Resin Emulsions
