Calorimetric Analysis DSC & DTA

Calorimetric Analysis DSC & DTA

Alfa Chemistry provides you with calorimetric analysis services including DSC and DTA, which are used to measure the heat changes accompanying various physical or chemical processes and help you analyze the changes that occur in flame retardant materials at high temperatures.


What Can We Do?

Relying on experienced materials chemists and advanced laboratory equipment, Alfa Chemistry provides calorimetric analysis services to customers with the following research and development needs:

  • We can measure a variety of thermodynamic and kinetic parameters such as specific heat capacity, heat of reaction, heat of transition, phase diagram, reaction rate, crystallization rate, polymer crystallinity, sample purity, curing, oxidative stability, and more.
  • We study the compatibility of the individual components of the mixture, such as the compatibility of the flame retardant with the matrix material.
  • We use calorimetric analysis to assist in the development, process optimization and quality control of flame retardant materials.
  • We use calorimetric analysis to synergistically study the flame retardant mechanism of flame retardant materials.

During the research and development process, our material chemists will fully communicate with customers to understand your unique needs and ensure satisfactory flame retardant solutions.

Comparison of DSC and DTA

Alfa Chemistry's materials chemists will help you choose the best calorimetric analysis method based on your specific product and customer needs.


Differential Scanning Calorimetry (DSC) is a thermal analysis method that measures the relationship between the power difference input to a sample and a reference and temperature under programmed temperature conditions.

Differential thermal analysis (DTA) is a thermal analysis method that measures the temperature difference and temperature relationship between a sample and a reference under program-controlled temperature conditions.

Comparison of DSC and DTA Curves

Comparison of DSC and DTA Curves

  • DSC curve shows exothermic, endothermic and baseline changes, which can not only reflect the phase transition temperature point, but also measure the heat change during the phase transition. In addition, the exothermic and endothermic peaks on the DSC curve represent the exothermic heat and the absorbed heat, respectively.
  • DAT curve shows exothermic, endothermic and baseline changes, which can only reflect temperature characteristics such as phase transition temperature, and the exothermic and endothermic peaks on the curve have no definite physical meaning.

Why Choose Alfa Chemistry?

Experienced team of materials chemists

Leading flame retardant technology

Reliable quality and standards

Fast turnaround times and great prices

Comprehensive and systematic testing and analysis services

Research Information

Study on Curing Kinetics of Flame Retardant Materials by DSC

Hu Jianhua et al. studied the isothermal curing kinetics of DOPO-containing flame retardant epoxy resin by DSC combined with rheological method. The graph below depicts the isothermal cure curves of epoxy resins at five temperatures. The results showed that with the increase of curing temperature, the exothermic peak shifted to a short time, and the heat flow peak was higher. On the other hand, the high temperature curing exothermic peak was sharp, indicating that the reaction was completed in a short time. While at low curing temperatures, such as 110 °C, the exothermic peak broadened, indicating that the reaction took a long time to complete. [1]

Isothermal DSC thermogram of the curing reaction at indicated temperaturesIsothermal DSC thermogram of the curing reaction at indicated temperatures [1]

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  1. Jianhua Hu, et al. (2016). "Isothermal curing kinetics of a flame retardant epoxy resin containing DOPO investigated by DSC and rheology," Thermochimica Acta 632, 56-63.
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