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Glass transition brittleness factor analysis method based on calorimetric testing

A technology of glass transition and factor analysis, applied in the investigation stage/state change, etc., can solve the problems of difficult measurement and low precision, achieve the effect of simple operation, reduce experimental error, and improve data reliability

Inactive Publication Date: 2021-05-07
TIANJIN UNIV
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Problems solved by technology

The present invention adopts differential calorimetry scanning technology to provide a new method for analyzing the brittleness factor at the glass transition of the material, improves the experimental measurement accuracy of the brittleness factor, and effectively solves the problem of the brittleness factor, which is a physical quantity difficult to measure and has low precision. The accuracy of experimental measurements provides scientific technical guidance

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  • Glass transition brittleness factor analysis method based on calorimetric testing
  • Glass transition brittleness factor analysis method based on calorimetric testing
  • Glass transition brittleness factor analysis method based on calorimetric testing

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] The invention is a glass transition brittleness factor analysis method based on calorimetry test, which includes calorimetry test of glass forming material and fitting process of glass transition parameters to obtain the glass transition brittleness factor of the material. The method is an indirect experimental test method designed for glassy materials, and a differential calorimetry scanner is used to perform a calorimetric test on the substance, and the same substance is obtained at a cooling rate of 5, 10, 20, 40, and 60K / min respectively. Five different glass states, for five different glass states at the same heating rate of 20K / min to obtain the heating heat flow curves of different glass states. The standard structure temperature of the substance is obtained by fitting and theoretically calculating the temperature rise heat capacity curve ...

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Abstract

The invention provides a glass transition brittleness factor analysis method based on calorimetric testing, and the method is characterized in that a calorimetric experimental test method is designed for a glassy material, a heat flow test is carried out on a substance by using a differential calorimetric scanner, and different cooling rates are changed in each sample heating heat flow curve measurement, different glassy states are obtained by controlling the same heating rate, and after a standard glassy state is determined, enthalpy differences are constructed for different glassy states, so that the structure temperature and the activation energy for preparing the glassy states at different cooling rates are obtained, and finally, the numerical value of the brittleness factor of the glass-transition kinetic parameter of the substance is obtained.

Description

technical field [0001] The invention relates to the technical field of a new type of material - a glassy material, in particular to a glass transition brittleness factor analysis method based on a calorimetry test. Background technique [0002] Glassy materials, also known as amorphous materials, are materials with irregular arrangement of internal atoms, long-range disorder and short-range order. With the rapid development of the field of materials, glassy materials, as a new type of green material, are widely used in biomedicine, energy transmission, military industry, electronic communications, etc. due to their high strength, high hardness, corrosion resistance, and good photoelectric conversion efficiency. It has been applied in many fields and produced value that crystalline materials do not have. At present, the application of energy-saving and environmentally friendly materials such as iron-based amorphous transformers and amorphous silicon solar cells has made a huge...

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Application Information

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IPC IPC(8): G01N25/02
CPCG01N25/02
Inventor 余建星刘欣余杨王彩妹王华昆李昊达
Owner TIANJIN UNIV
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