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Method for determining influences of impurities on thermal stability of solid self-reactive substance

A technology of thermal stability and self-reaction, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., and can solve the problems that the thermal stability of solid self-reactive substances has not yet been established.

Active Publication Date: 2014-08-27
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the prior art has not yet established a test method for determining the influence of impurities on the thermal stability of solid self-reactive substances, and provides a new method for determining the influence of impurities on the thermal stability of solid self-reactive substances

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  • Method for determining influences of impurities on thermal stability of solid self-reactive substance

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Embodiment 1

[0015] The specific steps of the differential scanning calorimetry test, the vacuum stability test, and the self-accelerating decomposition temperature (SADT) test involved in the present invention are as follows:

[0016] 1. Differential Scanning Calorimetry

[0017] 1. Principle

[0018] The measured solid self-reactive substances and the mixture of the measured solid self-reactive substances and impurities at different temperatures, due to chemical or physical changes, can cause thermal effects to change the temperature of the measured substances. Use a differential scanning calorimeter to measure and record the relationship between the temperature difference between the measured substance and the reference substance and the temperature, and draw a curve (ie DSC curve). Compatibility between the test substance and the impurity is assessed by calculating the magnitude of this variable on the curve of the initial exotherm or peak temperature of the mixed system relative to t...

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Abstract

The invention relates to a method for determining the influences of impurities on the thermal stability of a solid self-reactive substance, and mainly solves a problem that methods for testing the influences of the impurities on the thermal stability of the solid self-reactive substance are not established in the prior art. The method for determining the influences of impurities on the thermal stability of the solid self-reactive substance adopts differential scanning calorimetry, vacuum stability and self accelerating decomposition temperature (SADT) testing processes to respectively determine the thermal stability, the stability under vacuum conditions and SADT of each of the solid self-reactive substance and a solid self-reactive substance and impurity mixture in order to evaluate whether the impurities are compatible with the solid self-reactive substance to be tested or not, and can be used to determine the influences of the impurities on the thermal stability of the solid self-reactive substance.

Description

technical field [0001] The invention relates to a method for determining the influence of impurities on the thermal stability of solid self-reactive substances. Background technique [0002] Today, with the rapid development of the modern chemical industry, major industrial accidents have occurred one after another around the world, such as toxic gas leakage, fire and explosion of dangerous chemicals and other accidents. In the 18 years from 1960 to 1977, there were more than 360 major fire and explosion accidents involving chemicals in the United States and Western Europe, causing 1,979 casualties and direct economic losses of more than 1 billion US dollars. In the 50 years from 1950 to 1999, there were 23,425 casualties and 25,714 casualties, including 4,043 casualties in chemical fire and explosion accidents. Among the fire and explosion accidents of many chemical substances, the accident caused by the thermal hazard (thermal spontaneous combustion, thermal decomposition...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 金满平张帆张晨费轶孙峰姜杰徐伟石宁谢传欣
Owner CHINA PETROLEUM & CHEM CORP
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