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

A technology of thermal stability and self-reaction, applied in the direction of thermal development of materials, etc., can solve the problems that the test method for judging the thermal stability of impurities has not yet been established, and achieve reliable evaluation results, stable use conditions, and good technical effects

Active Publication Date: 2014-08-27
CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
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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 self-reactive substances, and provides a new method for determining the influence of impurities on the thermal stability of self-reactive substances containing liquids

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

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Embodiment 1

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

[0016] 1. Differential scanning calorimetry test

[0017] 1. Principle

[0018] The measured liquid-like self-reactive substance and the measured mixture containing liquid-like self-reactive substance and impurities are at different temperatures, and the thermal effect caused by chemical or physical changes can cause the temperature change of the measured substance. 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 (that is, the DSC curve). By calculating the magnitude of the variable on the curve relative to the initial exothermic temperature or peak temperature of the mixed system on the curve relative to the in...

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Abstract

The invention relates to a method for determining the influences of impurities on the thermal stability of a liquid self-reactive substance, and mainly solves a problem that methods for testing the influences of the impurities on the thermal stability of the liquid self-reactive substance are not established in the prior art. The method for determining the influences of impurities on the thermal stability of the liquid 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 liquid self-reactive substance and a liquid self-reactive substance and impurity mixture in order to evaluate whether the impurities are compatible with the liquid 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 liquid self-reactive substance.

Description

technical field [0001] The invention relates to a method for judging the influence of impurities on the thermal stability of a liquid-containing self-reactive substance. 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 poisonous 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 chemical fire and explosion accidents in the United States and Western Europe, killing 1979 people and causing direct economic losses of more than 1 billion US dollars. Accidents in my country's chemical industry occur more frequently. In the 50 years from 1950 to 1999, there were 23,425 casualty accidents of various types, with 25,714 casualties, including 4,043 casualties in chemical fire and explosion accidents. Among the fire and explosion accidents of many chemicals, the acc...

Claims

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Application Information

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IPC IPC(8): G01N25/20
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 QINGDAO RES INST OF SAFETY ENG
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