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Real-time measurement method and strengthening method for heat release of Ti-C igniting agent

A technology of real-time determination and igniting agent, which is applied in the direction of chemical analysis by combustion, can solve the problems of incomplete combustion reaction, low sample consumption, and little data, etc. Effect

Inactive Publication Date: 2018-11-06
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

Since the self-propagating combustion synthesis process is a non-ideal adiabatic process, there is heat loss, which causes the incomplete combustion reaction; the amount of sample used in the thermal analyzer research is too low, which is quite different from the actual reaction; the temperature recorder can only measure the temperature, and the data Fewer, and microscopic morphology analysis can only be qualitative but difficult to quantify

Method used

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  • Real-time measurement method and strengthening method for heat release of Ti-C igniting agent

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Effect test

Embodiment 1

[0015] This implementation provides a method for measuring the amount of heat released by Ti-C igniters in real time. The titanium powder (average particle diameter is 0.05mm) and 3g of natural scale (average particle diameter is 0.05mm) carbon powder mixed with formula quantity 12g (mass After the ratio 4:1) is uniform, it is pressed into a cylindrical shape under a pressure of 2.0MPa, and placed in a well-adjusted cone calorimeter, and the cone calorimeter is used to monitor and record the ignition of Ti-C in real time Parameters such as heat release, temperature, and quality of the agent in the reaction process, the results are shown in Table 1.

Embodiment 2

[0017] This embodiment provides a method for real-time determination of the enhanced heat release of Ti-C igniters. The test process is the same as in Example 1, except that the natural flaky graphite carbon powder is completely replaced by expandable graphite, which meets the requirements of the average particle diameter. It is 0.15mm, and the expansion ratio reaches 300mL / g. The results are shown in Table 1.

[0018] It can be seen from Table 1 that parameters such as the heat release and quality of the Ti-C igniter can be measured in real time and accurately; at the same time, expandable graphite is used to replace natural flake graphite carbon powder, and the heat release is significantly increased by about 43.9%. , and its mass loss is large, indicating that expandable graphite can promote its full reaction and enhance its heat release by replacing the scaly carbon powder.

[0019] The physicochemical property parameter of test when reacting 250s in the embodiment of tabl...

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Abstract

The invention provides a real-time measurement method and strengthening method for the heat release of a Ti-C igniting agent. A cone calorimeter is adopted to monitor the heat release, temperature andquality parameters of the Ti-C igniting agent in a reaction process in real time, so that accurate and highly reliable physical and chemical parameters are provided for in-depth studying of the preparation of a composite material with a combustion synthesis method; at the same time, in order to further increase the heat release of the Ti-C igniting agent, expandable graphite is adopted to react with titanium powder, so that the heat release is increased, and the combustion reaction is more complete. On the basis of expanding the application of the cone calorimeter, the method of adopting theexpandable graphite to strengthen the heat release of the Ti-C igniting agent is disclosed for the first time, and a new way for research on the mechanism of the combustion synthesis method is openedup.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis methods, in particular to a real-time measurement of the heat release of a Ti-C igniter and a strengthening method thereof. Background technique [0002] Ti-C igniter composite powder, as an igniter commonly used in self-propagating high-temperature synthetic composite materials, has the characteristics of low ignition temperature and large heat release. Based on the judgment of the reaction product and its stability, the temperature of the reaction system is recorded in real time with a thermocouple or a comprehensive thermal analyzer, or the phase transition and tissue transition process during the combustion synthesis process are analyzed by using the "combustion wave quenching method". Direct observation, and then study the reaction mechanism of Ti-C igniter composite powder system. Since the self-propagating combustion synthesis process is a non-ideal adiabatic process, there is h...

Claims

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Application Information

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IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 王亚超赵江平崔晓红李华韩煜久杨宏刚张田娇周钦君李雨星王若琪
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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