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Thermogravimetric apparatus for measuring volatile and easily condensed products in reaction process

A reaction process and product technology, applied in the field of analytical instruments, can solve the problems of inability to monitor volatile and easily condensed products, and achieve the effects of convenient operation and simple overall structure

Inactive Publication Date: 2013-01-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the deficiencies of the existing thermogravimetric equipment, the object of the present invention is to design a thermogravimetric instrument device, which solves the problem that the existing thermogravimetric instrument cannot monitor the volatile and easily condensable products produced in the reaction

Method used

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  • Thermogravimetric apparatus for measuring volatile and easily condensed products in reaction process
  • Thermogravimetric apparatus for measuring volatile and easily condensed products in reaction process
  • Thermogravimetric apparatus for measuring volatile and easily condensed products in reaction process

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Turn on the power of the thermogravimetric device capable of measuring volatile substances, and control the opening of the lifting device 6 through the data acquisition console 12, so that the device rises to figure 2 In the position shown, the crucible 17 with the reactant sample is placed on the reactant support rod 7, the collection cup 5 is hung on the lower part of the upper microbalance 3 through the hook 4, and then the device is lowered to figure 1 The shown position makes the upper and lower ends of the heating furnace 6 enter the corresponding sealing ring 8 to seal the furnace. Upward measurement chamber 2 and lower measurement chamber 11 through protective gas inlet pipe 15, respectively feed 20ml / min high-purity argon gas; 40ml / min high-purity argon gas is passed into heating furnace 6 through reaction gas inlet pipe 18; data acquisition The console 12 sets the heating program, and the program is opened with 20 oC / min to raise the temperature to the set t...

Embodiment 2

[0033] In this embodiment, the device of the present invention is used. The inner diameter of heating furnace 6 is 30mm, and the working temperature range is 0~1600 o c. According to the above-mentioned working process, put the crucible 17 that fills the silicon nitride powder on the support rod in the thermogravimetric furnace, and feed 40ml / min high-purity argon into the upper measurement chamber 2 and the lower measurement chamber 10 through the protective gas pipe 15, Wait for the furnace sample temperature to rise to 1300 o After C, switch the argon gas to air and water vapor, the specific flow rate is: air 100ml / min, deionized water 0.007ml / min. Keep warm for 100 minutes. After the reaction is over, the reaction gas path is switched to 40ml / min high-purity argon. After cooling down to room temperature, the protective gas and reaction gas pipelines are first closed, and then the lifting device 6 is opened to take out the sample. Silicon nitride will undergo two reacti...

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Abstract

The invention provides a thermogravimetric apparatus for measuring volatile and easily condensed products in products. The apparatus comprises a balance (1), a collecting cup (2), a heating furnace (3), an elevating device (4), a data processing system (5) and a gas circuit system (6), wherein the balance is used for measuring mass variation and comprises an upper end micro balance and a lower end micro balance; the lower end of the upper end micro balance is connected with a volatile matter condensing and collecting cup by a hanging hook and used for measuring the mass variation of the volatile and easily condensed products generated in the reaction; the lower end micro balance is connected with a crucible for placing samples through a reactant supporting rod and is used for measuring mass variation of the reactant; and the collecting cup completely covers the crucible for filling the reactant and has an effect of preventing volatile matters generated in the reaction from being condensed on a furnace tube. Through the adoption of the thermogravimetric apparatus provided by the invention, a difficult problem that the traditional thermogravimetric equipment cannot measure the samples of the volatile and easily condensed products generated in the reaction process; moreover, the mass variations of the samples and the volatile matters can be simultaneously measured, so that the thermogravimetric equipment obtains wider applicability.

Description

technical field [0001] The invention belongs to the technical field of analytical instruments, and in particular provides a thermogravimetric device capable of measuring volatile and easily condensed products produced in the reaction process, specifically, it can simultaneously detect the mass change of the sample and the quality of the volatile and easily condensed products in the reaction process at the same time. Changes while preventing the condensation of volatile products in the furnace. Background technique [0002] During the use of materials, various reactions will occur to make the components change, which is manifested in the quality change of materials at the macroscopic level. The thermogravimetric analysis method is used to study the thermal stability and composition of the material according to the mass change of the material during the reaction. This analysis method is currently a relatively commonly used material detection method. In actual material analysi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
Inventor 侯新梅虞自由陈志远周国治
Owner UNIV OF SCI & TECH BEIJING
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