A thermogravimetric analysis system capable of high-precision initial stability measurement

A thermogravimetric analysis, high-precision technology, applied in the direction of measuring devices, material analysis, material analysis by electromagnetic means, etc., can solve the problems of air flow disturbance effect that is difficult to ignore, noise signal reduction, corrosion of electronic balances, etc. Effects of baseline drift, impact reduction, and corrosion suppression

Active Publication Date: 2022-05-31
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the thermobalance system developed by Maple Steel improved the signal-to-noise ratio in the initial stage of thermobalance measurement by using infrared radiation heating, the influence of airflow disturbance effect is still difficult to ignore, and the noise signal still needs to be further reduced
In addition, the above-mentioned thermal balance system has the problem of reactive gas and generated gas corroding the electronic balance, especially when the sample contains high-temperature volatile substances, the vaporized volatile substances will condense on the upper electronic balance end, which will damage the accuracy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A thermogravimetric analysis system capable of high-precision initial stability measurement
  • A thermogravimetric analysis system capable of high-precision initial stability measurement
  • A thermogravimetric analysis system capable of high-precision initial stability measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, in this embodiment, the basic structure of a thermogravimetric analysis system that can realize high-precision initial stable measurement, the system includes a reactor, an electronic balance weighing device, an infrared radiation heating device 14, and a gas control device. The specific structure is as follows:

[0033]The electronic balance weighing device is located above the reactor, and the reactor is passed through the central hole of the annular infrared radiation heating device 14; the electronic balance weighing device includes an electronic balance 1, a sealing cover 11, an electronic balance weighing device base 12, and an electronic balance scale. The top of the base 12 of the measuring device is provided with a sealing cover 11 to form an electronic balance room. The electronic balance 1 is located in the electronic balance room. A balance weight 13 is installed at the lower end of 9, the balance weight 13 is located in the sealing t...

Embodiment 2

[0040] This embodiment further illustrates the beneficial effect of the present invention in reducing the noise signal of thermogravimetric data in combination with the simulation calculation.

[0041] like figure 2 As shown in the schematic diagram of the simulation of the gas flowing through the sample under the structural condition of the conventional reactor (single-walled quartz tube), it can be seen that without the porous quartz inner tube structure, the gas flowing through the weighing sample will produce a large airflow disturbance. effect, thereby reducing the signal-to-noise ratio of the thermogravimetric data.

[0042] like image 3 and Figure 4 As shown, in the case of different quartz inner tube opening structures, the simulation is the same as figure 2 The gas parameter settings are exactly the same. It can be seen from the simulation schematic diagram of the gas flowing through the sample under the structural conditions of the reactor according to the pre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to high-temperature oxidation experimental equipment, in particular to a thermogravimetric analysis system capable of realizing high-precision initial stability measurement. The electronic balance weighing device is located above the reactor, and the reactor is installed in the central hole of the annular infrared radiation heating device; the reactor includes a quartz inner tube and a quartz outer tube, and the upper and lower sides of the vertically arranged quartz outer tube are nested respectively. The quartz inner tube with a hole in the wall, the upper quartz inner tube and the lower quartz inner tube are arranged vertically opposite, the opening of the upper quartz inner tube is located at the upper end and communicates with the electronic balance weighing device, and the opening of the lower quartz inner tube is located at the lower end and It is connected with the air inlet of the gas control device; the upper quartz inner tube is used as a reaction chamber for weighing samples. The invention realizes rapid heating of samples and ultra-fast and stable temperature control, reduces the influence of airflow disturbance effect, reduces the noise signal of thermogravimetric data, and inhibits the damage of reaction gas and generated gas to the electronic balance through specific structural design of the reactor.

Description

technical field [0001] The invention belongs to high-temperature oxidation experimental equipment, in particular to a thermogravimetric analysis system capable of realizing high-precision initial stable measurement. Background technique [0002] Thermogravimetric analyzer (thermobalance) is an instrument device that measures the change of sample mass with time under programmed temperature conditions, and is widely used in high temperature reaction kinetics research. However, although many fields such as material preparation and processing, heat treatment, and material service behavior are involved in the study of the initial oxidation mechanism, it is still difficult to obtain reliable information on the initial oxidation kinetics by existing experimental methods. [0003] The conventional thermobalance has a long heating and stabilization time. During the long temperature changing process, the airflow disturbance effect introduces a large number of noise signals, which mask...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/00G01N27/62
CPCG01N5/00G01N27/62
Inventor 张雪刘自贺杨晓光唐奡李瑛
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap