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A method and system for judging the degradation effect of organic additives in gel phase

A technology of organic additives and determination methods, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of lack of determination methods and systems for the degradation effect of organic additives, and achieve the effects of efficient determination process, broad application prospects and simple process.

Active Publication Date: 2021-07-02
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for judging the degradation effect of organic additives in the gel phase, thereby solving the problem in the prior art that lacks a fast and effective method and system for judging the degradation effect of organic additives in the gel phase

Method used

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  • A method and system for judging the degradation effect of organic additives in gel phase
  • A method and system for judging the degradation effect of organic additives in gel phase
  • A method and system for judging the degradation effect of organic additives in gel phase

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Embodiment 1

[0027] Method for judging the degradation effect of organic additives (excluding polyhydroxy polymers) in the gel phase of embodiment 1

[0028] figure 1 It is a flow chart of the method for determining the degradation effect of organic additives (excluding polyhydroxy polymers) in the gel phase according to the present invention, and the specific process steps are as follows:

[0029] Step S01, obtaining the comprehensive two-dimensional chromatogram of the gel phase to be evaluated and the corresponding comparison gel phase pyrolysis.

[0030] Specifically, firstly, the temperature of the pyrolysis device is raised to above 600°C under an inert atmosphere. After constant temperature, the gel phase to be evaluated is quickly put into the pyrolysis device and the inlet is tightened to seal. Inert gas is used to carry the pyrolysis gas phase product from the pyrolysis device into the gas chromatograph, start the gas chromatograph and the solid-state thermal modulator in sequen...

Embodiment 2

[0036] Method for judging the degradation effect of organic additives (comprising polyhydroxy polymers) in the gel phase of embodiment 2

[0037] figure 2 It is a flow chart of the method for determining the degradation effect of organic additives (comprising polyhydroxy polymers) in the gel phase according to the present invention, and the specific process steps are as follows:

[0038] Step S101 , obtaining the pyrolysis comprehensive two-dimensional chromatogram of the gel phase to be evaluated and the corresponding comparative gel phase.

[0039] Specifically, firstly, the temperature of the pyrolysis device is raised to above 600°C under an inert atmosphere. After constant temperature, the gel phase to be evaluated is quickly put into the pyrolysis device and the inlet is tightened to seal. Inert gas is used to carry the pyrolysis gas phase product from the pyrolysis device into the gas chromatograph, start the gas chromatograph and the solid-state thermal modulator in ...

Embodiment 3

[0048] Example 3 Degradation Effect Determination System of Organic Additives in Gel Phase

[0049] According to a preferred embodiment of the present invention, a kind of judging system of organic additive degradation effect in the gel phase is provided (see image 3 ), including: pyrolysis device 10, used for gel phase pyrolysis, to obtain pyrolysis gas phase products; gas chromatography 20, used for one-dimensional separation of pyrolysis gas phase products; solid-state thermal modulator 30, used to collect one-dimensional The material flowing out of the column is re-injected into the two-dimensional chromatographic column for additional separation; the detector 40 is used for the qualitative analysis of the pyrolysis gas phase products; the data processing and judgment device 50 is used for the quantitative analysis of the pyrolysis products and the gel phase Judgment of the degradation effect of organic additives.

[0050] Preferably, the judgment system also includes an...

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Abstract

The invention provides a method and system for judging the degradation effect of organic additives in the gel phase. According to whether polyhydroxy polymers are included in the organic additives, different steps are used for judging: when the organic additives in the gel phase do not include polyhydroxy polymers , the determination steps are as follows: S01, obtain the pyrolysis comprehensive two-dimensional chromatograms of the gel phase to be evaluated and the corresponding comparison gel phase respectively; S02, determine whether the total gas phase product content of the gel phase to be evaluated is less than the first preset threshold; S03, when the total gas phase product content is less than the first preset threshold, it is determined that the degradation effect of the organic additive in the gel phase reaches the standard. The present invention uses a comprehensive two-dimensional gas chromatograph or a comprehensive two-dimensional gas chromatography to analyze the types and contents of pyrolysis gas phase products of organic additives in the gel phase to investigate the impact of degradation methods on the content of organic matter in the gel phase, thereby providing A fast and effective method and system for judging the degradation effect of organic additives in the gel phase are provided.

Description

technical field [0001] The invention relates to ceramic preparation, and more specifically relates to a method and system for judging the degradation effect of organic additives in a gel phase. Background technique [0002] The sol-gel method is often used to prepare ceramics, films, fibers and composite materials. This method mainly includes processes such as compounding, molding and heat treatment. Among them, forming is to prepare the sol to form a gel with a specific geometry. In order to make the gel have sufficient structural stability and mechanical strength, some additives are often added, such as curing agents (such as hexamethylenetetramine), adhesives, etc. (such as polyvinyl alcohol, poly N methyl methacrylate and urea-formaldehyde resin, etc.) and crosslinking agents (such as tetrahydrofurfuryl alcohol), etc. During heat treatment, these additives will pyrolyze and release a large amount of gas, which will lead to the cracking of materials such as xerogels or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/90
Inventor 王鹏林俊曹长青黄鹤严超张锋李子威张海青于小河
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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