Method for detecting content of carbon and sulfur in graphene based on high temperature combustion infrared absorption process

A technology of high-temperature combustion and infrared absorption, which is applied in the direction of measuring devices, preparation of test samples, chemical analysis by means of combustion, etc., can solve the problems of combustion splash, sample loss, and narrow heating space structure of high-frequency combustion reaction chamber, etc., to achieve The effect of increasing the weighing amount and satisfying the accuracy

Inactive Publication Date: 2017-05-24
NCS TESTING TECH
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Problems solved by technology

[0003] Conventional carbon and sulfur analysis uses the principle of high-frequency induction heating-infrared absorption to detect carbon and sulfur in the sample. Due to the design characteristics of this type of instrument, the heating space structure of the high-frequency combustion reaction chamber is narrow, and the oxygen flow is rapid during heating. Burns instantaneously and reacts violently. Graphene is a two-dimensional material with a thickness of o

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  • Method for detecting content of carbon and sulfur in graphene based on high temperature combustion infrared absorption process
  • Method for detecting content of carbon and sulfur in graphene based on high temperature combustion infrared absorption process
  • Method for detecting content of carbon and sulfur in graphene based on high temperature combustion infrared absorption process

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[0067] Example

[0068] First, the preparation of high temperature combustion infrared carbon and sulfur analyzer

[0069] Turn on the power switch of the high temperature combustion infrared carbon and sulfur analyzer. The infrared detection system 7 needs to be warmed up for about 1 hour to reach a constant temperature and a stable baseline; turn on the heating power switch, set the temperature at 1350°C, and surround the heating tube in the high temperature furnace 2 4 The surrounding silicon carbide rods 3 start to heat and wait for the temperature to stabilize; then turn on the power gas (normal nitrogen, 0.25MPa~0.35MPa), and turn on the carrier gas (oxygen, purity ≧99.5%, 0.15~0.25MPa).

[0070] Analyze 2-3 waste samples first, saturate the analysis gas path, and stabilize the instrument.

[0071] The second step is to prepare and weigh the sample

[0072] use figure 2 Place the prepared sheath 24 between the pressing rod 21 and the bottom support 22, pour an appropriate amoun...

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Abstract

The invention belongs to the technical field of analysis detection of the content of important elements carbon and sulfur in graphene, and especially relates to a method for detecting the content of carbon and sulfur in graphene based on a high temperature combustion infrared absorption process. The method comprises the following steps: 1, preparing a high temperature combustion infrared carbon and sulfur analyzer; 2, preparing and weighing a sample; 3, establishing a working curve by using a coal reference substance; and 4, analyzing a compacted graphene sample. The carbon analysis precision reaches 1%, the sulfur analysis precision reaches 2%, obtained results accord with production technology expectation, the precisions meet analysis requirements, the demand of graphene manufacturers for the control and the improvement of the product quality is met, and the gap in the graphene test field is filled.

Description

technical field [0001] The invention belongs to the technical field of analysis and determination of carbon and sulfur content of important elements in graphene, and in particular relates to a method for rapidly and accurately measuring carbon and sulfur content in graphene based on a high-temperature combustion infrared absorption method. Background technique [0002] As an emerging material, graphene is known as the thinnest, hardest, and best conductive material. It has the characteristics of super-extreme thermal and electrical conductivity, strong and transparent. It can replace traditional materials and become a new material with the most industrial development value. Industrial applications have been realized in many fields such as semiconductors, batteries, chips, energy storage materials, sensors, touch devices, conductive ink pastes, and composite materials. With the advancement of technology, the requirements for the quality of graphene products are also getting h...

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Application Information

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IPC IPC(8): G01N21/3504G01N31/12G01N1/28
CPCG01N1/286G01N21/3504G01N31/12
Inventor 侯红霞张长均王学华黄小峰郭飞飞吴利民王蓬杨植岗
Owner NCS TESTING TECH
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