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Quantitative determination method for graphene in textile

A quantitative detection method and textile technology, applied in the direction of textile testing, material inspection products, etc., can solve the problems of rare graphene and blank national standards, and achieve the effect of maintaining interests, improving detection capabilities, and promoting the healthy development of the market

Pending Publication Date: 2018-02-09
SHANGHAI INST OF QUALITY INSPECTION & TECHN RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are still few standards on graphene, the national standard is still blank, and the reports on the detection method of graphene in this kind of fabric are even rarer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: the quantitative detection method of graphene in graphene viscose textile

[0047] a Instrument calibration and parameter setting

[0048] Standard material: use benzoic acid as the standard material, and calibrate the instrument according to the standard operation procedure provided by the instrument manufacturer. The test results of each element of the standard substance should be within ±3% of the theoretical value. During the actual analysis, the sample test setup conditions should be the same as when the instrument was calibrated.

[0049] Helium as the carrier gas is pre-set to about 3.0 bar on the pressure reducing valve, and the combustion gas oxygen is pre-set to about 2.5 bar in order to correctly adjust the pressure at the inlet of the instrument. Correctly adjust the pressure at the inlet according to the requirements of each type of instrument. The amount of oxygen added can be adjusted appropriately due to the different flammability of the ...

Embodiment 2

[0069] Embodiment 2: the quantitative detection method of graphene in graphene polyester textile

[0070] a Instrument calibration and parameter setting

[0071] Standard material: use sulfonamide as a standard material, and calibrate the instrument according to the standardized operating procedure provided by the instrument manufacturer. The test results of each element of the standard substance should be within ±3% of the theoretical value. During the actual analysis, the sample test setup conditions should be the same as when the instrument was calibrated.

[0072] Helium as the carrier gas is pre-set to about 3.0 bar on the pressure reducing valve, and the combustion gas oxygen is pre-set to about 2.5 bar in order to correctly adjust the pressure at the inlet of the instrument. Correctly adjust the pressure at the inlet according to the requirements of each type of instrument. The amount of oxygen added can be adjusted appropriately due to the different flammability of t...

Embodiment 3

[0085] Embodiment 3: the quantitative detection method of graphene in graphene polypropylene fiber textile

[0086] a Instrument calibration and parameter setting

[0087] Standard material: Use sulfanilic acid as a standard material, and calibrate the instrument according to the standardized operating procedure provided by the instrument manufacturer. The test results of each element of the standard substance should be within ±3% of the theoretical value. During the actual analysis, the sample test setup conditions should be the same as when the instrument was calibrated.

[0088] Helium as the carrier gas is pre-set to about 3.0 bar on the pressure reducing valve, and the combustion gas oxygen is pre-set to about 2.5 bar in order to correctly adjust the pressure at the inlet of the instrument. Correctly adjust the pressure at the inlet according to the requirements of each type of instrument. The amount of oxygen added can be adjusted appropriately due to the different fla...

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Abstract

The invention discloses a quantitative determination method for graphene in a textile. The quantitative determination method employs a sample introduction and oxygen injection device, a heating furnace, a reaction tube, a gas mixture separating part, a detector and an automatic calculating system and comprises the following steps: calibrating apparatuses with standard substances, wherein a combustion furnace has a temperature of 950 to 1100 DEG C in a CHN mode and a temperature of 1150 to 1300 DEG C in a CHNS mode, a reduction furnace has a temperature of 550 to 800 DEG C in a CHN mode and a temperature of 850 to 1100 DEG C in a CHNS mode, the pressures of carrier gas and combustion gas are 2.0 to 5.0 Bar and 2.5 to 4.0 Bar respectively, the flow velocities of carrier gas and combustion gas at apparatus inlets are 300 to 500 mL / min and 30 to 50 mL / min respectively, and the flow velocity of to-be-detected gas is 300 to 400 mL / min; accurately weighing a sample with a tin boat for testing, determining a blank value at first, then optimizing the conditions of the apparatuses by using standard substances, testing the selected standard substances by using the optimized conditions, and carrying out apparatus calibration by using a K factor or linear regression; and calculating results. The quantitative determination method provided by the invention provides necessary technological reserve for detection of graphene textiles in the future and promotes the sound development of a graphene functional textile market in China.

Description

technical field [0001] The invention relates to a quantitative detection method of graphene in textiles. Background technique [0002] Graphene is called "black gold" and is the "king of new materials". The discovery of graphene not only enriches carbon materials, but also its special nanostructure and excellent mechanical, electrical, thermal and optical properties make graphene show great scientific significance and application value. Graphene is a two-dimensional crystal with a single atomic layer of carbon atoms in a hybrid arrangement. It is in the form of a hexagonal ring plate and forms a honeycomb crystal structure. The special single atomic layer structure of graphene makes it have many unique physical and chemical properties, such as High modulus (1060GPa), high strength (130GPa), high specific surface area (2600m 2 / g), high-speed electron mobility at room temperature (20000cm 2 / Vs), high thermal conductivity (3000W / mK), quantum Hall effect, etc. These excell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/36
CPCG01N33/36
Inventor 雒香庄园园李卫东陆华富王辰江高建国
Owner SHANGHAI INST OF QUALITY INSPECTION & TECHN RES
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