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Method for analyzing components of asphalt on basis of entropy minimization method

A technology with minimum entropy and asphalt, applied in the direction of analyzing materials, material separation, measuring devices, etc., can solve problems such as far apart components

Inactive Publication Date: 2015-06-17
GUANGXI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are still few studies on asphalt composition analysis at home and abroad. Generally, the four components of asphalt, saturated components, aromatic components, colloids and asphaltene, are generally analyzed, which is far from the complex molecular composition of actual asphalt materials. must be limited

Method used

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  • Method for analyzing components of asphalt on basis of entropy minimization method
  • Method for analyzing components of asphalt on basis of entropy minimization method
  • Method for analyzing components of asphalt on basis of entropy minimization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Determination of a Petroleum Asphalt Component

[0042] 1. Using the instrument

[0043] Agilent 7820A5977E GC / MS instrument; detection conditions: inlet temperature 300°C; sample injection

[0044] Mode: splitless; flow: 1ml / min; column: Agilent HP-5MS capillary column,

[0045] 30mx250μmx0.25μm; heating program: keep at 50°C for 5min, then rise to 290°C at 10°C / min.

[0046] Injection volume: 0.5ul; acquisition mode: full scan, range: 50-450Da; solvent delay 6min;

[0047] The ion source temperature is 230°C; the quadrupole temperature is 150°C; the ionization energy is 70ev; the analysis software is Anjie

[0048] The Mass Hunter Workstation and MREM software that comes with Lun Instruments.

[0049] Second, the specific experimental process.

[0050] 1) measure the GC / MS spectrogram of trichlorethylene, put trichlorethylene into the gas chromatography-mass spectrometry instrument, measure its GC / MS spectrogram, measure the spectrogram as background (such as fi...

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Abstract

The invention discloses a method for analyzing the components of asphalt on the basis of the entropy minimization method. The method comprises the following process of: (1) using gas chromatography-mass spectrometry (GC / MS) to determine the spectrogram of four components of the asphalt; and (2) analyzing the spectrogram of the components of the asphalt on the basis of the entropy minimization principle and obtaining composition materials of each peak in the spectrometry of the gas chromatography-mass spectrometry (GC / MS). The method disclosed by the invention has the advantages that the components of the obtained asphalt are accurate, the representativeness and the reliability are very high, and the specific-component identification of various asphalts such as petroleum asphalt, coal asphalt and natural asphalt (rock asphalt and lake asphalt) can be realized.

Description

technical field [0001] The invention belongs to an asphalt fingerprint identification method, specifically a method for analyzing asphalt components based on an entropy minimum method, and uses the principle of the entropy minimum method to analyze the GC / MS spectrogram of the asphalt components to obtain an analysis method for the asphalt component composition. Background technique [0002] At present, the main research methods of asphalt are macro index and micro index analysis. Macro indicators such as softening point, penetration and other routine experiments are used in the current asphalt technical standards; microstructure analysis is mainly based on functional groups, molecular weight and molecular weight distribution. Studies have shown that although some asphalts have basically the same softening point and softening point changes, their durability is quite different. Therefore, analyzing the service performance and decay characteristics of asphalt only based on so...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 李晶丁世嬴国晓璇罗瑞凌斌尚
Owner GUANGXI UNIV
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