Method for identifying aging degree of silicon rubber composite insulator

A technology of composite insulator and aging degree, which is applied in the field of analysis and detection, and achieves the effects of high degree of visualization, high sensitivity and accurate quantification

Active Publication Date: 2013-10-09
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, Micro-FTIR technology has been widely used in polymers, polymer chemistry, catalytic chemistry, coating industry, pigment chemical industry, adhesives, synthetics, minerals, natural compounds, physical evidence identification for criminal detection, biology, medicine, and gemstones. Defects of pure materials, contamination of pure materials, metal surface treatment, the role of lubricants in friction, and semiconductor products, etc., but there is no relevant report on the use of micro-infrared mapping analysis to identify the aging degree of silicone rubber composite insulators

Method used

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  • Method for identifying aging degree of silicon rubber composite insulator
  • Method for identifying aging degree of silicon rubber composite insulator

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Embodiment 1

[0032] In this embodiment, the silicone rubber sheet made in the laboratory is used as the object, and after it is subjected to an accelerated ultraviolet aging test, this method is used to identify its aging degree, (for the flow chart, see figure 1 ), specifically including the following steps:

[0033] (1) A batch of silicone rubber is refined in the laboratory, and an aging experiment is carried out for a period of time in a UV accelerated aging box;

[0034] (2) Sampling and sectioning every 240 hours; when slicing, the sample is frozen by an electric cooling table, and the thickness of the sample is 10-20 μm; the darker the color, the thinner the thickness. Mark one side of the aged surface for easy analysis;

[0035] (3) Silicon methyl 1296cm -1 In order to calibrate the peak, the sample is scanned by micro-infrared, and the micro-infrared Mapping diagram of the 0h, 240h, 480h, 720h sample is obtained, see figure 2 ; Among them, the test conditions are: reflective m...

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Abstract

The invention discloses a method for identifying the aging degree of a silicon rubber composite insulator. The method comprises the following steps: determining the states of umbrella skirt test samples of the silicon rubber composite insulator by taking the operating age limit as reference, and selecting a sample area of each state to obtain an average-value test sample of each state; sampling and cutting into slices; performing microscopic infrared scanning on the slices by taking silicon methyl 1296 cm<-1> as a calibrated peak to obtain microscopic infrared micro-area scanning images of the slices with different age limits; calculating the ageing depth H value from the microscopic infrared micro-area scanning images, fitting the relationship between the H value of the samples with different age limits and time to obtain an ageing model; quantitatively identifying the ageing degree of an unknown sample according to the ageing model. According to the method, the ageing degree of the silicon rubber composite insulator can be quantitatively analyzed by a microscopic infrared Mapping scanning technology; the change of the silicon rubber composite insulator from the surface to the center along with ageing can be observed; the visualization degree is high.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to an identification method for the aging degree of a silicone rubber composite insulator. Background technique [0002] Composite insulators will be affected by various factors during operation, including electrical, mechanical and environmental factors. With the increase of operation time, composite insulators operating in different regions will experience a decline in hydrophobicity, discoloration, hardening and brittle sheds , pulverization, cracking, tracking or electrical corrosion, end seal failure, flashover of unknown reasons, etc., the aging problems of composite insulators under the influence of long-term electrification and outdoor environmental factors have caused composite insulator production, operation and scientific research departments of high attention. [0003] The overall operation of composite insulators in my country is relatively good, but there are als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35
Inventor 徐晓刚彭向阳许志海麦晓明毛先胤方鹏飞王建国罗伟才刘杨王康
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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