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Silicone rubber material quality evaluation method based on TGA-FTIR

A quality evaluation and silicone rubber technology, applied in the field of silicone rubber material performance research, can solve the problems of long time consumption, poor equivalence of natural operating environment, heavy maintenance workload of personnel, etc.

Pending Publication Date: 2021-06-25
STATE GRID HEBEI ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the differences in production processes and formulas of various manufacturers, the quality of their products is also different, and the service life of some manufacturers' products after hanging on the net is far from reaching the design value
However, the quality inspection of existing silicone rubber products mainly relies on artificial accelerated aging tests, which have disadvantages such as time-consuming, complicated operations, and poor equivalence with natural operating environments, making it difficult to popularize and apply in engineering practice.
In order to prevent the occurrence of pollution flashover accidents and improve the reliability of power grid operation, power grid companies have to propose a regular rotation method of 8-10 years on the basis of summarizing a large number of operating experience. , resulting in increased repetitive investment in the power grid, heavy personnel maintenance workload, increased white pollution to the environment after decommissioning silicone rubber products, and reduced reliability of power grid operation

Method used

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  • Silicone rubber material quality evaluation method based on TGA-FTIR
  • Silicone rubber material quality evaluation method based on TGA-FTIR
  • Silicone rubber material quality evaluation method based on TGA-FTIR

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0064] (1) Sample preparation, cut samples from the cured silicone rubber material and its base rubber;

[0065] Select two types of composite insulators produced by a certain manufacturer, and use a wallpaper knife to cut a piece at the shed of the shed as a test silicone rubber sampleN 硅橡胶 , respectively recorded as 3#, 4#. 3# and 4# are silicone rubber materials with different proportions made of the same base rubber and filler. The sample weight was 20±3 mg. Use a wallpaper knife to cut out the base rubber used in the silicone rubber material as a test base rubber sample N 基胶 ; 3#, 4# two samples are similar in shape and structure, and the surface dirt is wiped with absolute ethanol, placed in a dust cover, and dried naturally.

[0066] (2) The gas measurement unit of the FTIR experimental instrument is connected with the test unit of the TGA experimental instrument, and the test parameters are set.

[0067] The gas measurement unit of the FTIR experimental instrument ...

Embodiment 3

[0087] (1) Sample preparation, cut samples from the cured silicone rubber material and its base rubber;

[0088] Select two types of composite insulators produced by a certain manufacturer, and use a wallpaper knife to cut a piece at the shed of the shed as a test silicone rubber sampleN 硅橡胶 , respectively recorded as 5#, 6#. 5# and 6# are silicone rubber materials with different proportions made of the same base rubber and filler. The sample weight was 20±3 mg. Use a wallpaper knife to cut out the base rubber used in the silicone rubber material as a test base rubber sample N 基胶 ; 5#, 6# two samples are similar in shape and structure, and the surface dirt is wiped with absolute ethanol, placed in a dust cover, and naturally air-dried.

[0089] (2) The gas measurement unit of the FTIR experimental instrument is connected with the TGA test unit, and the test parameters are set.

[0090] The gas measurement unit of the FTIR experimental instrument is connected with the TGA t...

Embodiment 4

[0110] (1) Sample preparation, cut samples from the cured silicone rubber material and its base rubber;

[0111] Select two types of composite insulators produced by a certain manufacturer, and use a wallpaper knife to cut a piece at the shed of the shed as a test silicone rubber sampleN 硅橡胶 , respectively recorded as 7#, 8#. 7# and 8# are silicone rubber materials with different proportions made of the same base rubber and filler. The sample weight was 20±3 mg. Use a wallpaper knife to cut out the base rubber used in the silicone rubber material as a test base rubber sample N 基胶 ; 7#, 8# two samples are similar in shape and structure, and the surface dirt is wiped with absolute ethanol, placed in a dust cover, and naturally air-dried.

[0112] (2) The gas measurement unit of the FTIR experimental instrument is connected with the TGA experimental instrument, and the test parameters are set.

[0113] The gas measurement unit of the FTIR experimental instrument is connected ...

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Abstract

The invention relates to a silicone rubber material quality evaluation method based on TGA-FTIR, which comprises the following steps: 1, sample preparation: cutting a sample from a cured silicone rubber material and base rubber used by the cured silicone rubber material; 2, connecting the FTIR experimental instrument gas measurement unit with the TGA test unit, and setting test parameters; 3, respectively carrying out TGA-FTIR test on the samples; 4, carrying out hydrophobic durability characterization; 5, calculating the content of the base rubber; and 6, carrying out silicon rubber material quality evaluation. According to the method, the TGA technology and the FTIR technology are combined, effective distinguishing of the base rubber and the filler in the silicone rubber material is achieved, and accurate characterization of the content of the base rubber in the silicone rubber material is achieved.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber material performance research, and in particular relates to a TGA-FTIR-based quality evaluation method for silicone rubber materials. Background technique [0002] Silicone rubber materials are widely recognized by power grid companies due to their excellent pollution flashover resistance, and are widely used in transmission lines. According to statistics, as of now, the application volume of silicone rubber composite insulators alone in my country has exceeded 9 million pieces, and RTV anti-pollution flashover coatings have basically achieved "must be painted on every porcelain". [0003] However, in recent years, with the continuous promotion of composite insulators and RTV anti-pollution flashover coating manufacturing technology, a large number of manufacturers have entered the market for silicone rubber products for power. Due to the differences in the production process and formula ...

Claims

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Application Information

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IPC IPC(8): G01N25/20G01N21/3563G01N5/04G01N17/00
CPCG01N25/20G01N5/04G01N21/3563G01N17/00G01N2021/3595
Inventor 刘杰贾伯岩田霖孙翠英佘凯张志猛郑雄伟伊晓宇张佳鑫
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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