TGA-FTIR-based refined evaluation method for aging state of silicone rubber material

A technology of aging state and silicone rubber, which is applied to the analysis of materials, thermal development of materials, and material analysis through optical means. It can solve the problems of relatively large errors in the aging evaluation methods of silicone rubber materials, and achieve the effect of improving accuracy.

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

However, the silicone rubber material itself is a mixture formed by base rubber and various organic and inorganic fillers vulcanized at high temperature. large error

Method used

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  • TGA-FTIR-based refined evaluation method for aging state of silicone rubber material
  • TGA-FTIR-based refined evaluation method for aging state of silicone rubber material
  • TGA-FTIR-based refined evaluation method for aging state of silicone rubber material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like Figure 1-Figure 5 As shown, the present invention comprises the following steps,

[0038] (1) Sample preparation, select the silicone rubber material after operation as the test sample; cut the sample from the silicone rubber material after operation, and keep the contact surface with the air during the sample operation process, the sample weight is 20mg±3mg, the sample The thickness does not exceed 1mm. Wipe off the dirt on the surface of the test sample with absolute ethanol, and then place it in a dust cover to dry naturally.

[0039] (2) Connect the gas measurement unit of the FTIR experimental instrument with the TGA test unit and set the test parameters;

[0040] (3) Carry out TGA-FTIR test to sample respectively;

[0041] (4) draw the characteristic curve;

[0042] (5) Evaluation of aging degree.

[0043] The specific operation is as follows:

[0044] (1) Select 3 composite insulators after operation, and use a wallpaper knife to cut out silicone rubb...

Embodiment 2

[0062] It includes the following steps,

[0063] (1) Sample preparation, the silicone rubber material after operation is selected as the test sample; in step (1), the sample is cut from the silicone rubber material after operation, and the contact surface with the air should be kept intact during the sample operation process, and the sample weight It is 20mg ± 3mg, and the thickness of the sample does not exceed 1mm.

[0064] Wipe off the dirt on the surface of the test sample with absolute ethanol, and then place it in a dust cover to dry naturally.

[0065] (2) Connect the gas measurement unit of the FTIR experimental instrument with the TGA test unit and set the test parameters;

[0066] (3) Carry out TGA-FTIR test to sample respectively;

[0067] (4) draw the characteristic curve;

[0068] (5) Evaluation of aging degree.

[0069] The specific operation is as follows:

[0070] (1) Select 3 composite insulators after operation, and use a wallpaper knife to cut out silic...

Embodiment 3

[0086] It includes the following steps,

[0087] (1) Sample preparation, select the silicone rubber material after operation as the test sample; in step (1), the sample weight is 20mg±3mg, the contact surface between the sample and the air should be kept intact during the sample operation, and the sample thickness should not exceed 1mm. Wipe off the dirt on the surface of the test sample with absolute ethanol, and then place it in a dust cover to dry naturally.

[0088] (2) Connect the gas measurement unit of the FTIR experimental instrument with the TGA test unit and set the test parameters;

[0089] (3) Carry out TGA-FTIR test to sample respectively;

[0090] (4) draw the characteristic curve;

[0091] (5) Evaluation of aging degree.

[0092] The specific operation is as follows:

[0093] (1) Select 3 composite insulators after operation, and use a wallpaper knife to cut out silicone rubber samples of similar shape and size on the upper surface of the shed at the high vo...

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Abstract

The invention relates to a TGA-FTIR-based refined evaluation method for aging state of a silicone rubber material, which comprises the following steps: 1, sample preparation: selecting a operated silicone rubber material as a test sample; 2, connecting an FTIR experimental instrument gas measurement unit with a TGA test unit, and setting and testing parameters; 3, respectively carrying out TGA-FTIR test on the samples; 4, drawing a characteristic curve; and 5, evaluating the aging degree. According to the invention, the TGA-FTIR test flow and judgment basis of the silicone rubber material are specified, and a new reference is provided for quality evaluation and residual life prediction of the silicone rubber material.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber material performance research, in particular to a TGA-FTIR-based refinement evaluation method for the aging state of silicone rubber materials. Background technique [0002] Silicone rubber materials are widely favored by power companies due to their excellent pollution flashover resistance. The application of pollution flashover paint (RTV) in power system is growing explosively. So far, the number of composite insulators hanging on the net in my country has exceeded 9 million, and RTV has basically realized "every porcelain must be painted". [0003] However, as a kind of organic polymer material, silicone rubber material is subjected to the combined action of strong electric field, ultraviolet light, high temperature, oxygen, pollution, moisture and other factors during the operation of the hanging net, and its operating state will inevitably deteriorate, that is, aging. For this reas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N21/3563G01N5/04G01N17/00
CPCG01N25/20G01N5/04G01N21/3563G01N17/00G01N2021/3595
Inventor 刘杰贾伯岩孙翠英张志猛田霖佘凯郑雄伟张佳鑫伊晓宇
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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