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Method using hydrophobic migration tests to judge silicone rubber aging degree

A technology of hydrophobic mobility and aging degree, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc. It can solve the problems of being unable to judge the continued use or choosing to replace new products, and unable to realize the aging degree of silicone rubber.

Inactive Publication Date: 2016-07-13
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for judging the aging degree of silicone rubber based on the hydrophobic migration test, aiming to solve the problem that the existing technology cannot realize the aging degree of silicone rubber and cannot judge whether it can continue to be used or choose to replace it with a new product

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  • Method using hydrophobic migration tests to judge silicone rubber aging degree

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] Attached below figure 1 The application principle of the present invention is described in detail.

[0015] S101: Cut the shed of the composite insulator from the root to make a test piece or scrape the RTV coating along the insulator, clean the natural dirt on the surface, and place it at room temperature for 7 days;

[0016] S102: Then apply artificial pollution with the same pollution degree and composition, and start the hydrophobic migration test. The first 96 hours conduct a hydrophobicity test every 12 hours, and the 96h ~ 196h carry out a hydrophobic migration test every 24 hours;

[0017] S103: Draw a hydr...

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Abstract

The invention discloses a method using hydrophobic migration tests to judge silicone rubber aging degree.The method includes: cutting off an insulating umbrella skirt from a root to prepare a test piece or scraping up RTV coating along an insulator, cleaning the natural dirt on the surface of the RTV coating, and placing in a room-temperature environment for 7 days; coating with artificial dirt with the same pollution degree and components; starting the hydrophobic migration tests, performing one hydrophobic migration test every other 12 hours in the first 96 hours, and performing one hydrophobic migration test every other 24 hours in the 96-196 hours; drawing hydrophobic migration curves for evaluating the performance and aging degree of silicone rubber.The method has the advantages that the curves are used for qualitatively evaluating the performance and aging degree of materials, the operation performance of the composite insulator and the RTV anti-pollution flashover coating can be reflected accurately, and advices are provided for the application strategy of the composite insulator and the RTV anti-pollution flashover coating; the method is simple, convenient to operate and capable of increasing work efficiency.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber hydrophobic migration test, in particular to a method for judging the aging degree of silicone rubber based on the hydrophobic migration test. Background technique [0002] Silicone rubber has good antifouling ability due to its hydrophobic migration, which is the key to the excellent antifouling performance of composite insulators and RTV coating insulators. The hydrophobic migration process is a description of the change process of the hydrophobic performance of the surface dirt layer of the silicone rubber material. Small molecule migration theory and macromolecular encapsulation theory are currently the mainstream viewpoints used to explain the hydrophobic migration process. The small molecule theory holds that the small molecule siloxane in silicone rubber that has not undergone cross-linking reaction migrates from the bulk to the dirt layer, and after the dirt layer absorbs these st...

Claims

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Application Information

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IPC IPC(8): G01N13/00G01R31/00
Inventor 吴明雷李隆基王永福邹淮李雪王希林杨朝翔
Owner STATE GRID TIANJIN ELECTRIC POWER
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