A multi-dimensional combined analysis method for the aging state of silicone rubber materials

Abstract

The invention discloses a multidimensional combined analysis method for analyzing the aging state of a silicone rubber material. The analysis method comprises following steps: producing a silicon rubber material according to a composite insulator formula; carrying out aging in a temperature range of 150 to 200 DEG C for 0 hour, 24 hours, 48 hours, 72 hours, and 96 hours respectively; taking out aset of samples for every 24 hours, cooling the samples to the room temperature, and after 24 hours, subjecting the sample to a scanning electron microscope test, a Fourier transform infrared spectroscopy test, a dielectric frequency spectrum test, and a thermal weight loss test. Through a certain mathematical and physical model, the data is processed, as the aging time increases, the prominently changed physical quantities are taken as the characteristic aging quantities; through the combined analysis on characteristic quantities, the change rules for representing the surface, interior, and overall characteristics of a material can be obtained, the aging state of a silicone rubber material can be accurately represented, and the aging evaluation result becomes more accurate.

Description

Technical field [0001] The invention relates to the field of research on the aging of insulating materials, in particular to a multidimensional joint analysis method for the aging state of silicone rubber materials. Background technique [0002] As an organic composite material, silicone rubber is a component of the umbrella skirt and sheath of the composite insulator, which protects the core rod from the atmospheric environment and provides the necessary creepage distance for the insulator. The composite insulator is subjected to long-term electrical stress, thermal stress and corrosion from the external environment during operation, which will accelerate the aging of the silicone rubber material. Accumulation of aging, and development to a certain stage will lead to accidents such as string drop and fracture of composite insulators, which seriously threaten the reliability of power system operation. [0003] The evaluation of the aging state of composite insulator silicone rubbe...

AI Technical Summary

Problems solved by technology

At present, the research on the aging of silicone rubber materials is mainly through the analysis of the change law of a single dimension parameter on the surface or inside of the material. On this basis, the aging mechanism and the relationship between the parameters have not been reasonably explained, and the aging characteristics obtained are not comprehensive enough. and accurate

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