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

A technology of multi-dimensional combination and analysis method, which is applied in the field of multi-dimensional joint analysis of the aging state of silicone rubber materials, can solve the problems of unreasonable elaboration of the relationship, insufficient comprehensiveness and accuracy of aging characteristics, etc., and achieve the effect of accurate evaluation of aging state and comprehensive factors

CN108303366BActive Publication Date: 2020-08-18SOUTH CHINA UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-08-18

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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.
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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...

Examples

Embodiment

[0033] Such as figure 1 As shown, a multi-dimensional joint analysis method for aging characteristics of silicone rubber materials includes the following steps:

[0034] S1. Prepare the silicone rubber test piece according to the usual formula of composite insulators. In order to accelerate the aging process, the aging time is 0h, 24h, 48h, 72h, and 96h, and 1 is taken out every 24h. A group of silicone rubber samples, each group of silicone rubber samples contains 3 pieces of silicone rubber test pieces; the length and width of the silicone rubber test pieces are 130mm×120mm×2mm respectively.

[0035] S2, cool to room temperature, and perform scanning electron microscopy analysis on the silicone rubber sample after 24 hours to visually reflect the changes in the surface micro-morphology of the silicone rubber test piece; in order to obtain the quantitative characterization of the surface morphology of the sample, first perform the SEM image of the sample Binary processing, and the...