Method for determining aging criterion of silicone rubber insulating material
A technology of silicone rubber insulation and determination method, which is applied in the direction of analyzing materials, thermal analysis of materials, measuring devices, etc.
Pending Publication Date: 2021-08-31
CHINA ELECTRIC POWER RES INST +1
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[0003] In view of this, the present invention proposes a method for determining the aging criteria of silicone rubber insulating materials, aiming at solving the problem of how to determine the aging criteria of silicone rubber insulating materials in the prior art
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[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0027] refer to figure 1 , the method for determining the aging criterion of the silicone rubber insulating material in the embodiment of the present inventi...
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The invention provides a silicone rubber insulation material aging criterion determination method. The method comprises steps of carrying out surface treatment on a to-be-detected silicone rubber sample, heating to a set temperature, and measuring a thermal degradation curve of the to-be-detected silicone rubber sample material; calculating activation energy data at different reaction depths according to related test data in the activation energy curve of the to-be-tested silicone rubber sample material to obtain a change curve of the activation energy of the to-be-tested silicone rubber sample material along with the reaction depths; and determining the aging criterion of the to-be-tested silicone rubber insulating material according to the change curve of the activation energy of the to-be-tested silicone rubber sample material along with the reaction depth. The method can accurately and effectively determine the activation energy data of the to-be-tested silicone rubber material, and judges the aging degree of the silicone rubber for electric power according to the value of the activation energy, so reference is provided for the replacement scheme of front-line operators, and basis is provided for researching the chemical reaction kinetic process of silicone rubber degradation at the same time.
Description
technical field [0001] The invention relates to the technical field of high-voltage transmission lines, in particular to a method for determining aging criteria of silicone rubber insulating materials. Background technique [0002] As a common material for withstand voltage and sealing in transmission lines, silicone rubber insulating materials play a key role in line insulation and equipment sealing. Activation energy, as an important index that can reflect the difficulty of chemical reactions, is of great significance in chemical reactions. Accurately obtaining the activation energy of insulating materials can characterize the aging degree of insulating materials from the physical and chemical properties of insulating materials. Currently, for ordinary rubber Life expectancy can be measured by thermal gravimeter to measure the activation energy of chemical reactions, but for silicone rubber materials: (1) In the actual application of the power industry, anaerobic degradati...
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IPC IPC(8): G01N25/00G01R31/00
CPCG01N25/00G01R31/003
Inventor 邓禹方泳皓周军杜怡君周松松于昕哲
Owner CHINA ELECTRIC POWER RES INST