Silicone rubber (English name: Silicone rubber) is a silicon-oxygen polymer that can be obtained by controlling the length of the skeleton, the type of organic group and the crosslinking of the skeleton. The insulator is made of silicone rubber. Let me introduce the function of the silicone rubber insulator.
One end of the high-voltage wire connection tower is hung with a lot of disc-shaped insulators, which are used to increase the creepage distance, usually made of glass or ceramics, and are called insulators.
In order to prevent dirt such as floating dust from adhering to the surface of the insulator, a path is formed that is broken down by the voltage at both ends of the insulator, that is, creepage. Therefore, increasing the surface distance, that is, the creepage distance, and the distance that discharges along the insulating surface, that is, the leakage distance, is called the creepage distance. =Surface distance/system high voltage. Depending on the degree of pollution, a creepage distance of 31 mm/kV is generally used in heavily polluted areas.
Zero-value insulators refer to insulators whose potential distribution at both ends of the insulator is close to zero or equal to zero during operation.
Influence of zero-value or low-value insulators: The insulation of line wires depends on the insulator string. Due to manufacturing defects or external effects, the insulation performance of insulators will continue to deteriorate. When the insulation resistance decreases or is zero, it is called low-value or zero-value Insulators. We have tested the lines, and the proportion of zero or low value insulators is as high as about 9%. This is another main reason for the high rate of lightning tripping of the company's lines. The insulator is smooth, which can reduce the capacitive reactance between the wires to reduce the loss of current.
Insulators are special insulation controls that can play an important role in overhead transmission lines. In the early years, insulators were mostly used on utility poles, and gradually developed into a high-voltage wire connection tower with many disc-shaped insulators hanging on one end. Insulators should not fail due to various electromechanical stresses caused by changes in the environment and electrical load conditions, otherwise the insulator will not play a significant role and will impair the service and operating life of the entire line.
About silicone foam, please check the details:
https://www.siliconefoam.net/product-soft-cellular-silicone-iota-ht-870-.html