Superstrong hydrophobic self-cleaning material, production method thereof and composite insulator produced from superstrong hydrophobic self-cleaning material

Abstract

The invention relates to a superstrong hydrophobic self-cleaning material, a production method thereof and a composite insulator produced from the superstrong hydrophobic self-cleaning material. The superstrong hydrophobic self-cleaning material contains the following components in parts by weight: fluoroalkyl vinyl silicone rubber, pentyl silicone resin, phenyl polysiloxane, fluoroether polysiloxane, diphenyl silicon glycol, dimethyldiethoxysilane, alpha,omega-dialkoxy siloxane, amino siloxane, epoxy alkylsiloxane, a vinyl silane coupling agent, tetraethyl orthosilicate, high-reinforced white carbon black, titanium dioxide, aluminum hydroxide, manganese carbonate, zinc carbonate, antimony trioxide, mica powder, cadmium oxide, molybdenum disulfide, barium oxide, iron oxide, pigments and a peroxide curing agent. The production method of the superstrong hydrophobic self-cleaning material comprises the following steps: (1) carrying out closed refining; (2) carrying out secondary refining; (3) mixing until the materials are uniform; (4) preparing a rubber blank; (5) preparing mixed rubber; and (6) preparing a mixed rubber sheet. The mixed rubber sheet can be used for preparing the composite insulator.

Description

technical field [0001] The invention belongs to the field of composite insulators, and in particular relates to a super-hydrophobic self-cleaning material, a production method thereof and a composite insulator produced with the material. Background technique [0002] Composite insulators have been in trial operation in my country's power grid for nearly 30 years, and have been used in large quantities for more than 15 years. Composite insulators have formed an application situation that exceeds half of the amount of ceramic insulators or tempered glass insulators in the power grid. Power grid system equipment is often exposed to different pollution conditions during long-term operation, and the operating environment is very harsh. While providing the necessary internal and external insulation, composite insulators have the advantage over traditional ceramic insulators or tempered glass insulators that they are hydrophobic, which enables composite insulators operating under d...

AI Technical Summary

Problems solved by technology

In particular, conventional composite insulator sheds have weak hydrophobicity, and their hydrophobicity rapidly decreases or even loses after operating in heavily polluted areas. The performance is lower than the electrical performance of ceramic insulators and tempered glass insulators of the same size, which seriously endangers the operation safety of the power grid system

[0004] Under outdoor operating conditions, the surface pollution of ceramic insulators and tempered glass insulators can be removed to a certain extent by rainwater and strong winds, while conventional composite insulators are weakly hydrophobic and prone to electrostatic adsorption on the surface, showing different material pollution Due to the difference in coefficients, the pollution is serious in a dirty environment, causing scaling, etc. In actual operation, due to the aggravation of pollution and the loss of hydrophobicity of composite insulators, arc discharge often occurs, and pollution flashover accidents also occur from time to time

[0005] Composite insulators on running transmission lines are easy to absorb pollution, especially the adsorption effect of composite insulators on DC transmission lines is superimposed, so the pollution of DC composite insulators after operation is more serious and can never be cleaned.

After running for a period of time, the surface of composite insulators used in DC systems often forms permanent stubborn dirt, and the hydrophobicity of the umbrella cover is lost, which brings higher safety risks than composite insulators used in AC systems.