An improved processing technology of type 1 slow-release long-lasting super-hydrophobic antifouling flashover coating

Abstract

The invention discloses a processing technology of an improved type 1 slow-release long-acting superhydrophobic anti-pollution flashover coating. The processing technology comprises the following steps of firstly, preparing hydroxypropyl-terminated fluorine-containing polysiloxane, hydrogen-terminated polysiloxane and hydrophobic gas phase white black carbon; adding the hydroxypropyl-terminated fluorine-containing polysiloxane, the hydrogen-terminated polysiloxane, silicone rubber 107, nanometer zinc oxide, oil amino oleate, nanometer calcium carbonate, decabromodiphenyl ether and talcum powder into a mixer, uniformly stirring, and grinding on a three-roll machine for 3 to 4 times, so as to obtain a uniform glue; then, adding the uniform glue into a kneading machine, adding the hydrophobic gas phase white black carbon, heating to 145 to 150 DEG C, kneading for 1 to 2h, cooling to 20 to 30 DEG C, adding a ketoxime type crosslinking agent, a silane coupling agent and an organic solvent, and uniformly stirring, so as to obtain the slow-release long-acting superhydrophobic anti-pollution flashover coating. The slow-release long-acting superhydrophobic anti-pollution flashover coating prepared by the processing technology has the advantages that by combining the hydroxypropyl-terminated fluorine-containing polysiloxane and the hydrogen-terminated polysiloxane, the purposes of slow release and pollution flashover prevention are realized; the hydrophobicity transfer of the coating is obviously improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an improved processing technology of type 1 slow-release long-acting super-hydrophobic antifouling flashover coating. Background technique [0002] Pollution flashover accidents involve a wide range of areas, and the power outage lasts for a long time, which seriously threatens the operation safety of power transmission and transformation equipment. Especially in winter, there are thousands of pollution flashover trips in the national power grid, sometimes almost causing the provincial power grid to be disconnected. The anti-fouling flashover measures are nothing more than four main measures: taking measures to adjust creepage, cleaning insulators, using synthetic insulators, and coating RTV paint (room temperature vulcanized silicone rubber). Comprehensive investigation and comparison of the above anti-fouling flashover measures, it can be seen that coating RTV paint is the mos...

AI Technical Summary

Problems solved by technology

[0003] However, although the introduction of RTV coatings has alleviated the increasingly serious pollution flashover problem in power systems, the performance of current RTV coatings is still low. First, the coatings have weak adhesion, poor wear resistance, and poor corrosion resistance. Due to poor adhesion, In the process of maintenance, the coating is easy to detach due to the action of external force; secondly, due to the problem of its own structure and composition, its own mechanical properties, such as elongation, breaking strength and tear strength are all low, and it is easy to be damaged during actual use. Peeling, cracking, and falling off occur; thirdly, the surface of the current RTV paint is easy to absorb and accumulate dust. When the loose dirt reaches a certain thickness, the inside of the dirt is easy to form water flow channels and large-area stagnation areas, and finally forms flashover channel, leading to the occurrence of pollution flashover events; in addition, because RTV coatings not only have to withstand the effects of electric field and wind force, but also bear the erosion of temperature changes, rain, snow, frost and sunlight, the performance of RTV coatings gradually decreases with time. Small, easy to age and short service life, requires regular maintenance or even re-spraying, which brings great limitations to its use

[0004] The preparation process of the current RTV coating is complicated, and the resulting coating has the above-mentioned problems. Therefore, a new type of anti-fouling flashover coating with high performance, slow release and long life has been developed in a targeted manner. The anti-pollution work of power grid lines has important practical significance, which can save a lot of construction funds and operation and maintenance costs, and create better social and economic benefits

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