Nano-reinforced RTV long-lasting antifouling paint and producing process thereof

Abstract

An RTV long-acting anti-pollution flashover paint of nano intensive style used in the insulating surface outside the insulator of electric power appliances, and the method for producing it. The dispense comprises the following components (weight percent): nana SiO2 for 2-6 percent; hydroxy-terminated dimethyl silicone polymer for 20-40 percent; cross linker for 1-6 percent; catalyst for 0.02-1 percent; solvent for 30-70 percent; pigment for 1-2 percent. The producing steps as follows: mixed reacting hydroxy-terminated dimethyl silicone polymer and cross linker and catalyst; adding nano SiO2 into the autoclave for strring to 100-150 Deg.C, dewatering it in the condition of vaccum and loading it in the sealed metal drum; adding solvent and pigment to mix homogeneously, after a filtering treatment, placing it in an air-tight container. The coating by the invention is provided with fine thixotropic property, and the ability of ultraviolet absorption and infrared ray reflection, so the mechanical strength improved dramatically, the rate of hydrophobic mobility increased, and the property of anti-pollution flashover improved further.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and further relates to a nano-reinforced RTV long-term anti-pollution flashover coating used on the outer insulating surface of a porcelain insulator of power transmission and transformation equipment and a production process thereof. Background technique [0002] Coating RTV anti-fouling flashover paint on the outer surface of porcelain insulation of power transmission and transformation equipment can prevent the formation of a continuous water film on the porcelain surface and can significantly increase the pollution flashover voltage of the external insulation of the equipment. This has been recognized by domestic and foreign power operation experience confirmed. The "Twenty-five Key Requirements for Preventing Major Accidents in Electric Power Production" promulgated by the former State Power Corporation on September 29, 2000 clearly affirmed RTV anti-pollution flashover coatings as...

AI Technical Summary

Problems solved by technology

[0006] 1. The coating has no thixotropy, and its anti-sagging is poor, so the phenomenon of flowing and drawing during coating is serious, resulting in waste, and making the coating thin on the top and thick on the bottom, the construction quality is not high, and it is difficult to reach the required thickness, which affects Anti-fouling flashover performance of coatings

[0007] 2. The long-term performance of the coating is poor

The reason is that the adhesion of the coating is poor, the mechanical strength is not high, the hydrophobic migration is reduced, the UV resistance of the coating is low, and the weather resistance is poor.