Zinc-aluminum coating applied to steel transformer radiator surface and preparation method thereof

Abstract

The invention relates to a steel transformer radiator surface protection technique, particularly a zinc-aluminum paint applied to a steel transformer radiator surface and a preparation method thereof. The zinc-aluminum paint comprises the following components in percentage by weight: 20-60% of flaky metal zinc powder, 5-20% of flaky metal aluminum powder, 10-30% of modified epoxy resin, 10-20% of diluter, 1-5% of silane coupling agent, 1-5% of titanate coupling agent, 1-5% of surfactant, 1-3% of rusty scale conversion agent and 0.2-1% of antisettling agent. The preparation method comprises the following steps: wetting the flaky aluminum powder with the diluter, adding the titanate coupling agent and silane coupling agent, mixing to obtain an aluminum paste, adding the modified epoxy resin, flaky zinc powder, surfactant, rusty scale conversion agent and antisettling agent, and stirring uniformly to finally obtain the finished product zinc-aluminum paint. The zinc-aluminum paint can be cured at room temperature, is easy to repair, has favorable outdoor application effect, and implements long-acting protection on the transformer radiator on the premise of not influencing the radiation efficiency.

Description

technical field [0001] The invention relates to a surface protection technology for a steel transformer radiator, in particular to a zinc-aluminum coating applied to the surface of a steel transformer radiator and a preparation method thereof. Background technique [0002] With the rapid development of my country's power industry, the demand for power facilities is increasing, and the requirements for the safe operation of the power grid are becoming more and more stringent. Therefore, the requirements for corrosion resistance and stability of power facilities are getting higher and higher. Power facilities have extended to almost all coastlines and islands in my country, and the harsh atmosphere of the marine climate has put forward higher requirements for the corrosion resistance of power facilities. The excellent corrosion resistance of power facilities is one of the important guarantee factors for the reliable and long-term operation of power systems. However, the corro...

AI Technical Summary

Problems solved by technology

[0004] Chip radiators mostly adopt chip structure, which is characterized by thin materials, multi-layer superimposed structure of empty shells, and large difference in three-dimensional rigidity. At present, most of them are protected by hot-dip galvanizing, but hot-dip galvanizing has the following disadvantages: 1) The size of the workpiece is limited; 2) the heat sink is easy to deform; 3) the galvanized layer is easy to hang, and the thickness of the coating cannot be accurately controlled; 4) the pre-treatment requirements are strict; 5) it is difficult to realize outdoor and on-site construction; 6) the protection of hot-dip galvanizing Limited lifespan and high maintenance costs

Generally, it can only guarantee the protection life of 3 to 5 years, which adds difficulties to overhaul and daily maintenance, and also increases maintenance costs.