High temperature oxidation of carbon refrater-resistant materials is protected by high temperature antioxidant coatings

China Coatings Online News Information:
The oxidation of carbon refraed material mainly occurs in its sidewall area, according to the theory of carbon material oxidation, carbon refratric material oxidation reaction is divided into three different temperature zones. High temperature coating research and development research surface, the first and second reaction temperature zone is about 500 to 1000 degrees C, called low temperature oxidation zone, carbon refracing material loss only accounts for less than 2% of the total consumption, more than 1000 degrees C for the third reaction temperature zone, called high temperature oxidation zone, high temperature oxidation loss is low temperature oxidation loss of 20 to 50 times. Therefore, to prevent the oxidation loss of carbon refracable materials should mainly study the high temperature oxidation area. Carbon refracertic materials with ZS-1021 graphite high temperature antioxidant coatings are different from other uses of refractic coatings.
General refraction coating has a certain porosity rate, can not effectively prevent carbon refraction material around oxygen and graphite oxidation reaction, as carbon refraction material antioxidant coating ZS-1021 graphite high temperature antioxidant coating curing good, Tight, and graphite, porous materials have both physical adhesion and chemical bridge, and the substation formed an integrated structure, good adhesion, heat expansion and cold shrink has a good self-healing repair capacity, anti-slag and high temperature debris erosion and penetration erosion. The anti-oxidation of carbon refractable material can be summarized in two points, that is, ZS-1021 graphite high temperature antioxidant coating in the use of conditions of isolation, to avoid or weaken the carbon refractant material and oxygen atmosphere of contact, to prevent or slow down the carbon refractant material high temperature oxidation. Secondly, the anti-oxidation coating fills the pores on the surface of the carbon refracing material, preventing or slowing the oxidation loss of the surface layer of the carbon refracerable material. The result is a durable, isolated protective layer under conditions of use.
at the same time its characteristics are: (1), ZS-1021 graphite high-temperature antioxidant coating fire resistance, that is, in the arc furnace steelmaking conditions should have high temperature resistance performance, to ensure that at high temperature requirements for other properties, long-term temperature resistance up to 2600 degrees C.
(2), ZS-1021 graphite high temperature antioxidant coating is not breathable. An impermeable coating can be formed on the surface of a carbon refraed material at a temperature of use. ZS-1021 graphite high temperature antioxidant coating in the use of temperature to form a glass film, to block the carbon refrater surface oxygen source. And this glass thin layer is fire-resistant at high temperatures, not flowing coating.
(3), ZS-1021 graphite high-temperature antioxidant coating high conductivity, for carbon refractive material clamps need high conductivity, the antioxidant coating conductivity is higher than the carbon refractant material itself and copper carbon refractant clip conductivity.
(4), ZS-1021 graphite high-temperature antioxidant coating high adhesion, due to the non-wetting properties of carbon refracering materials, ZS-1021 graphite high-temperature antioxidant coating at high and low temperatures have a high bonding strength, to ensure that the coating has high antioxidant capacity premise, while making the coating has a good mechanical impact and thermal impact performance, in the use of conditions do not peel.
(5), ZS-1021 graphite high temperature antioxidant coating construction is easy, does not pollute copper water and environment, low cost.
results of many high temperature conditions have proved that carbon refracerable anti-oxidation coatings greatly reduce the oxidation loss of carbon refrasive materials, especially between carbon refracing materials and furnace top oxidation loss. Carbon refrater-resistant materials using ZS-1021 graphite high-temperature antioxidant coatings, can save a lot of carbon refrater costs, and the larger the capacity of the furnace, the greater its energy-saving potential, so ZS-1021 graphite high-temperature antioxidant coatings in preventing carbon refrater-resistant material oxidation, reduce carbon refracertic material loss, extend the life of carbon refrater-resistant materials have a clear effect.