Preparation method of temperature-resistant ultrathin external wall insulation coating

Abstract

The invention discloses a preparation method of a temperature-resistant ultrathin external wall insulation coating. The temperature-resistant ultrathin external wall insulation coating is used for thermal insulation of crude oil, heavy oil and residual oil storage tanks and building external walls and is prepared from 70-300 parts of a resin emulsion, 20-50 parts of pigments, 30-80 parts of filler, 0.1-1 part of a rare earth oxide, 13-40 parts of an aid and 100-300 parts of water. According to the preparation method, by means of the high flowability and the film-forming property of special monomer modified self-crosslinked acrylate copolymers as well as the high stability, the low heat conductivity and the heat storage property of rare earth oxide, high-temperature resistance, elasticity and anti-ageing resistance are formed, the temperature-resistant ultrathin insulation coating is prepared and has a thin coating layer only about 1-3 mm thick, the heat efficiency of a heating furnace can be improved by 1.5% or above, the heat dissipation loss of the outer surface of a furnace body is decreased by not less than 40%, the coating can resist 150 DEG C after being cured, and the temperature-resistant ultrathin external wall insulation coating is high in adhesive force and good in ductility and corrosion resistance and can be widely applied to thermal insulation of the crude oil, heavy oil and residual oil storage tanks and the building external walls.

Description

technical field [0001] The invention relates to a preparation method of a temperature-resistant ultra-thin exterior wall thermal insulation coating. Background technique [0002] With the acceleration of the development of industrialized production in our country, it has greatly promoted economic development. First of all, my country has become the world's largest energy-consuming country. In 2013, my country's apparent consumption of crude oil was 487 million tons, and the apparent consumption of gasoline and diesel reached 264 million tons. Oil refining enterprises across the country need to heat the crude oil, heavy oil, and residual oil storage tanks with steam to ensure the fluidity of the oil products. The floating plate on the top of the crude oil tank is the main part of heat loss, but the heavy conventional insulation method will Exceeding the load of the floating plate will affect the safe operation of the equipment and consume a lot of water and standard coal. ...

AI Technical Summary

Problems solved by technology

[0003] Secondly, in the steam pipelines of chemical, metallurgical, electric power and other enterprises, rock wool insulation is basically used. The disadvantages of this insulation method are: toxicity, poor interface sealing, high heat bridge loss, and easy corrosion of pipelines, etc.

[0005] At present, the total amount of various crude oil, heavy oil, and residual oil storage tanks in my country is more than 800 million tons, and most of them use traditional rock wool, silicate and other insulation materials, as well as silicon carbide or zirconia with better fire resistance as the main components. Insulation with inorganic coatings made of water glass as a binder. Its main problems are: rock wool, silicate and other insulation materials have poor moisture-proof and waterproof performance, and the insulation performance is greatly reduced due to moisture, which seriously corrodes the tank body. , especially in coastal areas, the outer insulation steel plate of the tank is often blown off by strong winds, and the insulation life is short. If it is more than 8 mm, the spraying time and material cost are relatively high; the second is that the aging speed of this inorganic coating is fast, the coating is prone to cracking and bubbling, the radiation protection ability is not durable, and the thermal insulation performance of the coating decreases rapidly.