Anticorrosion thermal insulation heat reflecting paint for storage tank and preparation method thereof

Abstract

The invention discloses an anticorrosion thermal insulation heat reflecting paint for a storage tank and a preparation method thereof. The paint comprises primer and finishing coat, wherein the primer comprises a component A and a component B, the weight ratio of the component A to the component B is (2-8):1, the molar ratio of epoxy group of the component A to reactive hydrogen of the component B is 1:1, the component A and the component B are mixed for use, the finishing coat comprises another component A and another component B, the weight ratio of the component A to the component B is as shown in the specification, the molar ratio of content of hydroxy in the component A to content of NCO in the component B is 1:1, and the component A and the component B are mixed for use. The paint has excellent corrosion resistance, according to national standard, after a cold-roll steel sheet is coated with thermal insulation anticorrosion paint and is maintained, a neutral salt spray test is carried out on the steel sheet for 1000 hours, and then the test shows that the sample does not have corrosion phenomena like blistering and peeling off, so that the paint has a good effect in protecting the surface of the steel from being corroded, and also has good chemical resistance.

Description

technical field [0001] The invention relates to industrial heavy-duty anti-corrosion heat-preservation materials, in particular to a heat-retaining heat-reflecting coating and a preparation method thereof, which comprises an anti-corrosion primer and heat-preserving heat-reflecting weather-resistant topcoat. Background technique [0002] Oil and gas storage tanks in the petrochemical refining industry continuously build up energy when exposed to sunlight, causing their surfaces and interiors to heat up rapidly. In order to reduce the increase in internal pressure due to temperature rise, it is necessary to frequently open the air release valve or spray with cold water, which will aggravate product loss and air pollution. However, when the internal pressure of the transportation storage tank is too high, it may even cause an explosion, which brings huge safety hazards to storage and transportation. [0003] In recent years, due to global climate change and the greenhouse eff...

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional water spray cooling method is that the rust in the water pipe and the dirt brought by recycling will adhere to the outer wall of the oil tank. On the one hand, the tank wall will become moldy, rusted, and even grow microorganisms, shortening the use of equipment. On the other hand, the dirt makes the color of the tank wall darker, which intensifies the local absorption of sunlight and causes local heating

[0007] Patent application number: 200710035834.6 discloses a heat-retaining heat-reflecting coating, which consists of two layers of coatings, which are respectively composed of heat-preserving primer and heat-reflecting surface coating, wherein hollow microspheres and adhesive resin are added to the primer layer, and the surface coating The layer is made of metal oxide-coated mica material as a heat reflective material, and its overall coating has a certain thermal insulation and heat reflection effect, but its undercoat does not consider the anticorrosion requirements of steel storage tanks, and its top coat does not consider the coating's resistance to corrosion. Staining performance

has certain limitations

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