Vinyl scale mastic Epoxy Mastic anticorrosive high temperature glass scale

  Our factory has summarized the advantages and disadvantages of traditional glass flakes
After years of practice and exploration, we have produced glass flake mastic with high temperature, high acid resistance and high adhesion, which has completely solved the above problems
According to the experience and lessons of several imported and domestic glass flake mastics that have failed in the corrosion prevention of mastic in acid resistant bricks in China, our factory adopts modified phenolic epoxy vinyl ester resin, with glass flakes as the main filler, barite as the modifier, adding anti sedimentation agent Using cobalt salt initiator, polymerization inhibitor and other additives and curing agent as raw materials, acid resistant glass flake mastic for acid resistant bricks and acid resistant glass flake mastic for steel cylinders have been produced
Compared with the traditional acid resistant glass flake mastic, it has the advantages of fine material, easy construction, easy filling of corrosive parts, high hardness, fast hardening speed, strong adhesion to acid resistant bricks and steel cylinders, high hardness, not easy to scratch, good corrosion resistance, high temperature resistance of 200 ℃, no cracking and foaming, and short construction cycle
After special proportioning, an anticorrosive coating with a thickness of 10mm--20mm can be achieved on the inner wall of the flue and chimney
The hardness of this anticorrosive coating can reach Mohs 7, and the service life can reach more than 20 years
It has been used in the flue and chimney of the thermal power branch of Ningxia Juxi vinyl chloride Co
, Ltd
, the flue and chimney of Jinzhou Datang International Thermal Power Co
, Ltd
, and the flue sulfur absorption tower of Shaanxi Datang Huxian No
2 power plant In order to meet the requirements of environmental protection, vinyl resin glass flake mastic mostly adopts wet contact acid gas to sulfuric acid (WSA) technology to solve the worries brought by acid gas
The process also has the characteristics of strong medium corrosivity, high temperature of treated flue gas, high solid content of SO2 absorption liquid, strong abrasiveness, large anti-corrosion area of equipment, high quality requirements of construction technology, and difficult maintenance after anti-corrosion failure
At present, the commonly used flue anti-corrosion materials include acid resistant brick acid resistant mastic, steel titanium composite structure, steel stainless steel composite structure, etc
, but they all have the disadvantages of large air leakage coefficient, loose sealing and high cost
Therefore, the development and use of a coating that can be used for a long time in the corrosive environment under the dew point of sulfuric acid is of great significance to solve the corrosion of sulfuric acid plant, improve its service life and reduce energy consumption
Vinyl resin glass flake mastic is a thermosetting polymer, which combines the excellent corrosion resistance and mechanical properties of epoxy resin, and has the process performance of rapid curing of unsaturated polyester resin
Vinyl ester resin is a kind of unsaturated resin with vinyl ester groups at both ends of the molecule and epoxy resin as the intermediate skeleton
At present, it has been widely used in the anti-corrosion field of chemical industry, metallurgy, construction and other departments of the national economy
In this study, aiming at the corrosive environment in the wet desulfurization device, phenolic epoxy vinyl ester resin is used as the main film-forming material, and the ratio of heat-resistant filler and glass flake is optimized, so that the coating has excellent mechanical properties and good corrosion resistance at 180 ℃, and the corrosion resistance of the coating in sulfuric acid solutions of different temperatures and concentrations is discussed to determine the heat-resistant temperature of the coating in sulfuric acid of different concentrations, It provides a basis for practical application
Performance characteristics: 1 Strong corrosion resistance
It has excellent chemical corrosion resistance, especially acid corrosion resistance
2
Excellent aging resistance
Its anti-aging property is higher than any paint film 3
Good temperature resistance
4
The coefficient of thermal expansion is small   5
Good wear resistance   6
It has good compatibility and can form anti-corrosion coating with various resins