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Protective coating for inner cabin of seawater desalination evaporator

A technology of protective coatings and evaporators, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as corrosion protection problems that have not been effectively solved, and achieve enhanced anti-corrosion capabilities, long anti-corrosion life, and extended penetration The effect of the pathway

Inactive Publication Date: 2018-06-29
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign room temperature curing coatings have been used for corrosion protection of carbon steel evaporator shells, but the corrosion protection problems in this field have not been effectively solved in China

Method used

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  • Protective coating for inner cabin of seawater desalination evaporator

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Effect test

Embodiment 1

[0028] A protective coating for the inner compartment of a seawater desalination evaporator, obtained by mixing components A and B during use. According to mass percentages, the component A consists of 25% phenolic modified epoxy resin, 50% pigments and fillers, 17% xylene, 5% fumed silica, 1% phosphate-modified acrylic leveling agent, 1.5% dispersant BYK-110 and 0.5% 6800, the B component is modified poly Amide, whose mass is 20% of the total mass of component A; the pigment and filler are mixed with a mass ratio of 1:2 for coloring pigment and body filler, wherein, the color pigment is aluminum powder paste, and body filler is mica powder.

Embodiment 2

[0030] A protective coating for the inner cabin of a seawater desalination evaporator, which is obtained by mixing components A and B during use. According to the mass percentage, the component A is composed of 45% bisphenol A epoxy resin, 37% pigments and fillers, 12 % of acetone, 2.5% of organic bentonite, 1.5% of fluorine-modified acrylic leveling agent, 0.5% of BYK-163 and 1.5% of 6600. The B component is cardanol, and its quality is A group 40% of the total mass; the pigment and filler are mixed with a coloring pigment and a body filler at a mass ratio of 1:3, wherein the coloring pigment is aluminum powder paste, and the body filler is mica powder.

Embodiment 3

[0032] A protective coating for the inner cabin of a seawater desalination evaporator, which is obtained by mixing components A and B during use. According to the mass percentage, the component A is composed of 35% bisphenol F epoxy resin, 42.5% pigments and fillers, 20 % of butanone, 0.5% of phosphate modified acrylic leveling agent, 1% of dispersant BYK-110 and 1% of BYK-066 are mixed, and the B component is modified fatty amine, and its mass is 30% of the total mass of component A; the pigments and fillers are mixed with coloring pigments and body fillers at a mass ratio of 1:4, wherein the coloring pigments are aluminum paste, and the body fillers are mica powder.

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Abstract

A protective coating for an inner cabin of a seawater desalination evaporator is obtained by mixing a component A and a component B when in use. The component A is formed by mixing 25-45% of epoxy resin, 25.5-50% of a pigment filler, 10-20% of a solvent, 0-5% of a thixotropic agent, 0.5-1.5% of a leveling agent, 0.5-1.5% of a dispersant and 0.5-1.5% of a defoamer, and the component B is a curing agent with the amount 20-40% of the mass of the component A. With use of phenolic resin modified epoxy resin and a modified polyamide curing agent, a heat-resistant, anticorrosion and high-attaching substrate can be produced; at the same time, with use of mica, aluminum powder slurry and other flaky anticorrosion pigment filler, a coating layer produces a micro-grid structure on the basis of the obstructing effect of the flaky filler, prolongs the permeation way of water or Cl-1, thereby enhancing the corrosion resistance of a coating layer; with combination of the two components, the special anticorrosion coating layer has the characteristics of hot seawater corrosion resistance, strong toughness, high adhesion and the like, so that the coating layer is guaranteed to have a long anticorrosion life.

Description

technical field [0001] The invention relates to an organic coating in the field of chemical materials, in particular to a protective coating for an inner cabin of a seawater desalination evaporator. Background technique [0002] At present, commercialized seawater desalination devices mainly include low-temperature multiple-effect distillation devices, multi-stage flash evaporation devices, reverse osmosis desalination devices, and electrodialysis devices. [0003] The low-temperature multi-effect distillation device was developed by IDE Company in Israel in the 1970s. It is one of the mainstream commercial technologies at present. Its large evaporator is made of carbon steel and protected by EPOXY 4230 epoxy anti-corrosion coating system, which can extend the carbon steel substrate. Anti-corrosion life of more than 10 years. [0004] The corrosion protection technology of multi-stage flash evaporation unit has many foreign manufacturers with mature technology. Japan's Mit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61
CPCC08K2003/0812C08K2003/2272C08K2003/3045C08K2003/327C08L2205/025C08L2205/03C08L2205/035C09D5/103C09D163/00C08L77/00C08K13/02C08K3/34C08K3/08C08L63/00C08K3/22C08K3/346C08K3/32C08K3/30
Inventor 张黎黎陈凯锋亓海霞梁宇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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