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Anticorrosive flue paint

A technology of anti-corrosion coatings and flue, which is applied in the direction of anti-corrosion coatings, coatings, combustion product treatment, etc., and can solve the problems that acid resistance and heat resistance cannot be taken into account at the same time

Inactive Publication Date: 2008-07-30
湖南华迪电力环保工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency that the acid resistance and heat resistance of the above-mentioned anti-corrosion coating products cannot be taken into account at the same time, the present invention relates to a heat-resistant acid-resistant anti-corrosion coating for chimneys, which has good heat resistance and good acid resistance, and can be cured at a relatively low temperature use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0007] Example 1 raw materials a potassium silicate solution 100g, b silicon phosphate 7g, c flake glass 11g, d polymethyltriethoxysilane 2.5g, e hydrated silicon dioxide 4.5g, f carbon fiber 0.2g, g Chromium potassium sulfate 1g, h calcium aluminate 1.7g.

[0008] First, mix raw materials a, d, f, h as one group, then mix raw materials b, c, e, g as another group, then mix component A and component B, and apply it on the cement test board On the surface, heating can obtain a coating with a thickness of 400 μm, a temperature resistance of 350 ° C, and a corrosion resistance of dilute sulfuric acid.

example 2

[0009] Example 2 Raw materials a sodium silicate solution 100g, b condensed aluminum phosphate 8g, c flake mica 8g, d sodium methyl silicate 2.5g, e microsilica powder 2.5g, f borosilicate fiber 0.7g, g quartz Powder 13g, H Magnesium Aluminate 1.6g

[0010] Mix the raw materials a, d, and h evenly in one group, and mix the other group b, c, e, f, g evenly, and mix the two groups evenly, apply it on the steel test plate, heat and cure it, and obtain a 250μm, 400°C temperature-resistant , Sulfuric acid corrosion resistant coating.

[0011] The coating is a two-component coating, which is used for heat-resistant and dilute acid-resistant environments on the inner wall of the flue. The coating has a temperature resistance of 260-430°C and can withstand acidic media for a long time. Coating costs are lower.

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PUM

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Abstract

The anticorrosive flue paint consists of alkali metal silicate and organosilicon as filming agent 17.7-78 wt%, phosphate as curing agent in the amount of 0.1-17 wt% of the filming agent, fiber and scale as reinforcing material in the amount of 0.1-37 wt% of the filming agent, silica powder as grading stuffing in the amount of 0.1-91 wt% of the filming agent, and aluminate as micro swelling agent in the amount of 0.1-15 wt% of the filming agent. The paint includes two components and is used for inner wall of flue and similar hot and dilute acid corrosive environment.

Description

technical field [0001] The invention relates to a heat-resistant and acid-resistant anti-corrosion coating product, which is especially used in the environment of high temperature and dilute acid corrosion on the inner wall of a flue. Background technique [0002] It is well known that chimneys and flues have relatively high temperatures, as well as acidic and corrosive components. It is known that heat-resistant coating products such as silicone coatings and zinc-rich coatings have poor acid corrosion resistance; while coating products with better acid resistance such as phenolic coatings, furan coatings, and epoxy vinyl coatings have heat resistance within 200 °C Another kind of inorganic water glass cement product can reach more than 300 ℃ though heat-resistant, also has acid resistance, but there are many pores, the big deficiency of brittleness, can not be used as coating and use. The phosphate zinc-rich coating developed in literature [1] can withstand high temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/00C09D5/08F23J13/00
Inventor 朱中秋
Owner 湖南华迪电力环保工程技术有限公司