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Tetraethylorthosilicate inorganic high-temperature-resistant coating and preparation method thereof

A technology of ethyl orthosilicate, inorganic high temperature resistance, applied in anti-corrosion coatings, coatings, etc., can solve the problems of passive film damage on metal surfaces, corrosion of metal facilities, etc., and achieve the effect of reducing the tendency of cracking

Inactive Publication Date: 2014-12-17
JIANGSU MARINE VICTORY COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The steel structure in the atmospheric environment is affected by sunlight, wind and sand, rain and snow, frost and dew, and temperature and humidity changes throughout the year, among which oxygen and moisture in the atmosphere are important factors that cause corrosion of outdoor steel structures, causing electrochemical corrosion; industrial The gas contains SO2, CO2, NO2, CI2, H2S and NH3, etc. Although the content of these components is small, the corrosion hazards to steel cannot be ignored, among which SO2 has the greatest impact, and CI2 can destroy the passivation film on the metal surface ; These gases dissolve in water and become acidic, forming acid rain and corroding metal facilities

Method used

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  • Tetraethylorthosilicate inorganic high-temperature-resistant coating and preparation method thereof
  • Tetraethylorthosilicate inorganic high-temperature-resistant coating and preparation method thereof
  • Tetraethylorthosilicate inorganic high-temperature-resistant coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A tetraethyl orthosilicate inorganic high-temperature-resistant coating provided in this example has the following mass percentages of its components: 28% orthoethyl silicate; heat-resistant pigments and fillers: 35%; additives: 3%, dimethyl Formamide: 15% of which:

[0032] Heat-resistant pigments and fillers include:

[0033] Nano silicon dioxide, barrier type functional filler and aluminum powder and the mass ratio of nano silicon dioxide, barrier type functional filler and aluminum powder is 1.5:1:1;

[0034] Barrier functional fillers include the following components in parts by mass:

[0035] Hollow glass microspheres: 3 parts, graphite: 12 parts, black silicon carbide: 2444 parts, fine-grained alumina: 26 parts, molybdenum disulfide: 6 parts, zinc oxide: 3 parts, talcum powder: 4 parts;

[0036] Auxiliaries include the following components in parts by mass:

[0037] Dispersing agent: 12 parts, wetting agent: 3 parts, curing agent: 26 parts, matting agent: 3 pa...

Embodiment 2

[0043]A tetraethyl orthosilicate inorganic high-temperature-resistant coating provided in this example has the following percentages by mass of each component: tetraethyl orthosilicate 32%; heat-resistant pigments and fillers: 49%; additives: 3%, two Methylformamide: 16%, heat-resistant pigments and fillers are nano-silica and aluminum powder, the mass ratio of nano-silica and aluminum powder is 1.5:1, wherein,

[0044] Heat-resistant pigments and fillers include:

[0045] Nano silicon dioxide, barrier type functional filler and aluminum powder and the mass ratio of nano silicon dioxide, barrier type functional filler and aluminum powder is 1.5:1:1;

[0046] Barrier functional fillers include the following components in parts by mass:

[0047] Hollow glass microspheres: 4 parts, graphite: 11 parts, black silicon carbide: 26 parts, fine-grained alumina: 26 parts, molybdenum disulfide: 6 parts, zinc oxide: 4 parts, talcum powder: 4 parts;

[0048] Auxiliaries include the follo...

Embodiment 3

[0055] The preparation method of a kind of tetraethyl orthosilicate inorganic high-temperature-resistant coating provided by the present embodiment comprises the following steps:

[0056] (1) Prepare the base material by hydrolyzing tetraethyl orthosilicate. The specific operation is as follows: adjust the temperature of the water bath to 45°C, stir and mix 32% by mass of tetraethyl orthosilicate and the silane coupling agent evenly, and the silane The mass ratio of coupling agent to tetraethyl orthosilicate is 1:15, then slowly add a mixture of water, ethanol and hydrochloric acid dropwise, heat and stir in a water bath for 2 hours, wherein the mass of water is half of the mass of tetraethyl orthosilicate One, the quality of ethanol is 1 / 4th of tetraethyl orthosilicate quality, and the mass ratio of the quality of hydrochloric acid and tetraethyl orthosilicate is 0.6:1;

[0057] (2) After mixing 32% by mass of tetraethyl orthosilicate hydrolyzed base material and 45% by mass ...

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Abstract

The invention discloses a tetraethylorthosilicate inorganic high-temperature-resistant coating. The tetraethylorthosilicate inorganic high-temperature-resistant coating comprises the following components in percentage by mass: 28-35% of tetraethylorthosilicate, 35-50% of heat-resistant pigment and filler, 2%-4% of additives and 13-18% of dimethylformamide, wherein the heat-resistant pigment and filler comprises nano-silicon dioxide, a blocking type functional filler and aluminum powder in the mass ratio of 1.5 to 1 to 1. The invention further designs a preparation method of the tetraethylorthosilicate inorganic high-temperature-resistant coating. According to the tetraethylorthosilicate inorganic high-temperature-resistant coating and the preparation method thereof designed by the invention, the adhesion and the hardness of a cured film formed after heat curing of the coating can be significantly improved along with increase in temperature, the adhesion achieves grade one, the pencil hardness is more than 6H, the high temperature above 800 DEG C can be resisted and the cracking tendency of the coated film is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of special coatings, in particular to a tetraethyl orthosilicate inorganic high-temperature-resistant coating and a preparation method thereof. Background technique [0002] The steel structure in the atmospheric environment is affected by sunlight, wind and sand, rain and snow, frost and dew, and temperature and humidity changes throughout the year, among which oxygen and moisture in the atmosphere are important factors that cause corrosion of outdoor steel structures, causing electrochemical corrosion; industrial The gas contains SO2, CO2, NO2, CI2, H2S and NH3, etc. Although the content of these components is small, the corrosion hazards to steel cannot be ignored, among which SO2 has the greatest impact, and CI2 can destroy the passivation film on the metal surface ; These gases dissolve in water and become acidic, forming acid rain and corroding metal facilities. [0003] The ocean atmosphere is charac...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12C09D5/08
Inventor 郑化陈廷生刘小林
Owner JIANGSU MARINE VICTORY COATING
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