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 Th

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

Experimental program
Comparison scheme
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Example Embodiment

[0030] Example 1

[0031] The present embodiment provides a kind of inorganic high-temperature resistant paint of ethyl orthosilicate, the mass percentage of each component is: ethyl orthosilicate 28%; heat-resistant pigments and fillers: 35%; additives: 3%, dimethyl Formamide: 15%, of which:

[0032] Heat-resistant pigments and fillers include:

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

[0034] The barrier type functional filler includes the following components in parts by mass:

[0035] Hollow glass beads: 3 parts, graphite: 12 parts, black silicon carbide: 2444 parts, fine-crystalline alumina: 26 parts, molybdenum disulfide: 6 parts, zinc oxide: 3 parts, talc: 4 parts;

[0036] The auxiliary agent includes the following components in parts by mass:

[0037] Dispersant: 12 parts, wetting agent: 3 parts, curing agent 26 parts, matting agent: 3 parts, film fo...

Example Embodiment

[0042] Example 2

[0043] The present embodiment provides a kind of inorganic high-temperature resistant paint of ethyl orthosilicate, the percentage of each component by mass is: ethyl 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, of which,

[0044] Heat-resistant pigments and fillers include:

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

[0046] The barrier type functional filler includes the following components in parts by mass:

[0047] Hollow glass beads: 4 parts, graphite: 11 parts, black silicon carbide: 26 parts, fine-crystalline alumina: 26 parts, molybdenum disulfide: 6 parts, zinc oxide: 4 parts, talc: 4 parts;

[0048] The auxiliary agent includes the following co...

Example Embodiment

[0054] Example 3

[0055] The preparation method of the ethyl orthosilicate inorganic high temperature resistant coating provided in this embodiment includes the following steps:

[0056] (1) Hydrolyze ethyl orthosilicate to prepare the base material. The specific operation is: adjust the temperature of the water bath to 45°C, stir and mix 32% by mass of ethyl orthosilicate and the silane coupling agent. The mass ratio of coupling agent to ethyl orthosilicate is 1:15, and then slowly add dropwise a mixture of water, ethanol and hydrochloric acid, and heat and stir in a water bath for 2 hours. The mass of water is half the mass of ethyl orthosilicate. One, the mass of ethanol is a quarter of the mass of ethyl orthosilicate, and the mass ratio of hydrochloric acid to ethyl orthosilicate is 0.6:1;

[0057] (2) Mix 32% by mass of ethyl orthosilicate hydrolyzed base material and 45% by mass of heat-resistant pigments and fillers, then stir and disperse at a stirring speed of 300 rpm, sti...

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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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