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Aqueous high-modulus inorganic zinc-rich coating added with catalyst

A technology of inorganic zinc-rich coatings and high modulus, applied in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc., can solve the problems of poor stability and uneven particle size distribution, and achieve good mechanical properties and particle size distribution Uniform, easy construction effect

Inactive Publication Date: 2018-03-27
林家天
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is that the high modulus silicate water-based inorganic zinc-rich coating liquid component is prone to problems such as uneven particle size distribution and poor stability during the preparation process. , to catalyze the reaction between potassium silicate solution and aluminum-modified silica sol, and improve the uniformity of colloidal particles after the reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the present embodiment, the high-performance water-based inorganic zinc-rich paint comprises the following components:

[0027] Lithium silicate solution 10%

[0028] water 20%

[0029] Aluminum modified silica sol 34.5%

[0030] Tetraethylammonium hydroxide catalyst 0.5%

[0031] Lauryl Glycolamide 5%

[0032] Silane coupling agent 5%

[0033] Silicone acrylic emulsion 5%

[0034] Superfine zinc powder 20%

[0035] The preparation method of above-mentioned waterborne inorganic zinc-rich paint comprises the steps:

[0036] (1) Take 100g of lithium silicate solution with a percentage concentration of 3% and pour it into a container, add 200g of water to stir, and heat up to 50°C;

[0037] (2) Then add 5g of tetraethylammonium hydroxide catalyst, stir and reflux for 4h;

[0038] (3) Slowly add 345 g of aluminum-modified silica sol with a molar content of 0.5% dropwise, and stir and reflux for 4 h;

[0039] (4) Then lower the system temperature to 20°C, and slo...

Embodiment 2

[0042] In the present embodiment, the high-performance water-based inorganic zinc-rich paint comprises the following components:

[0043] Lithium silicate solution 20%

[0044] water 15%

[0045] Aluminum modified silica sol 30%

[0046] Tetraethylammonium hydroxide catalyst 2%

[0047] Lauryl Glycolamide 10%

[0048] Silane coupling agent 8%

[0049] Silicone acrylic emulsion 5%

[0050] Superfine zinc powder 10%

[0051] The preparation method of above-mentioned waterborne inorganic zinc-rich paint comprises the steps:

[0052] (1) Take 1000g of lithium silicate solution with a percentage concentration of 4% and pour it into a container, add 750g of water to stir, and heat up to 70°C;

[0053] (2) Then add 100g of tetraethylammonium hydroxide catalyst, stir and reflux for 2h;

[0054] (3) Slowly add 1500 g of aluminum-modified silica sol with a molar content of 1% dropwise, and stir and reflux for 2 h;

[0055] (4) Then lower the system temperature to 40°C, and slow...

Embodiment 3

[0058] In the present embodiment, the high-performance water-based inorganic zinc-rich paint comprises the following components:

[0059] Lithium silicate solution 10%

[0060] water 15%

[0061] Aluminum modified silica sol 40%;

[0062] Tetraethylammonium hydroxide catalyst 3%

[0063] Lauryl Glycolamide 5%

[0064] Silane coupling agent 7%

[0065] Silicone acrylic emulsion 10%

[0066] Superfine zinc powder 10%

[0067] The preparation method of above-mentioned waterborne inorganic zinc-rich paint comprises the steps:

[0068] (1) Take 5000g of lithium silicate solution with a percentage concentration of 5% and pour it into a container, add 7500g of water to stir, and heat up to 60°C;

[0069] (2) Then add 1500g of tetraethylammonium hydroxide catalyst, stir and reflux for 3h;

[0070] (3) Slowly add 20,000 g of aluminum-modified silica sol with a molar content of 2% dropwise, and stir and reflux for 3 h;

[0071] (4) Then lower the system temperature to 30°C, and...

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Abstract

The invention relates to an aqueous high-modulus inorganic zinc-rich coating added with a catalyst and a preparation method thereof. The coating is prepared by mixing a lithium silicate solution, water, aluminum-modified silica sol, tetraethylammonium hydroxide, dodecyl glycol amide, a silane coupling agent, a silicone-acrylate emulsion and low-lead zinc powder. According to the aqueous high-modulus inorganic zinc-rich coating added with the catalyst, the tetraethylammonium hydroxide catalyst is added into the coating and is used for catalyzing reaction between the lithium silicate solution and the aluminum-modified silica sol, so that the uniformity of the colloid particles after reaction is improved.

Description

technical field [0001] The invention relates to a coating, in particular to a water-based inorganic zinc-rich coating and a preparation method thereof, belonging to the field of coating chemical industry. Background technique [0002] As the economy becomes more and more developed, steel is used more and more widely, but at the same time, steel is easy to corrode, which significantly reduces the mechanical properties of metal materials such as strength and toughness, resulting in damage to steel materials. According to statistics, the steel that is directly lost due to corrosion each year accounts for about a quarter of the annual output of steel. People use various methods to delay the corrosion rate of steel, such as improving the base material, increasing the metal coating, adding corrosion inhibitors, etc., although it has a certain delay effect on corrosion, but in a saline environment such as seawater or high temperature / high humidity environment In the process, som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D5/10C09D7/61C09D7/62C09D7/65C09D7/63
CPCC09D1/04C09D5/106
Inventor 林家天
Owner 林家天
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