Water-based silica sol gel inorganic zinc-rich primer and preparation method thereof

Abstract

The invention relates to the field of coatings, and provides a water-based silica sol gel inorganic zinc-rich primer and a preparation method thereof, the product is composed of a water-based silica sol gel solution, a filler, an auxiliary agent and deionized water; and zinc powder is used as another reaction component. In addition, an organosilane polymer is also added, the water-based silica solgel solution and the organosilane polymer are added into deionized water during preparation, the auxiliary agent and the filler are added, a mixture is uniformly dispersed through high-speed shearing, and a base material component is obtained through blending; during construction, the base material component and the zinc powder component are blended in proportion and stirred uniformly, and cleanwater is used for adjusting the construction viscosity for coating. The problems that in the prior art, solvent type inorganic zinc-rich primer is high in VOC, large in coating porosity, thick in coating cracking and poor in adhesion, and the strong alkali characteristic of traditional water-based alkali metal silicate inorganic zinc-rich paint has adverse effects on the environment and steel aresolved. The water-based silica sol gel inorganic zinc-rich primer is used for carbon steel anticorrosion protection in severe environments, and is also used for static electricity conduction protection in chemical storage tanks.

Description

technical field

[0001] The invention relates to a coating paint, in particular to a steel anticorrosion protective paint which can be used in harsh and harsh marine environments and an anticorrosion protective paint which can be used for the inner wall of a solvent storage tank, and a preparation method and a construction method thereof. Background technique

[0002] Steel is one of the most important industrial materials. Among the many measures to prevent and delay the corrosion of steel, the most economical and effective is to use coatings for anti-corrosion protection. For offshore and coastal bridges, ships, storage tanks, drilling platforms, pipe racks, oil pipelines, tanks and other large steel structures and steel equipment, coatings are almost the only effective protective measures available. As an important variety of steel anti-corrosion coatings, zinc-rich coatings use the active energy of zinc powder to form electrochemical cathodic protection to effectively pro...

Examples

Embodiment 1

[0045] The components of water-based silica sol gel inorganic zinc-rich paint are:

[0046] Component A

[0047] Aqueous silica sol gel: 36.7g (14.7%)

[0048] Deionized water: 24.2g (9.7%)

[0049] Auxiliary 3.1g (1.2%) - specifically composed of 0.1g bactericide, 0.2g defoamer, 0.5g dispersant, 2.2g anti-settling thixotropic agent: 0.1g wetting and leveling agent;

[0050] Zinc oxide: 1.5g (0.6%)

[0051] Zinc chloride: 3.0g (1.2%)

[0052] Silica powder: 28.5g (12.6%)

[0053] Component B:

[0054] 500 mesh spherical active zinc powder: 150g

[0055] Put 36.7g of water-based silica sol gel liquid and 1.8g of organosilane polymer into 24.2g of deionized water, add 0.1g of bactericide, 0.2g of defoamer, 0.5g of dispersant, 2.2g of anti-sedimentation thixotropic agent, 0.1g Wetting and leveling agent, after uniform mixing, put in 1.5g of zinc oxide, 1.5g of zinc chloride, 30.0g of silicon micropowder, disperse evenly through high-speed shearing, and prepare a paint to o...

Embodiment 2

[0058] The components of water-based silica sol gel inorganic zinc-rich paint are:

[0059] Component A

[0060] Aqueous silica sol gel: 34.7g (15.2%)

[0061] Deionized water: 18.3g (8.0%)

[0062] Auxiliary 4.1g (1.8%) - specifically composed of 0.1g bactericide, 0.2g defoamer, 1.5g dispersant, 2.2g anti-settling thixotropic agent: 0.1g wetting and leveling agent;

[0063] Zinc oxide: 3.5g (1.5%)

[0064] Zinc chloride: 2.3g (1.0%)

[0065] Feldspar powder: 5.8g (2.5%)

[0066] Component B:

[0067] 500 mesh spherical active zinc powder: 160g

[0068] Put 34.7g of aqueous silica sol gel liquid and 2.0g of organosilane polymer into 18.3g of deionized water, add 0.1g of bactericide, 0.2g of defoamer, 1.5g of dispersant, 2.2g of anti-sedimentation thixotropic agent, 0.1g Wetting and leveling agent, after mixing evenly, put in 3.5g zinc oxide, 2.3g zinc oxide, 5.8g feldspar powder, disperse evenly through high-speed shearing, blend into paint, and obtain component A;

[...

technical field

[0001] The invention relates to a coating paint, in particular to a steel anticorrosion protective paint which can be used in harsh and harsh marine environments and an anticorrosion protective paint which can be used for the inner wall of a solvent storage tank, and a preparation method and a construction method thereof. Background technique

[0002] Steel is one of the most important industrial materials. Among the many measures to prevent and delay the corrosion of steel, the most economical and effective is to use coatings for anti-corrosion protection. For offshore and coastal bridges, ships, storage tanks, drilling platforms, pipe racks, oil pipelines, tanks and other large steel structures and steel equipment, coatings are almost the only effective protective measures available. As an important variety of steel anti-corrosion coatings, zinc-rich coatings use the active energy of zinc powder to form electrochemical cathodic protection to effectively pro...

Examples

Embodiment 1

[0045] The components of water-based silica sol gel inorganic zinc-rich paint are:

[0046] Component A

[0047] Aqueous silica sol gel: 36.7g (14.7%)

[0048] Deionized water: 24.2g (9.7%)

[0049] Auxiliary 3.1g (1.2%) - specifically composed of 0.1g bactericide, 0.2g defoamer, 0.5g dispersant, 2.2g anti-settling thixotropic agent: 0.1g wetting and leveling agent;

[0050] Zinc oxide: 1.5g (0.6%)

[0051] Zinc chloride: 3.0g (1.2%)

[0052] Silica powder: 28.5g (12.6%)

[0053] Component B:

[0054] 500 mesh spherical active zinc powder: 150g

[0055] Put 36.7g of water-based silica sol gel liquid and 1.8g of organosilane polymer into 24.2g of deionized water, add 0.1g of bactericide, 0.2g of defoamer, 0.5g of dispersant, 2.2g of anti-sedimentation thixotropic agent, 0.1g Wetting and leveling agent, after uniform mixing, put in 1.5g of zinc oxide, 1.5g of zinc chloride, 30.0g of silicon micropowder, disperse evenly through high-speed shearing, and prepare a paint to o...

Embodiment 2

[0058] The components of water-based silica sol gel inorganic zinc-rich paint are:

[0059] Component A

[0060] Aqueous silica sol gel: 34.7g (15.2%)

[0061] Deionized water: 18.3g (8.0%)

[0062] Auxiliary 4.1g (1.8%) - specifically composed of 0.1g bactericide, 0.2g defoamer, 1.5g dispersant, 2.2g anti-settling thixotropic agent: 0.1g wetting and leveling agent;

[0063] Zinc oxide: 3.5g (1.5%)

[0064] Zinc chloride: 2.3g (1.0%)

[0065] Feldspar powder: 5.8g (2.5%)

[0066] Component B:

[0067] 500 mesh spherical active zinc powder: 160g

[0068] Put 34.7g of aqueous silica sol gel liquid and 2.0g of organosilane polymer into 18.3g of deionized water, add 0.1g of bactericide, 0.2g of defoamer, 1.5g of dispersant, 2.2g of anti-sedimentation thixotropic agent, 0.1g Wetting and leveling agent, after mixing evenly, put in 3.5g zinc oxide, 2.3g zinc oxide, 5.8g feldspar powder, disperse evenly through high-speed shearing, blend into paint, and obtain component A;

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