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Underwater concrete flexible epoxy anticorrosion paint and preparation method thereof

A technology of epoxy anti-corrosion coating and underwater concrete, which is applied in the direction of anti-corrosion coating, epoxy resin coating, polyurea/polyurethane coating, etc. It can solve the problems of inability to construct at room temperature, high brittleness of anti-corrosion coating, high flexibility of coating, etc. Problems, achieve strong adhesion, good corrosion resistance, and improve toughness

Inactive Publication Date: 2018-10-19
青岛太平洋水下科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems that the existing underwater concrete anti-corrosion coatings are brittle, have low impact resistance and cannot be applied at normal temperature, the present invention proposes a coating that can be directly coated on corroded concrete in water and cured. The coating has high flexibility, impact resistance, and good adhesion to underwater concrete. Tough epoxy anti-corrosion coating

Method used

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  • Underwater concrete flexible epoxy anticorrosion paint and preparation method thereof
  • Underwater concrete flexible epoxy anticorrosion paint and preparation method thereof
  • Underwater concrete flexible epoxy anticorrosion paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare underwater tough epoxy anti-corrosion coatings according to the following weight percentages:

[0023]

[0024]

[0025] Preparation of paint:

[0026] (1) Preparation of component A: 22.40% epoxy resin E-51, 7.61% epoxy resin E-44, 14.90% flexible polyurethane epoxy resin 102C-4L, 3.26% propylene oxide benzyl ether, 4.68% Add trimethylolpropane glycidyl ether into the stirring tank in turn, heat to a certain temperature, stir evenly, then add 0.98% organic bentonite, 1.63% polyamide wax and stir, after stirring evenly, add 0.76% γ-glycidyl Propyltrimethoxysilane, 6.74% talc powder, 6.96% sericite powder, 5.17% precipitated barium sulfate, 6.53% wollastonite powder, 1.85% titanium dioxide, high-speed stirring dispersion, plus 0.54% dispersant Deqian 904S and 0.51 % defoamer Deqian 6500 continue to stir and disperse, add 0.11% carbon black for color adjustment after uniformity, and finally grind and pack.

[0027] (2) Preparation of component B: one-compo...

Embodiment 2

[0036] Prepare underwater tough epoxy anti-corrosion coatings according to the following weight percentages:

[0037]

[0038] Preparation of paint:

[0039] (1) Preparation of component A: 24.00% epoxy resin E-51, 8.14% epoxy resin E-44, 15.32% flexible polyurethane epoxy resin 102C-4L, 2.79% propylene oxide benzyl ether, 4.93% Add trimethylolpropane glycidyl ether into the stirring tank in turn, heat to a certain temperature, and stir evenly, then add 1.29% organic bentonite, 1.07% polyamide wax and stir, after stirring evenly, add 5.57% talcum powder, 7.27% Sericite powder, 4.5% precipitated barium sulfate, 6.96% wollastonite powder, 1.93% titanium dioxide, 0.74% γ-glycidyl propyl trimethoxysilane for high-speed stirring and dispersion, plus 0.51% dispersant Deqian 904S and 0.56% The defoamer Deqian 6500 continues to stir and disperse, and then add 0.12% carbon black for coloring, and finally grind and pack.

[0040] (2) Preparation of component B: component B is a sin...

Embodiment 3

[0049] Prepare underwater tough epoxy anti-corrosion coatings according to the following weight percentages:

[0050]

[0051]

[0052] Preparation of paint

[0053] (1) Preparation of component A: 21.55% epoxy resin E-51, 9.11% epoxy resin E-44, 15.89% flexible polyurethane epoxy resin 102C-4L, 2.67% propylene oxide benzyl ether, 4.44% Add trimethylolpropane glycidyl ether into the stirring tank in turn, heat to a certain temperature, and stir evenly, then add 1.22% organic bentonite, 1.00% polyamide wax and stir, after stirring evenly, add 5.44% talcum powder, 6.44% Sericite powder, 6.67% precipitated barium sulfate, 5.33% wollastonite powder, 1.78% titanium dioxide, 0.67% γ-glycidyl propyl trimethoxysilane for high-speed stirring and dispersion, plus 0.56% dispersant Deqian 904S and 0.46% The defoamer Deqian 6500 continues to stir and disperse, and then add 0.10% carbon black for coloring, and finally grind and pack.

[0054] (2) Preparation of component B: componen...

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Abstract

The invention provides an underwater concrete flexible epoxy anticorrosion paint and a preparation method thereof. The paint comprises a component (A) and a component (B). The component (A) comprisesepoxy resin E-51, epoxy resin E-44, flexible polyurethane epoxy resin 102C-4L, epoxy propane benzyl ether, trimethylolpropane glycidyl ether, organic bentonite, polyamide wax, and wollastonite powder.The component (B) is a special H-2303 underwater curing agent. Through the synergistic effect of multiple components, the prepared anticorrosion paint is easy for underwater construction, after underwater painting and curing, the bonding force between the coating and the concrete is strong, and the coating is resistant to corrosion. Modified flexible polyurethane resin is adopted, an active diluent, which can enhance the flexibility of cured substances, is added, and thus the flexibility of cured coating is good. The problems that common epoxy resin is brittle after curing and the impact resistant performance of common epoxy resin is bad are solved. The provided paint is suitable for the anticorrosion protection of concrete structures such as underwater bridge piers, concrete dam faces, splash zones, and the like.

Description

technical field [0001] The invention belongs to the field of underwater coatings, in particular to a tough epoxy anticorrosion coating for underwater concrete and a preparation method thereof. Background technique [0002] The underwater concrete structure in the water or seawater environment is subject to long-term erosion by water flow or even sandy water flow, chloride ion erosion in seawater, and carbonation of the concrete itself, resulting in honeycomb, pitting, cracks, exposed ribs and even holes on the concrete surface. These defects will cause great harm to the structure of concrete. At present, the methods to deal with these defects mainly include lowering the water level or building cofferdams to create a dry environment and then using conventional materials for construction; in addition, there are also some underwater construction coatings on the market, which can directly repair and paint defective concrete in water, which is convenient for construction , has p...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D5/08C09D7/61C09D7/63
CPCC08K2003/2241C08K2003/3045C08K2201/014C08L2205/025C08L2205/035C09D5/08C09D7/61C09D7/63C09D7/70C09D163/00C08L63/00C08L75/04C08K7/10C08K3/34C08K3/30C08K3/22C08K5/5435
Inventor 王国鹏单宇翥陈洋张勇陈吉素
Owner 青岛太平洋水下科技工程有限公司
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