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Preparation method of nano-enhanced water-based anti-corrosion paint

A nano-enhanced, anti-corrosion coating technology, applied in anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of loss of nano-filler effect, high surface free energy, weakened coating barrier effect, etc., to improve storage stability performance and construction performance, improve the overall performance of the coating, and improve the effect of thixotropy

Inactive Publication Date: 2018-04-24
TAIZHOU BRANCH ZHEJIANG-CALIFORNIA INT NANOSYSTEMS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large specific surface area and high surface free energy of nano-fillers, nanoparticles are easy to agglomerate. Even if the nanoparticles are dispersed in the coating by means of ball milling and high-speed stirring, they will also agglomerate and lose the proper effect of nano-fillers.
In addition, although the addition of inorganic nano-fillers can enhance the mechanical properties of the coating, the bonding between the inorganic filler and the organic matrix is ​​weak, resulting in weakened barrier effects of the coating on oxygen, water, etc., and poor anti-corrosion stability.
In short, the current research and development of nano-enhanced anti-corrosion coatings still needs new breakthroughs.

Method used

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  • Preparation method of nano-enhanced water-based anti-corrosion paint
  • Preparation method of nano-enhanced water-based anti-corrosion paint

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A nano-reinforced water-based anti-corrosion coating, consisting of the following raw materials in weight percentage, water-based epoxy emulsion (solid content 45%) 55%, nano-reinforced filler slurry (maximum particle size≤2 μm, solid content 60%) 40%, Leveling agent 1%, defoamer 0.3%, dispersant 0.3%, wetting agent 0.3%, thickener 0.1%, water 3%.

[0026] The preparation process is as follows: 1) adding nanomaterials (SiO 2 Sol (50nm, solid content 50%)), inorganic filler (containing titanium dioxide (1250 mesh), iron oxide red (800 mesh), zinc phosphate (800 mesh), talcum powder (3000 mesh), the weight ratio is 4:4 :1:1) and water, SiO 2 The weight ratio of the sol to the inorganic filler is 1:30, the solid content of the slurry is 60%, and stir evenly; 2) Start the cooling circulating water system of the nano sand mill, keep the temperature of the circulating cooling water at 5°C, start the diaphragm pump, and put the The mixed slurry is injected into the inner cav...

Embodiment 2

[0030] A nano-reinforced water-based anti-corrosion coating, consisting of the following raw materials in weight percentage, 40% of water-based acrylic emulsion (55% solid content), 55% of nano-reinforced filler slurry (maximum particle size≤2μm, 40% solid content), flow Leveling agent 0.5%, defoamer 0.2%, wetting agent 0.3%, dispersant 0.3%, coalescence aid 0.1%, water 3.6%.

[0031] The preparation process is as follows: 1) adding nanomaterials (Al 2 o 3Sol (20nm, solid content 30%)), inorganic filler (containing titanium dioxide (1250 mesh), iron oxide red (1250 mesh), barium sulfate (2000 mesh), mica (3000 mesh), the weight ratio is 2:5: 2.5:0.5) and water, Al 2 o 3 The weight ratio of the sol to the inorganic filler is 1:10, the solid content of the slurry is 40%, and it is stirred evenly; 2) Start the cooling circulating water system of the nano sand mill, keep the temperature of the circulating cooling water at 20°C, start the diaphragm pump, and put the The mixed s...

Embodiment 3

[0034] A nano-reinforced water-based anti-corrosion coating, consisting of the following raw materials in weight percentage, 45% of water-based polyurethane emulsion (50% solid content), 50% of nano-reinforced filler slurry (maximum particle size≤2μm, 50% solid content), flow Leveling agent 1.2%, defoamer 0.3%, wetting agent 0.2%, dispersant 0.3%, water 3%.

[0035] The preparation process is as follows: 1) adding nanomaterials (TiO 2 Sol (30nm, solid content 40%)), inorganic filler (containing titanium dioxide (1250 mesh), iron oxide red (1250 mesh), barium sulfate (2000 mesh), calcium carbonate (1250 mesh), talc (3000 mesh), Mica (3000 mesh), weight ratio 2:4:2:1:0.5:0.5) and water, TiO 2 The weight ratio of the sol to the inorganic filler is 1:20, the solid content of the slurry is 50%, and the mixture is evenly stirred; 2) Start the cooling circulating water system of the nano sand mill, keep the temperature of the circulating cooling water at 15°C, start the diaphragm pu...

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Abstract

The invention relates to the field of metal corrosion protection, and aims to provide a preparation method of nano-enhanced water-based anti-corrosion paint. The preparation method comprises the following steps: (1) taking the following raw material components in percent by weight: 40-55% of water-based resin emulsion, 40-55% of nano-enhanced filler slurry, 1.4-2% of additives and 1-8.5% of water;(2) adding a nano material, conventional inorganic filler and water to a mixing barrel, and performing uniform stirring; (3) starting a nano sand mill to perform cyclic milling to obtain nano-enhanced filler slurry; and (4) adding the water-based resin emulsion, the nano-enhanced filler slurry, the additives and the water to a paint blending barrel, and performing stirring to obtain the nano-enhanced water-based anti-corrosion paint. In the invention, the nano material and the conventional inorganic filler form a nano-coated stable structural unit in advance, and then, the nano-coated stablestructural unit is added to the resin to prepare the paint, thereby avoiding the defects that the nano material is agglomerated, the nano enhancement effect is difficult to exert and the like when thenano material is separately added; and the formed nano-coated stable structural unit has good thixotropy and can improve storage stability and construction performance.

Description

technical field [0001] The invention relates to a preparation method of a nano-enhanced water-based anticorrosion coating, which belongs to the field of metal anticorrosion. Background technique [0002] Metal materials occupy an important position in the field of materials due to their excellent mechanical properties and process properties, but metal corrosion has also caused huge losses to human society, such as storage and transportation equipment made of metal materials, petrochemical equipment, steel workshops, ships, Construction machinery, etc., are damaged due to long-term chemical or electrochemical effects, causing a large amount of economic losses. Aiming at the problem of metal corrosion, a variety of technologies can be used to protect, slow down or prevent metal corrosion. The most effective and common method is to coat the metal surface with an anti-corrosion coating to isolate the corrosive medium from contacting the metal substrate and achieve anti-corrosion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/04C09D175/04C09D167/08C09D5/08C09D7/62
CPCC09D163/00C08K3/34C08K3/36C08K9/10C08K2003/2227C08K2003/2241C08K2003/2272C08K2003/265C08K2003/3045C08K2003/328C08K2201/011C08K2201/014C09D5/08C09D133/04C09D167/08C09D175/04
Inventor 汪海风吴春春盛建松方竹根杨辉
Owner TAIZHOU BRANCH ZHEJIANG-CALIFORNIA INT NANOSYSTEMS INST