High-strength anti-corrosion coating as well as preparation method and application thereof

A technology for anti-corrosion coatings and anti-corrosion coatings, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of anti-corrosion coatings such as poor knock resistance, shortened anti-corrosion time, and poor durability, and achieve low production costs , excellent anti-corrosion, and the effect of improving scratch resistance

Active Publication Date: 2017-09-08
嘉兴浩然科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the most commonly used anti-corrosion material on the market is anti-corrosion coating. Although the existing anti-corrosion coating has a certain anti-corrosion effect, a common problem is that the anti-corrosion coating has poor knock resistance, poor adhesion, and is easy to rub off, making the anti-corrosion coating Shorter time, poor durability

Method used

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  • High-strength anti-corrosion coating as well as preparation method and application thereof
  • High-strength anti-corrosion coating as well as preparation method and application thereof
  • High-strength anti-corrosion coating as well as preparation method and application thereof

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preparation example Construction

[0048] In some embodiments, the preparation method includes: adding the enhancer, synergist, and solvent into the reactor at a mass ratio of 1:0.025-2.5:20-50 and reacting at 20-100°C for 1-10 hours , after the reaction product is cooled, filter the product under reduced pressure and dry it at room temperature for 10-30 hours, then grind and sieve to finally obtain the enhancer with active groups on the surface.

[0049] In some embodiments, the synergist includes a silane coupling agent and / or a polymer compound. Since the reinforcing agent has undergone surface modification treatment, it has -OH, -NH 3 Such active functional groups enhance the binding force between the coating and the substrate, thereby greatly improving the strength of the coating and the scratch resistance of the coating compared with the prior art.

[0050] Preferably, the silane coupling agent includes 3-aminopropyltrimethoxysilane, γ-(2,3-glycidoxy)propyltriethoxysilane, γ-methacryloxypropyl Any one o...

Embodiment 1

[0069] (1) Add 7.5g nano-tungsten carbide, 18.75g 3-aminopropyltrimethoxysilane and 375g ethanol into the reaction kettle and react at 100°C for 10h. After the reaction product is cooled, filter the product under reduced pressure and store it at room temperature Dry for 30 hours, then grind and sieve, and finally obtain a surface with a large amount of -NH 3 nano tungsten carbide.

[0070] (2) Weigh 10 g of polyurethane resin, 5 g of nano zinc powder and 100 g of xylene in a 250 mL beaker, and stir for 40 min with a 1600 rpm magnetic stirrer.

[0071] (3) Add 7.5g surface with a large amount of -NH to the dispersion liquid that step (2) makes 3 Nano tungsten carbide, 6g isophorone, 9g sodium lauryl sulfate, 4.5g lauryl alcohol ester, and then stirred with a magnetic stirrer at 2000rpm for 20min to obtain a stable dispersion, that is, to obtain the high-strength anti-corrosion coating.

[0072] (4) Take the cleaned workpiece, and use brushing, spraying or dipping to make the ...

Embodiment 2

[0075] (1) Add 2g of black gemstone, 0.5g of polyacrylic acid and 90g of deionized water into the reactor and react at 60°C for 2h. After the reaction product is cooled, filter the product under reduced pressure and dry it at room temperature for 14h, then grind and sieve Points, and finally obtain a black gemstone with a large amount of -COOH on the surface;

[0076] (2) Weigh 10g polyacrylic resin, 10g nano-zinc powder, 50g n-butanol and 50g xylene in a 250mL beaker respectively, and stir for 45min with a magnetic stirrer at 1500rpm;

[0077] (3) Add 2g of black gemstone with a large amount of -COOH on the surface, 0.3g of octyltriethoxysilane, 0.20g of polyacrylamide, 0.15g of ethylene glycol monopropylene to the dispersion liquid prepared in step (2). ether, and then stirred with a 2000rpm magnetic stirrer for 20 minutes to obtain a stable dispersion, that is, to obtain the high-strength anti-corrosion coating.

[0078] (4) Take the cleaned workpiece and use brushing, spr...

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Abstract

The invention discloses a high-strength anti-corrosion coating as well as a preparation method and application thereof. The high-strength anti-corrosion coating contains an anti-corrosion processing agent, a reinforcing agent, a difunctional dispersing agent, a flatting agent, a film forming agent and a solvent, wherein the surface of the reinforcing agent is provided with active groups, and the mass ratio of the anti-corrosion processing agent to the reinforcing agent to the difunctional dispersing agent to the flatting agent to the film forming agent is 1 to (0.005-0.5) to (0.002-0.6) to (0.002-0.4) to (0.002-0.3), and the mass ratio of the solvent to the anti-corrosion processing agent is 100 to (0.01-50). The reinforcing agent is subjected to surface modification and is provided with active functional groups such as -OH and -NH3, so that the bonding force of a coating layer and a base material is enhanced, and the strength and scraping resistance of the coating layer can be substantially enhanced; the brush-coated, sprayed or dipped base material has excellent corrosion resistance, knock resistance and durability and high hardness and adhesive force; and a process of the preparation method is mature, the production cost is low, and the production process is environmentally friendly and pollution-free, so that the preparation method is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a high-strength anti-corrosion coating and a preparation method thereof, as well as the formed coating and its application, belonging to the technical field of protective materials. Background technique [0002] Anti-corrosion is to use special anti-corrosion materials on the surface of the metal substrate to protect the substrate from external factors such as sewage, oil, atmospheric oxidation, acid, alkali, salt and other chemical corrosion. [0003] According to the statistics of relevant departments, the metal loss due to corrosion is as high as hundreds of millions of yuan every year, and the corrosion of metal materials will also affect its own performance and subsequent processing. [0004] At present, the most commonly used anti-corrosion material in the market is anti-corrosion coating. Although the existing anti-corrosion coating has a certain anti-corrosion effect, a common...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/10C09D175/04C09D133/00C09D161/06C09D7/12
CPCC08K3/14C08K3/28C08K9/06C08K9/08C08K13/06C08K2003/0893C08K2003/385C08K2201/011C08K2201/014C08L2205/02C09D5/106C09D133/00C09D161/06C09D175/04C08L33/26C08L23/06C08K13/02C08L77/00C08K9/04C08K3/38
Inventor 张丹黄婵娟郑磊郑君红
Owner 嘉兴浩然科技有限责任公司
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