Method for preparing anti-wear, anti-corrosion nano composite epoxy asphalt repair paint

A technology of epoxy asphalt and nano-composite, which is applied in the direction of epoxy resin coating, anti-corrosion coating, coating, etc., can solve the problems of coating resistance drop, poor adhesion between coating and substrate, loss of substrate protection, etc., to reduce defects Formation, improvement of comprehensive performance, and simple process

Inactive Publication Date: 2006-08-23
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the classical coating corrosion failure mechanism, there are usually three forms of coating corrosion failure in corrosive media: one is that the adhesion between the coating and the substrate is poor, and it falls off; the other is that the coating itself is exposed to acid, alkali, salt and other media. Third, there are defects in the coating (such as pinholes) or poor impermeability of the coating, such as Na+, Cl- plasma can diffuse through, so that the resistance of the coating is greatly reduced and localized corrosion
At home and abroad, there is still a lack of relevant reports on the use of nanocomposite powder technology to improve the seawater corrosion resistance and scratch resistance of traditional epoxy asphalt repair coatings. This invention attempts to fill this gap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take titanium oxide with an average particle size of 30nm, and use an organic surface treatment agent sodium laurate to coat it. The dosage is 1% of the weight of nano-powder titanium oxide. First, take a small amount of epoxy resin and add a certain amount of treated titanium oxide particles. and disperse in a sand mill to obtain a slurry; after fully mixing the slurry with the original epoxy asphalt repair coating body, a nano-composite epoxy asphalt repair coating is obtained, and the addition of titanium oxide is 2% of the coating weight. The paint was uniformly rolled on the hot-dip galvanized steel plate, and after drying at room temperature, the coating film sample A was obtained. Reserved for performance evaluation tests.

Embodiment 2

[0017] Take titanium oxide with an average particle size of 30nm, and use organic surface treatment agent sodium laurate to coat it. The dosage is 3% of the weight of nano-powder titanium oxide. First, take a small amount of epoxy resin and add a certain amount of treated titanium oxide particles. and disperse in a sand mill to obtain a slurry; after fully mixing the slurry with the original epoxy asphalt repair paint body, a nano-composite epoxy asphalt repair paint is obtained, and the addition of titanium oxide is 3% of the weight of the paint. The paint was uniformly rolled on the hot-dip galvanized steel plate, and after drying at room temperature, the coating film sample B was obtained. Reserved for performance evaluation tests.

Embodiment 3

[0019] Take titanium oxide with an average particle size of 20nm, and use organic surface treatment agent sodium laurate to coat it. The dosage is 3% of the weight of nano-powder titanium oxide. First, take a small amount of epoxy resin and add a certain amount of treated titanium oxide particles. and disperse in a sand mill to obtain a slurry; after fully mixing the slurry with the original epoxy asphalt repair coating body, a nano-composite epoxy asphalt repair coating is obtained, and the addition of titanium oxide is 4% of the coating weight. The paint was uniformly rolled on the hot-dip galvanized steel plate, and after drying at room temperature, the coating film sample C was obtained. Reserved for performance evaluation tests.

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Abstract

The present invention discloses the preparation process of antiwear, anticorrosive nanometer composite epoxy asphalt repair paint. The repair paint has organic surfactant coated nanometer level functional powder in 2-15 wt% added, and the nanometer level functional powder is one or two selected from titania, silica, zinc oxide, nickel oxide, alumina, chromium oxide, manganese oxide and barium sulfate. The nanometer level powder is first dispersed in small amount of epoxy resin through ball milling, sand grinding or high speed emulsification to form slurry, and the slurry is then mixed with the main epoxy asphalt repair paint component to obtain the antiwear, anticorrosive nanometer composite epoxy asphalt repair paint. The composite epoxy asphalt repair paint is used in repairing coated film and has high anticorrosive performance and high scratch resistance.

Description

technical field [0001] The invention relates to a preparation method of an epoxy resin-based coating composition, and more specifically relates to a preparation method of an epoxy asphalt repair coating added with nano functional powder. Background technique [0002] The ocean is a very corrosive environment. Almost all parts of marine engineering facilities and marine ships need anti-corrosion protection. Therefore, the scope of marine anti-corrosion coatings is very wide, and they all belong to the category of heavy-duty anti-corrosion coatings, such as anti-rust Primer, hull paint, deck paint, interior cabin paint, container paint, seaport facilities and platform paint, oil tank paint, seawater cooling pipeline and offshore oil pipeline paint, etc. Zinc-rich coatings are currently one of the hot spots in marine engineering protective coatings. The earliest zinc-rich paint was invented by Australian Victov Nightingale in the 1930s, an inorganic zinc-rich paint prepared by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
Inventor 钟庆东施利毅方建慧张剑平张文涛孙建
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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