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Fluorine-containing heavy-duty anticorrosive coating and its application

A heavy-duty anti-corrosion and coating technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as low fluorine content, inability to meet corrosion resistance, and difficulty in meeting the on-site coating requirements of large objects, and achieve the effect of excellent weather resistance

Inactive Publication Date: 2012-10-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of coating product has two fatal flaws of relatively complex on-site curing process and weak adhesion between the coating and the substrate surface, making it difficult to meet the on-site coating requirements of large objects
Fluorocarbon coatings on the market that can be used for on-site coating of large objects such as building exterior walls have a relatively low fluorine content. Corrosion resistance
To sum up, currently in the domestic market, there are basically no high-corrosion-resistant coating products suitable for harsh or extreme chemical environments. However, the demand for such special coating products in various domestic industries is still very large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Add 400 grams of epoxy vinyl resin, 50 grams of hexafluorobutyl methacrylate, 20 grams of methyl methacrylate, and 2 grams of azobisisobutyronitrile in a 1000 milliliter round bottom flask, mechanically stirring uniform. (Substrate treatment: Cut the tinplate sheet into small pieces with a length of 60mm and a width of 100mm, and polish the surface with sandpaper. Clean and dry the wood and glass surfaces, the same below). Apply the stirred slurry on the substrate, then place the coated substrate at 90 degrees Celsius for 1 hour, cool to room temperature, and place it in 60% sulfuric acid, 40% nitric acid, 52% sodium hydroxide solution Among them, the test results show that the chemical corrosion resistance of the coating is very good (basically no change after soaking for 6 days under these conditions), and the salt spray test also shows that the anti-corrosion effect of the coating is obvious.

Embodiment 2

[0018] Embodiment 2: Add 400 grams of epoxy vinyl resin, 100 grams of hexafluorobutyl methacrylate, 20 grams of methyl methacrylate, and 2 grams of azobisisobutyronitrile in a 1000 milliliter round bottom flask, mechanically stirring uniform. Apply the stirred slurry on the substrate, then place the coated substrate at 100 degrees Celsius for 1 hour and then cool it to room temperature. The test results of concentrated sulfuric acid, concentrated nitric acid and 40% sodium hydroxide show that the coating is resistant to chemical corrosion. The corrosion resistance is very good (basically no change after soaking for 6 days under these conditions), and the salt spray test also shows that the anti-corrosion effect of the coating is obvious.

Embodiment 3

[0019] Embodiment 3: Add 400 grams of epoxy vinyl resin, 200 grams of hexafluorobutyl methacrylate, 20 grams of methyl methacrylate, and 2 grams of azobisisobutyronitrile in a 1000 milliliter round bottom flask, mechanically stirring uniform. Apply the stirred slurry on the substrate, then place the coated substrate at 100 degrees Celsius for 2 hours and then cool it to room temperature. The test results of concentrated sulfuric acid, concentrated nitric acid and 40% sodium hydroxide show that the coating is resistant to chemical corrosion. The corrosion resistance is very good (basically no change after soaking for 6 days under these conditions), and the salt spray test also shows that the anti-corrosion effect of the coating is obvious.

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PUM

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Abstract

The invention relates to a fluorine-containing heavy-duty anticorrosive coating and its application. The coating comprises an epoxy vinyl resin, hexafluorobutyl methacrylate, methacrylate, a diluent and an initiator, wherein the mass ratio of the epoxy vinyl resin to the hexafluorobutyl methacrylate to the methacrylate is 4:0.5-6:0-0.4; the mass of styrene accounts for 20-65% of the mass of the epoxy vinyl resin; and the amount of he initiator accounts for 0.1-1% of the total mass of the coating. The fluorine-containing heavy-duty anticorrosive coating of the invention combines the excellent adhesion of epoxy resin coats and good chemical anticorrosive characteristics of fluorocarbon coats, coat products of the coating have already have the chemical anticorrosive capability under extreme environments through continuous technical innovation and improvement, and simultaneously the coating products have excellent weatherability same as that of the fluorocarbon coats, excellent adhesion same as that the epoxy resin coats, and a use temperature which is near 100DEG C higher than that of the epoxy resin coats and the fluorocarbon coats averagely.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion paint and its application, in particular to a fluorine-containing heavy-duty anti-corrosion paint and its application. Background technique [0002] With the continuous development of economy and society, the demand for corrosion-resistant coatings in all walks of life is also growing rapidly. At present, chemical corrosion-resistant coating products are sold in the international market, but due to some interests, such coating products are rarely exported to the Chinese mainland market, and the coated products exported to the domestic market are basically used for processing by some joint ventures For related products, such as corrosion-resistant coatings used on the surface of chemical experiment tabletops, it is difficult to find coating raw materials that can be used for surface processing of products. [0003] At present, the so-called "heavy-duty anti-corrosion coatings" sold in the domestic ma...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D5/08C08F283/10C08F220/22C08F220/14C08F220/18C08F212/14
Inventor 郝健王静
Owner SHANGHAI UNIV
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