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A kind of anticorrosion coating based on fluorosilicone modified acrylic resin and its preparation

An acrylic resin, fluorosilicon modification technology, applied in the polymer field, can solve the problems of uneven distribution of fluorosilicon groups, unstable performance of anti-corrosion coatings, etc., to achieve stable corrosion resistance, good corrosion resistance, and improved corrosion resistance. sexual effect

Inactive Publication Date: 2018-05-01
GUANGDONG ZHONGXING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an anti-corrosion coating based on fluorine-silicon modified acrylic resin, to at least solve the problem of poor performance of fluoro-silicon modified acrylic resin anti-corrosion coating in the prior art caused by uneven distribution of fluorine-silicon groups in polymers. stability problem

Method used

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  • A kind of anticorrosion coating based on fluorosilicone modified acrylic resin and its preparation
  • A kind of anticorrosion coating based on fluorosilicone modified acrylic resin and its preparation
  • A kind of anticorrosion coating based on fluorosilicone modified acrylic resin and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. The mass percentage of raw materials and dosage is

[0026]

[0027] 2. Preparation method

[0028] Step 1: Mix perfluoroalkyl ethyl alcohol and diphenylmethane diisocyanate at a molar ratio of 1:1.2, add dibutyltin dilaurate accounting for 2% of the total weight of the reaction solution, and react under anhydrous conditions for 5 hours. The reaction temperature is 60°C;

[0029] Step 2: Take the liquid after the reaction in step 1, add polydimethylsiloxane according to the molar ratio of perfluoroalkyl ethyl alcohol content in the liquid to polydimethylsiloxane as 1:1.2, and add polydimethylsiloxane under anhydrous conditions The reaction was carried out for 10 hours at a temperature of 60°C;

[0030] Step 3: Take the liquid after the reaction in step 2, add isobutyl acrylate according to the molar ratio of the perfluoroalkyl ethyl alcohol content in the liquid to isobutyl acrylate is 1:3, and add 2% of the total weight of the reaction liquid Dibutyltin laurat...

Embodiment 2

[0035] 1. The mass percentage of raw materials and dosage is

[0036]

[0037] 2. Preparation method

[0038] This example was prepared using exactly the same steps as Example 1.

[0039] The surface of the substrate was sanded with 120-grit sandpaper, degreased with acetone and dried. The paint is sprayed on the template by spraying process.

Embodiment 3

[0041] 1. The mass percentage of raw materials and dosage is

[0042]

[0043] 2. Preparation method

[0044] The preparation steps 1-4 of this example are prepared by the same steps as in Example 1. After the ingredients in step 5 are mixed evenly, they are ground by a sand mill to a fineness of less than 50 μm to obtain the anti-corrosion agent of fluorosilicon modified acrylic resin coating.

[0045] The surface of the substrate was sanded with 120-grit sandpaper, degreased with acetone and dried. The paint is sprayed on the template by spraying process.

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Abstract

The invention discloses an anticorrosive coating based on fluorine-silicon modified acrylic resin. The coating contains the following components in percentage by weight (100% in all): 30%-50% of fluorine-silicon modified acrylic resin, 10%-45% of flaky zinc powder, 10%-30% of flaky mica plates, 5%-10% of ferrophosphorus powder, 0.5%-2% of a polyurethane-polyether block copolymer and 10%-15% of butyl acetate, wherein the fluorine-silicon modified acrylic resin is prepared by polymerizing fluorine-silicon acrylate with acrylate in a molar ratio of 1 to (2-5) under the action of azo initiators, and the fluorine-silicon modified acrylate is prepared through reaction of perfluoroalkyl ethyl alcohol, aromatic diisocyanate, polydimethylsiloxane and acrylate in a molar ratio of 1 to 1 (1-1.2) to (1-1.2) to (2-5). By designing the novel fluorine-silicon modified acrylic resin, fluorine-silicon groups are uniformly distributed in macromolecules, and the fluorine-silicon modified acrylic resin anticorrosive coating has the effect of stable performance.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to an anticorrosion coating based on fluorosilicon modified acrylic resin. Background technique [0002] Anti-corrosion coatings, as the main means of industrial anti-corrosion, can effectively protect metal structures and concrete structures from corrosion. Therefore, anti-corrosion coatings have been widely used all over the world for many years. Fluorosilicone modified acrylic resin coating is an important industrial coating, which has many advantages compared with other synthetic polymer resins, such as excellent light resistance, weather resistance, radiation resistance and corrosion resistance. Therefore, it has a very wide range of applications in the fields of automobiles, airplanes, furniture, cans, and machinery manufacturing. [0003] The patent application number CN201010261313 discloses a fluorosilicone modified acrylic resin hydrophobic anti-corrosion coating, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D5/10C09D7/61
CPCC09D5/106C09D7/70C09D151/08C08L75/04C08K13/04C08K7/00C08K2003/0893C08K3/34
Inventor 张全章冉云奇陶宏杰
Owner GUANGDONG ZHONGXING TECH
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