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A kind of water-based peelable coating and preparation method thereof

A water-based coating technology, applied in antifouling/underwater coatings, conductive coatings, amylose/pullulan derivative coatings, etc., can solve the problems of resource waste, environmental pollution, etc., and achieve excellent oil stain resistance and high cost performance High film thickness and good peelability

Inactive Publication Date: 2022-01-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Solvent-based peelable coatings have excellent properties such as high strength, high elongation, and corrosion resistance, and are now mainstream products. However, their disadvantage is that a large amount of organic solvents used in the film formation process evaporates, which not only causes waste of resources, but also seriously pollutes the environment.

Method used

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  • A kind of water-based peelable coating and preparation method thereof
  • A kind of water-based peelable coating and preparation method thereof
  • A kind of water-based peelable coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method of water-based peelable coating, comprising the steps of:

[0049] (1) Mix polyvinyl alcohol, modified amylose, plasticizer, polyether modified silicone, sucrose ester, hydroxyl silicone oil, leveling agent, thixotropic agent, substrate wetting agent, preservative and water, Obtain mixed liquor; The relation of each raw material component that uses described in embodiment 1 is shown in following table 1;

[0050] (2) Under the stirring state that the rotating speed is 60 rev / min, the mixed solution described in step (1) is heated up and heat-treated, the temperature of the heat treatment is 95° C., and the time of the heat treatment is 2 hours, and then the temperature is lowered to At room temperature, the water-based peelable coating was obtained. The film performance indicators of the water-based peelable coating prepared in Example 1 after film formation are shown in Table 2 below.

[0051] Table 1

[0052]

[0053]

[0054] Table 2

...

Embodiment 2

[0057] A preparation method of water-based peelable coating, comprising the steps of:

[0058] (1) Mix polyvinyl alcohol, modified amylose, plasticizer, polyether modified silicone, sucrose ester, hydroxyl silicone oil, leveling agent, thixotropic agent, substrate wetting agent, preservative and water, Obtain mixed solution; The relation of each raw material component that uses described in embodiment 2 is shown in following table 3;

[0059] (2) Under the stirring state that the rotating speed is 120 rev / min, the mixed solution described in step (1) is heated up, and heat-treated, the temperature of the heat-treatment is 98° C., and the time of the heat-treatment is 4 hours, and then the temperature is lowered to At room temperature, the water-based peelable coating was obtained. The film performance indicators of the water-based peelable coating prepared in Example 2 after film formation are shown in Table 4 below.

[0060] table 3

[0061]

[0062]

[0063] Table 4...

Embodiment 3

[0066] A preparation method of water-based peelable coating, comprising the steps of:

[0067] (1) Mix polyvinyl alcohol, modified amylose, plasticizer, polyether modified silicone, sucrose ester, hydroxyl silicone oil, leveling agent, thixotropic agent, substrate wetting agent, preservative and water, Obtain mixed liquor; The relation of each raw material component that embodiment 3 uses is shown in following table 5.

[0068] (2) Under the stirring state that the rotating speed is 100 rev / min, the mixed liquid described in step (1) is heated up, and heat-treated, the temperature of heat-treatment is 96 ℃, the time of heat-treatment is 2.5 hours, then cools down to At room temperature, the water-based peelable coating was obtained. The film performance indicators of the water-based peelable coating prepared in Example 3 after film formation are shown in Table 6 below.

[0069] table 5

[0070]

[0071] Table 6

[0072]

[0073]

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Abstract

The invention discloses a water-based peelable paint and a preparation method thereof. The raw materials used in the preparation method include the following substances (in parts by weight): polyvinyl alcohol 100; modified amylose 10-20; plasticizer 15-35; polyether modified silicone 5-15; 1.0; hydroxyl silicone oil 0.2-0.5; leveling agent 0.5-2.0; thixotropic agent 1.0-3.0; substrate wetting agent 0.5-1.0; preservative 0.3-1.0; water 400-600. The preparation method comprises: adding each component into a heated container for stirring and mixing after metering, then raising the temperature to 95-98° C., stirring, dissolving and mixing for 2-4 hours; cooling to room temperature and packaging to form a water-soluble peelable coating. After the coating provided by the invention is formed into a film, it is resistant to heavy oil pollution and antistatic, and the formed coating has high strength and is easy to peel off.

Description

technical field [0001] The invention relates to the field of paint preparation, in particular to a water-based peelable paint and a preparation method thereof. Background technique [0002] As a temporary protective coating with low adhesion and strong cohesion, the strippable coating has the advantages of convenient coating, easy film formation, anti-corrosion and corrosion resistance, pollution release and anti-friction. Its development began during World War II. With the development of polymer chemical technology and the increasing market demand, it emerged in Japan, the United States and some European countries in the 1970s and produced large-scale production. with application. It is mainly used in the temporary protection of aerospace devices, weaponry, large machinery, automobiles, high-quality optical lenses, etc., and the removal of radioactive isotope pollution on nuclear industry equipment. [0003] From the perspective of the mechanism of action of the strippabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D129/04C09D5/20C09D7/65C09D103/18C09D7/20C09D5/24C09D5/16
CPCC09D129/04C09D5/20C09D7/20C09D5/24C09D5/1668C09D5/1687C08L2205/035C08L3/18C08L83/04C08L83/12
Inventor 崔跃飞
Owner SOUTH CHINA UNIV OF TECH
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