Preparation method of high-strength water-based strippable composite coating

A composite coating, high-strength technology, applied in the direction of coating, etc., can solve the problems of insufficient strength and fracture of the coating film, achieve good construction performance, improve flexibility and impact resistance, and improve efficiency

Inactive Publication Date: 2021-04-09
成都亢倡菱涂料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the coating film formed by the current water-based peelable paint is not strong enough and will break when subjected to external force impact, a preparation method of high-strength water-based peelable composite paint is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In parts by weight, weigh 20 parts of silicon powder, 20 parts of sodium hydroxide solution with a mass fraction of 10%, and 80 parts of deionized water, add silicon powder to deionized water, place it in an ultrasonic disperser, and Ultrasonic dispersion with a power of 400W for 20 minutes to obtain a silicon powder dispersion, put the silicon powder dispersion in a water bath at 70°C and stir at a speed of 200r / min for 10 minutes to obtain a silicon powder activation solution, add sodium hydroxide solution to the silicon powder for activation solution, stirred at a speed of 600~800r / min for 8 hours in a water bath at 70°C, and cooled at room temperature to obtain alkaline silica sol;

[0029] Then weigh 60 parts of alkaline silica sol, 3 parts of vinyltriethoxysilane, and 30 parts of absolute ethanol in parts by weight, and add vinyltriethoxysilane to absolute ethanol. Stir at 240r / min for 20min in a water bath to obtain vinyltriethoxysilane ethanol solution, slowly add...

Embodiment 2

[0032] In parts by weight, weigh 25 parts of silicon powder, 25 parts of sodium hydroxide solution with a mass fraction of 10%, and 100 parts of deionized water, add silicon powder to deionized water, place it in an ultrasonic disperser, and Ultrasonic dispersion with a power of 450W for 25 minutes to obtain a silicon powder dispersion, put the silicon powder dispersion in a water bath at 80°C and stir at a speed of 225r / min for 15 minutes to obtain a silicon powder activation solution, add sodium hydroxide solution to the silicon powder for activation solution, stirred at 700r / min for 10h in a water bath at 80°C, and cooled at room temperature to obtain alkaline silica sol;

[0033] Then weigh 70 parts of alkaline silica sol, 3.5 parts of vinyltriethoxysilane, and 35 parts of absolute ethanol in parts by weight, and add vinyltriethoxysilane to absolute ethanol at 45 ° C. Stir at 260r / min for 25min in a water bath to obtain vinyltriethoxysilane ethanol solution, slowly add vin...

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PUM

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Abstract

The invention relates to a preparation method of a high-strength water-based strippable composite coating, and belongs to the technical field of strippable coatings. The composite coating is prepared by taking the styrene-acrylic emulsion as a base material and adding the modified silica sol, wherein the acrylate soft monomer in the styrene-acrylic emulsion can endow a coating film with good flexibility and durability, and the styrene hard monomer can endow the coating film with good hardness and structural strength; in addition, the functional monomer can form a stably dispersed composite emulsion in the coating and increase the crosslinking density of a coating film; so that the compactness is improved, silica sol and styrene-acrylic emulsion are compounded, silica sol particles are dehydrated during coating film forming, a Si-O bond crosslinked reticular coating film is formed, and SiO bonds can effectively improve the flexibility and impact resistance of the coating film.

Description

technical field [0001] The invention relates to a preparation method of a high-strength water-based strippable composite coating, which belongs to the technical field of strippable coatings. Background technique [0002] During the process of transportation, storage, processing and assembly, materials, instruments and parts and other equipment are easily scratched, worn, polluted, and also easily corroded by salt spray, moisture, acid rain, microorganisms, etc., resulting in chemical corrosion and electrical damage. Chemical corrosion affects the appearance and morphology of equipment, and even degrades its performance. In order to reduce these damages and prolong the service life of the equipment, it is necessary to effectively seal and protect the equipment. For raw materials and semi-finished products, follow-up processing or assembly processes are required, and the surface is required to be kept clean, so it cannot be protected by spraying anti-rust paint. Using a peel...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D101/28C09D129/04C09D7/62C09D5/20
CPCC08L2205/035C09D5/20C09D125/14C09D7/62C08L1/284C08L29/04C08K13/06C08K9/06C08K3/36
Inventor 雷小毛
Owner 成都亢倡菱涂料科技有限公司
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