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Aqueous transparent strippable protective coating

A paint and transparent technology, applied in the direction of coating, etc., can solve problems such as flammable and explosive hazards, poor environmental protection, and unsuitable for the development trend of paint

Active Publication Date: 2012-05-23
AVIC BIAM NEW MATERIALS TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peelable coatings cured at room temperature are often developed with resin film-formers such as polyvinyl chloride, perchlorethylene, low molecular weight polystyrene, polyacrylic resin, nylon copolymer, silicone, and various rubbers. Solvent-based coatings are not environmentally friendly, flammable and explosive, and do not adapt to the future development trend of coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 35 parts by weight of a molecular weight of 20000, a glass transition temperature of 5 degrees of air-dried film-forming water-soluble styrene-acrylic copolymer; 63 parts by weight of a molecular weight of 25000, a glass transition temperature of 50 degrees of air-dried film-forming Type silicone acrylic copolymer; 0.4 parts by weight of defoamer modified silicone resin; 0.5 parts by weight of plasticizer ethyl phthalate; 0.3 parts by weight of peeling accelerator trimethyl phosphate; 0.1 parts by weight Thickener hydroxycellulose; 0.3 parts by weight of film-forming agent benzyl alcohol; 0.5 parts by weight of anti-aging agent phenyl salicylate; and 0.4 parts by weight of antifungal agent N-methylbenzamide fully mixed, Stir evenly at 800r / min, that is, the water-based transparent peelable protective coating is successfully prepared. For ease of coating, the viscosity can be adjusted with 0-200mL of water.

Embodiment 2

[0028] 40 parts by weight of an air-dried film-forming water-soluble pure acrylic copolymer with a molecular weight of 30,000 and a glass transition temperature of -10 degrees; Film-type pure propylene copolymer; 0.5 parts by weight of defoamer acrylic acid copolymer; 0.6 parts by weight of plasticizer triethylene glycol suberate; 0.35 parts by weight of peeling accelerator fluorosilicone low molecular resin; 0.05 parts by weight Thickener acrylic emulsion thickener of parts by weight; Film-forming agent methyl benzyl alcohol of 0.1 parts by weight; And the antifungal agent Benzimidazole methyl carbamate of 0.4 parts by weight is fully mixed, stirs evenly under 800r / min , that is, the successful preparation of water-based transparent peelable protective coatings. For ease of coating, the viscosity can be adjusted with 0-200mL of water.

Embodiment 3

[0030] 70 parts by weight of an air-drying film-forming water-soluble silicon-acrylic copolymer with a molecular weight of 25,000 and a glass transition temperature of -5 degrees; Film-type styrene-acrylic copolymer; 0.5 parts by weight of defoamer modified silicone resin; 0.4 parts by weight of plasticizer tartrate; 0.25 parts by weight of peeling accelerator fluorosilicone low-molecular resin; 0.1 parts by weight of thickening Acrylic emulsion thickener; 0.25 parts by weight of film-forming agent methyl benzyl alcohol; and 0.5 parts by weight of antifungal agent benzimidazole methyl carbamate are fully mixed, stirred evenly at 800r / min, that is successfully prepared Water-based clear peelable protective coating. For ease of coating, the viscosity can be adjusted with 0-200mL of water.

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PUM

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Abstract

The invention relates to an aqueous transparent strippable protective coating, which is solidified at normal temperature, takes water as a solvent and can be used for temporarily protecting a base material, and a preparation method thereof. The aqueous transparent strippable protective coating comprises the following components: 25 to 70 percent of flexible acrylic acid copolymerization emulsion,25 to 70 percent of hard acrylic acid copolymerization emulsion, 1.0 to 5.0 percent of plasticizer, 1.0 to 5.0 percent of stripping accelerant, 0.1 to 0.5 percent of thickening agent, 0.2 to 1.0 percent of anti-aging agent and 0.5 to 2.0 percent of film forming auxiliary agent. The preparation method comprises the following steps: fully mixing the flexible acrylic acid copolymerization emulsion, the hard acrylic acid copolymerization emulsion, the plasticizer, the stripping accelerant, the thickening agent, the anti-aging agent and the film forming auxiliary agent sequentially in the proportion; and then stirring the mixture uniformly at a speed of 800 r / min to prepare the aqueous transparent strippable protective coating.

Description

technical field [0001] The invention relates to a transparent strippable paint which is solidified at normal temperature and uses water as a solvent, which can be used for temporary protection of substrates and a preparation method thereof. Background technique [0002] Peelable coatings are usually used for temporary protection of cultural relics, precision parts, mechanical equipment and other items, and can also be used for dirt peelable layers of household appliances such as range hoods and exhaust umbrellas. Strippable protective coatings must meet the requirements for use in all weather conditions, that is, they must have excellent weather resistance. It must meet the basic technical requirements: long-term rain without swelling, no blistering (water resistance); peelability after light aging (light aging resistance); no adhesion to the paint film after long-term outdoor exposure in summer, Does not change color (high temperature resistance); freezes for a long time i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D125/14C09D5/20
Inventor 师华熊家锦王菁李运德徐永祥岳文华黄玖梅冯雍刘伟马震张亮胡立明马建旗杨红李春
Owner AVIC BIAM NEW MATERIALS TECH ENG