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Environment-friendly high-weather-resistance silicone-acrylic coating composition and preparation method thereof

A composition and environmental protection technology, applied in the direction of coating, can solve the problems of water resistance, poor moisture permeability, high water permeability, poor low temperature toughness, etc., and achieve the effect of friendly construction, excellent adhesion and good weather resistance.

Inactive Publication Date: 2021-06-11
广东至诚紫光新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acrylate resin also has some disadvantages, such as being sensitive to temperature, easy to show "cold brittle hot viscosity", poor water resistance and moisture permeability, easy to lose gloss, poor low temperature toughness, and high water permeability

Method used

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  • Environment-friendly high-weather-resistance silicone-acrylic coating composition and preparation method thereof
  • Environment-friendly high-weather-resistance silicone-acrylic coating composition and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0033] The preparation method of the aqueous hydroxypropyl resin of embodiment 1-3 is as follows:

[0034] a. Add 0.5KgAA, 0.5Kg MA, 0.5Kg BA, 0.5Kg HEA, 0.5Kg MMA and 0.05Kg azobisisobutyronitrile to 2Kg environmentally friendly alcohol ether;

[0035] b. When the measured acid value is 60-90 and the hydroxyl value is 20-30, add DMEA to neutralize to a pH of 7-9, add water to dissolve to obtain the final product.

Embodiment 1

[0037] A kind of environment-friendly high-weather resistant silicon acrylic paint composition, comprises the component of following percentage by weight:

[0038] 20Kg of water-based hydroxypropyl resin;

[0039] 25Kg of modified hybrid silicone resin;

[0040] 0.03Kg of aluminum acetylacetonate;

[0041] 3Kg of ethanol;

[0042] 0.01Kg of film-forming aids;

[0043] 15Kg of weather-resistant water-based color paste, the balance is water.

[0044] The preparation method of modified hybrid silicone resin comprises the steps:

[0045] a. Mix and stir 3Kg of silica sol, 1Kg of ethyl disilicate, and 6Kg of MTES;

[0046] b. Adjust the pH to 4-5, and the temperature is 60 degrees Celsius to react for 4H;

[0047] c. adding ethanol to adjust the solid content to 30% of the total weight to obtain the final product.

Embodiment 2

[0049] A kind of environment-friendly high-weather resistant silicon acrylic paint composition, comprises the component of following percentage by weight:

[0050] 10Kg of water-based hydroxypropyl resin;

[0051] 15Kg of modified hybrid silicone resin;

[0052] 0.03Kg of aluminum acetylacetonate;

[0053] 3Kg of ethanol;

[0054] 0.01Kg of film-forming aids;

[0055] 10Kg of weather-resistant water-based color paste,

[0056] 0.1Kg of phosphoric acid;

[0057] 0.03Kg UV absorber;

[0058] 0.05Kg of potassium aluminum sulfate;

[0059] 0.1Kg water-based plasticizer.

[0060] The preparation method of modified hybrid silicone resin comprises the steps:

[0061] a. Mix and stir 5Kg of silica sol, 1Kg of ethyl disilicate, and 5Kg of MTES;

[0062] b. Adjust the pH to 4-5, and the temperature is 60 degrees Celsius to react for 4H;

[0063] c. adding ethanol to adjust the solid content to 30% of the total weight to obtain the final product.

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Abstract

The invention relates to the field of high polymer materials, in particular to an environment-friendly high-weather-resistance silicone-acrylic coating composition which comprises the following components in percentage by mass: 10-20% of water-based hydroxypropyl resin, 10-25% of a modified hybrid silicone resin, 0.01-0.1% of aluminum acetylacetonate, 1-3% of ethanol, 15-25% of a water-based color paste, and 1-3% of a coalescing agent. Compared with a traditional emulsion type silicone-acrylic coating, the composition has better adhesive force and weather resistance and is easier to construct.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an environment-friendly and highly weather-resistant silicon-acrylic paint composition and a production method thereof. Background technique [0002] Acrylic resin is a new type of paint developed in the 1950s. Acrylate coating film has the advantages of light color, good transparency, excellent weather resistance, color retention, mechanical stability, film-forming property, hardness, rich source of raw materials, relatively low cost, etc.; It does not change color at higher temperatures, and is resistant to corrosion and contamination by chemicals such as acids, alkalis, salts, greases, and detergents. Various properties of the coating can be changed by changing the type of comonomer, crosslinking agent and adjusting the molar mass of the polymer. But acrylate resin also has some disadvantages, such as being sensitive to temperature, easy to show "cold brittle hot viscosity",...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D133/02C09D133/08C09D133/14C09D133/12C09D7/61
CPCC08L2201/08C09D133/14C09D183/04C09D7/61C08L33/14C08K3/36C08L83/04
Inventor 李志民
Owner 广东至诚紫光新材料有限公司