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Two-component silicone-acrylic emulsion anti-mildew coating and preparation method thereof

A silicone acrylic emulsion, two-component technology, used in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problem of rising mold spores and film-forming substrates that may be brought into the air Insufficient density, high price and other problems, to achieve the effect of environmental adaptability, improved anti-mildew effect and long storage period

Active Publication Date: 2016-04-27
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] General antifungal coatings usually have the following defects: one is that the film-forming substrate is a nutrient for mold (such as oil, natural resin, etc.), and it can temporarily not become a nutrient for mold by adding an antifungal agent to it, but When the antifungal agent is lost or fails to decompose, mold may grow; second, the film-forming substrate is not dense enough, and has a certain antifungal effect under dry conditions, but in an environment with high humidity, due to the enlarged pores , the moisture content rises, which may bring mold spores into the air, making the mold contact the substrate and causing mildew
Most of the antifungal agents developed now are mainly non-toxic or less toxic substances, such as heterocyclic compounds, organotin compounds, organochlorine compounds, organocopper compounds, etc., but most of the antifungal coatings on the market currently exist Or narrow bactericidal spectrum, or short validity period, or poor coating, or high toxicity, or expensive, etc.

Method used

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  • Two-component silicone-acrylic emulsion anti-mildew coating and preparation method thereof
  • Two-component silicone-acrylic emulsion anti-mildew coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation and synthesis of silicone acrylic emulsion:

[0030] Weigh 56 g of methyl acrylate, 2 g of acrylic acid, 1 g of emulsifier fatty alcohol polyoxyethylene ether sodium sulfate and alkylphenol polyoxyethylene (10) ether OP-10, 1 g of sodium bicarbonate, 1 g of propylene glycol, and 50 g of water Gram; Emulsify uniformly at a high speed of 1500rpm at room temperature to prepare a component A emulsion;

[0031] Weigh 38 grams of n-butyl acrylate, 14 grams of vinyl triethoxysilane, 1 gram each of emulsifier fatty alcohol polyoxyethylene ether sodium sulfate AES and alkylphenol polyoxyethylene (10) ether OP-10, bicarbonate 1 gram of sodium, 1 gram of propylene glycol, and 50 grams of water were emulsified evenly at a high speed of 1500 rpm at room temperature to prepare a component B emulsion;

[0032] Weigh 40 grams of liquid A that has been emulsified uniformly, add 2 milliliters of potassium persulfate aqueous solution with a mass fraction of 20%, slowly rai...

Embodiment 2

[0036] 1) Preparation and synthesis of silicone acrylic emulsion:

[0037] Weigh 54g of methyl methacrylate, 4g of methacrylic acid, 1 gram of emulsifier fatty alcohol polyoxyethylene ether sodium sulfate and alkylphenol polyoxyethylene (10) ether OP-10, 1 gram of potassium bicarbonate, 1 gram of propylene glycol gram, 60 grams of water; emulsify evenly at a high speed at 1500rpm at room temperature to prepare a component A emulsion;

[0038] Take by weighing 42 grams of n-butyl methacrylate, 10 grams of vinyl triethoxysilane, 1 gram each of emulsifier fatty alcohol polyoxyethylene ether sodium sulfate AES and alkylphenol polyoxyethylene (10) ether OP-10, 1 gram of potassium bicarbonate, 1 gram of n-amyl alcohol, and 40 grams of water were uniformly emulsified at a high speed of 1500 rpm at room temperature to obtain a component B emulsion;

[0039]Weigh 40 grams of liquid A that has been emulsified uniformly, add 2 ml of potassium persulfate aqueous solution with a mass frac...

Embodiment 3

[0043] 1) Preparation and synthesis of silicone acrylic emulsion:

[0044] Take by weighing methyl acrylate 52g, acrylic acid 6g, emulsifier fatty alcohol polyoxyethylene ether sodium sulfate and alkylphenol polyoxyethylene (10) ether OP-10 each 1 gram, sodium bicarbonate 1 gram, ethylene glycol 1 gram, 40 grams of water; uniformly emulsified at a high speed of 1500 rpm at room temperature to obtain component A;

[0045] Take by weighing 40 grams of n-butyl methacrylate, 12 grams of vinyl triethoxysilane, 1 gram each of emulsifier fatty alcohol polyoxyethylene ether sodium sulfate AES and alkylphenol polyoxyethylene (10) ether OP-10, 1 gram of sodium bicarbonate, 1 gram of dibutyltin dilaurate, and 60 grams of water were emulsified at room temperature at a high speed of 1500 rpm to obtain component B;

[0046] Weigh 40 grams of liquid A that has been emulsified uniformly, add 3 ml of potassium persulfate aqueous solution with a mass fraction of 10%, slowly raise the temperatu...

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PUM

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Abstract

The invention discloses a double-component silicone acrylic emulsion mildew-resistant paint. The mildew-resistant paint comprises the following components in parts by weight: 95-98 parts of silicone acrylic emulsion, 1-2 parts of a mildew-resistant agent, 1-3 parts of a filler, 1-2 parts of a stabilizer and 0.5-1 parts of a pH value regulator. The invention further discloses a preparation method of the emulsion. The silicone acrylic emulsion is prepared by stepwise polymerizing component-A emulsion with component-B emulsion. The waterborne emulsion is good in coating performance, and the emulsion is dispersed and mixed with the proper mildew-resistant agent to obtain the environment-friendly and efficient mildew-resistant paint; the paint is capable of preventing the infection of various mildews in case of being coated on the surface of a bamboo plate.

Description

technical field [0001] The invention relates to an anti-mildew coating and a preparation method thereof, in particular to a two-component silicon-acrylic emulsion anti-mold coating for the surface of bamboo and wood materials and a preparation method thereof. Background technique [0002] The growth of mold generally requires the following three conditions: 1. Suitable humidity and temperature; 2. Nutrients that can cause mold; 3. Bacteria brought by flowing air. The anti-mold of materials generally starts from the above three aspects. As long as the material does not meet one of the above conditions during use, the effect of anti-mold can be achieved. [0003] General antifungal coatings usually have the following defects: one is that the film-forming substrate is a nutrient for mold (such as oil, natural resin, etc.), and it can temporarily not become a nutrient for mold by adding an antifungal agent to it, but When the antifungal agent is lost or fails to decompose, mold...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D133/12C09D5/14C08F220/14C08F230/08
Inventor 张融覃道春费本华张禄晟
Owner INT CENT FOR BAMBOO & RATTAN
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