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Antibacterial environment-friendly coating and preparation method thereof

An environmentally friendly coating, polyacrylic acid technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of poor antibacterial properties of coatings, loss or migration, etc. effect, the effect of reducing the adhesion of bacteria

Inactive Publication Date: 2020-12-01
田超群
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of antibacterial environment-friendly coating and preparation method thereof, to solve the prior art, antibacterial coating relies on antibacterial component to realize antibacterial effect in actual use process, along with the loss or migration of antibacterial component, cause Disadvantages of Poor Persistence of Antibacterial Performance of Coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of waterborne polyacrylic acid:

[0032] Take monomer methyl methacrylate (MMA) and monomer butyl acrylate (BA) at a molar ratio of 1:1.5, and then weigh methacrylic acid (AA) and hydroxypropyl acrylate (HPA). The amount of AA The amount of HPA is 2.5% of the total mass of all monomers, and the amount of HPA is 4.5% of the total mass of all monomers; then weigh 2% of the total mass of all monomers Initiator BPO, and 1 times the total mass of all monomers in absolute ethanol ; First, add 1 / 2 mass of monomer, 1 / 4 mass of initiator, and 1 / 2 mass of absolute ethanol into the reactor, and heat and stir at a temperature of 80°C and a stirring speed of 200r / min. After 20 minutes, add the remaining monomer and initiator dropwise, and control the dropping within 2 hours, then add the remaining absolute ethanol, continue the reaction for 3 hours, cool down, add triethylamine dropwise to neutralize the pH to neutral, and obtain water-based Polyacrylic acid;

[0033] Gr...

Embodiment 2

[0039] Synthesis of waterborne polyacrylic acid:

[0040] Take monomer methyl methacrylate (MMA) and monomer butyl acrylate (BA) at a molar ratio of 1:2, and then weigh methacrylic acid (AA) and hydroxypropyl acrylate (HPA). The amount of AA 3% of the total mass of all monomers, the amount of HPA is 4.8% of the total mass of all monomers; then weigh the initiator BPO of 3% of the total mass of all monomers, and dehydrated alcohol 1.5 times the total mass of all monomers ; First, add 1 / 2 mass of monomer, 1 / 4 mass of initiator, and 1 / 2 mass of absolute ethanol into the reactor, and heat and stir at a temperature of 82°C and a stirring speed of 300r / min. After 25 minutes, add the remaining monomer and initiator dropwise, and control the dropwise completion within 2.5 hours, then add the remaining absolute ethanol, continue the reaction for 4 hours, cool, add dropwise triethylamine to neutralize until the pH is neutral, and obtain Water-based polyacrylic acid;

[0041] Grafting ...

Embodiment 3

[0047] Synthesis of waterborne polyacrylic acid:

[0048] Take monomer methyl methacrylate (MMA) and monomer butyl acrylate (BA) at a molar ratio of 1:3, and then weigh methacrylic acid (AA) and hydroxypropyl acrylate (HPA). The amount of AA 5% of the total mass of all monomers, the amount of HPA is 5.0% of the total mass of all monomers; then weigh the initiator BPO of 4% of the total mass of all monomers, and absolute ethanol twice the total mass of all monomers ; First, add 1 / 2 mass of monomer, 1 / 4 mass of initiator, and 1 / 2 mass of absolute ethanol into the reactor, and heat and stir at a temperature of 85°C and a stirring speed of 400r / min. After 30 minutes, add the remaining monomer and initiator dropwise, and control the dropping within 3 hours, then add the remaining absolute ethanol, continue the reaction for 5 hours, cool down, add triethylamine dropwise to neutralize the pH to neutral, and obtain water-based Polyacrylic acid;

[0049] Grafting of amidine groups: ...

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PUM

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Abstract

The invention discloses an antibacterial environment-friendly coating and a preparation method thereof, belonging to the technical field of building materials. The product developed by the invention comprises water-based polyacrylic acid, wherein monomers in the polyacrylic acid comprise methacrylic acid (AA), the content of the AA is 2.5 to 5%, and amidine groups are grafted in the water-based polyacrylic acid. The antibacterial environment-friendly coating further comprises water-absorbent resin and an elastomer emulsion. A ratio of a hard monomer to a soft elastomer in the water-based polyacrylic acid is 1: 1.5 to 1: 3; the hard monomer is methyl methacrylate (MMA), and the soft monomer is butyl acrylate (BA); the elastomer emulsion is any one selected from a natural rubber emulsion, abutadiene styrene rubber emulsion, a butyl rubber emulsion and an organic silicon elastomer emulsion; and the solid content of the elastomer emulsion is 40-60%. When a product is to be prepared, synthesis of water-based acrylic resin is included, and amidine groups are further grafted to the water-based acrylic resin.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an antibacterial and environment-friendly paint and a preparation method thereof. Background technique [0002] As an important building material, coatings are of great significance to improve their functions. Microbes are widely distributed in the environment, and damage to various materials is ubiquitous. At the same time, various infectious diseases caused by the action of microorganisms have caused great harm to humans. After the coating is contaminated by microorganisms, once the growth conditions are suitable, the microorganisms will It grows and reproduces in a large amount in the paint, causing the paint system to show signs of instability, mainly manifested in the decrease of the viscosity of the paint system, the precipitation of the pigment, the generation of gas and the change of the pH value, etc. Once the coating formed after the coating is eroded by mic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D5/14C09D7/65C08F220/18C08F220/14C08F220/20C08F220/06C08F8/32C08F8/00
CPCC08F8/32C08L2205/03C09D5/14C09D133/14C09D7/65C08F220/1804C08F220/14C08F220/20C08F220/06C08F8/00C08L71/02C08L7/02C08L29/04C08L9/08C08L33/26C08L83/04
Inventor 田超群
Owner 田超群
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