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Bio-based water-based coating as well as preparation method and application thereof

A water-based coating, bio-based technology, applied in the field of coatings, can solve the problems of inapplicable long-term antibacterial, easy to produce superbugs, and drug resistance, etc., achieve strong photooxidative catalytic antibacterial activity, improve photocatalytic oxidation activity, and enhance antibacterial performance effect

Active Publication Date: 2020-08-28
ASIA PAINT SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial agent that is applied in the architectural coating in the prior art comprises natural organic antibacterial agent and synthetic organic antibacterial agent, and wherein, the heat resistance of natural organic antibacterial agent is poor, has selectivity to virus bacteria, and life-span is short; Synthetic organic antibacterial agent has certain Toxicity; and long-term use of organic antibacterial agents will produce drug resistance, prone to super bacteria, not suitable for long-term antibacterial in architectural coatings

Method used

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  • Bio-based water-based coating as well as preparation method and application thereof
  • Bio-based water-based coating as well as preparation method and application thereof
  • Bio-based water-based coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0092] A bio-based water-based paint, the component formula of which is shown in Table 1, and the unit of each component in the formula is "parts by weight".

[0093] Table 1

[0094]

[0095]

[0096] In Table 1, the bio-based resin emulsion is DSM plant-based emulsion SP-8408 / 8409 with a C14 content of 30%; the dispersant is a mixture of Dow 1124 and 731A in a mass ratio of 3:2; the wetting agent is Clariant LFH ; pH adjuster is Solvay AN130; antifreeze is Solvay anti-freeze-thaw stabilizer FT100; sterilization and antifungal agent is MBS5050; It is a mixture of UH-450VF and ASE-60 in a mass ratio of 4:1; the water retention agent is cellulose ether; the titanium dioxide is rutile, DuPont R103.

[0097] The preparation method of the antibacterial and antiviral composite filler comprises the following steps:

[0098] (1) Mix 300g of kaolin (800 mesh), 100g of talc (800 mesh), 50g of sulfuric acid, 1.0g of sodium hexametaphosphate, 1.0g of polyacrylamide (average molec...

Embodiment 8

[0109] A bio-based water-based paint, the only difference from Example 1 is that the loading of nano-titanium dioxide in the antibacterial and anti-viral composite filler is 22%, the loading of nano-silver is 15%, and the loading of silicon oxide is 15%, The alumina loading was 6%.

[0110] The preparation method of the antibacterial and antiviral composite filler is as follows:

[0111] (1) 400g of kaolin, 50g of sulfuric acid, 1.0g of sodium hexametaphosphate, 1.0g of polyacrylamide and 1L of water were mixed and dispersed to obtain dispersion I; 32g of titanium tetrachloride, 4.5g of polyvinyl alcohol and 100mL of water were mixed uniform to obtain titanium tetrachloride hydrolyzate;

[0112] (2) the titanium tetrachloride hydrolysis that step (1) obtains is added dropwise in dispersion liquid I, reacts 5h, obtains the sample of loaded nano-silica;

[0113](3) mixing the sample obtained in step (2), 38 mL of silver nitrate solution with a concentration of 10% and 4.0 g of...

Embodiment 9

[0116] A bio-based water-based paint, the only difference from Example 1 is that the loading of nano-titanium dioxide in the antibacterial and anti-viral composite filler is 38%, the loading of nano-silver is 30%, and the loading of silicon oxide is 5%, The alumina loading was 14%.

[0117] The preparation method of the antibacterial and antiviral composite filler is as follows:

[0118] (1) 400g talc (800 meshes), 50g sulfuric acid, 1.0g sodium hexametaphosphate, 1.0g polyacrylamide (average molecular weight 8 million) and 1L water were mixed and uniformly dispersed to obtain dispersion liquid I; Titanium chloride, 6.8 g of polyvinyl alcohol and 100 mL of water are mixed uniformly to obtain a titanium tetrachloride hydrolyzate;

[0119] (2) the titanium tetrachloride hydrolysis that step (1) obtains is added dropwise in dispersion liquid I, reacts 5h, obtains the sample of loaded nano-silica;

[0120] (3) mixing the sample obtained in step (2), 50 mL of silver nitrate solut...

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Abstract

The invention provides bio-based water-based coating and a preparation method and application thereof. The bio-based water-based coating comprises a bio-based resin emulsion and an antibacterial and antiviral composite filler, wherein the antibacterial and antiviral composite filler comprises an inorganic nonmetallic mineral carrier, nano titanium dioxide and nano silver, wherein the nano titaniumdioxide and the nano silver are loaded on the inorganic nonmetallic mineral carrier. The bio-based water-based coating takes the bio-based resin emulsion as a film-forming substance, has the characteristics of greenness, renewability and degradability, and can fully meet the environmental protection requirements of coating; meanwhile, the antibacterial and antiviral composite filler is an inorganic antibacterial filler which has a photocatalytic oxidation antibacterial property and is synergistic by multiple components, so that the coating film is endowed with efficient, broad-spectrum and lasting antibacterial and antiviral properties. The bio-based water-based coating satisfies the requirements of environmental protection, antibiosis and antivirus, has favorable water resistance, alkaliresistance and stain resistance after film formation, and is especially suitable to be used as building coating in building exterior wall or indoor coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a bio-based water-based coating and a preparation method and application thereof. Background technique [0002] With the rapid development of the construction industry and real estate industry, the proportion of architectural coatings in coatings is also increasing. At the same time, people continue to put forward new requirements for the product performance of architectural coatings, which accelerates the product optimization and update of architectural coatings. At present, architectural coatings can be divided into two categories: solvent-based and water-based according to the dispersion medium. Water-based architectural coatings are systems with water as the dispersion medium. With the characteristics of low VOC, non-toxic and non-polluting, it is more in line with the current environmental protection regulations and the requirements of people's environmental pro...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D175/04C09D5/14C09D5/16
CPCC09D133/04C09D175/04C09D5/14C09D5/1662C09D5/1668C09D5/1687C08L2205/03C08K2003/2241C08K2201/011C08K2003/0806C08K2201/005C08K2003/2227C08L33/26C08L29/04C08K13/06C08K9/12C08K3/22C08K3/08C08K3/36
Inventor 李勇裴道海徐志新李金钟
Owner ASIA PAINT SHANGHAI
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