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Multifunctional nano building exterior wall coating and preparation method thereof

A multi-functional technology for building exterior walls, applied in antifouling/underwater coatings, coatings, and biocide-containing paints, etc., which can solve problems such as surface cracks, increased external pollution, and artificial high-altitude operations. , to achieve the effects of excellent mechanical properties, enhanced compounding ability, and good anti-fouling performance

Active Publication Date: 2022-08-02
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial coatings, due to the long-term exposure of exterior wall coatings to complex external environments, the degree of external pollution of exterior wall coatings has increased, and there are many surface pollutants. When cleaning exterior walls, manual high-altitude operations are often required, which is not only inefficient , high cost, increased sewage pollution, and high safety risks
In addition, the exterior wall paint is exposed to the sun or rain all the year round, which leads to damage to the performance of the exterior wall paint, making the surface prone to cracks and other defects, resulting in a greatly reduced service life

Method used

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  • Multifunctional nano building exterior wall coating and preparation method thereof
  • Multifunctional nano building exterior wall coating and preparation method thereof
  • Multifunctional nano building exterior wall coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Preparation of MoS2 / Nanocellulose Composites

[0038] (1) Processing I

[0039]Preparation of nanocellulose fibers: take a certain amount of fiber log pulp suspension, add 6.0 mol / L NaBr solution, 0.01 mol / L TEMPO solution and 6.0 mol / L NaClO solution in turn to form a mixed solution, and use 0.2 mol / L NaOH solution to mix it. The pH value of the above mixed solution is adjusted to 10-10.5. Subsequently, the above mixed solution was mechanically stirred for 1 hour and sonicated for 30 minutes, then an appropriate amount of methanol was added to terminate the reaction, then 0.1 mol / L HCl solution was added to adjust the pH value to 7, filtered and washed 2 to 3 times, and redispersed to obtain nanometers. Cellulose fiber dispersion;

[0040] Preparation of molybdenum disulfide: using ammonium paramolybdate ((NH 4 ) 6 Mo 7 O 24 ·6H 2 O) is molybdenum source, thiourea (CS(NH) 2 ) 2 ) is a sulfur source, dissolve 0.3g of ammonium paramolybdate and 0.6g of thiour...

Embodiment 2

[0067] The coating formula for preparing this example is: 40 parts of water-based elastic emulsion, 20 parts of water-based fluorocarbon emulsion, 12 parts of molybdenum disulfide / nanocellulose composite, 12 parts of nano-titanium dioxide, 20 parts of nano-filler, 2 parts of dispersant, and 2 parts of moisturizing agent. 0.8 part of wetting agent, 2 parts of film-forming aid, 0.5 part of defoamer, 0.2 part of PH regulator, 0.4 part of thickener, 0.3 part of preservative, and 15 parts of water; among them, molybdenum disulfide / nanocellulose composite The molybdenum disulfide / nanocellulose composite of treatment I in Example 1 was used, and the nano-titania was coated with the hydrated alumina of treatment IV in Example 1 to coat the modified nano-titania.

[0068] The method for preparing the coating of the present embodiment is as follows: stir the molybdenum disulfide / nanocellulose composite and nano-titanium dioxide for 30 to 40 minutes to fully mix, then add water-based elas...

Embodiment 3

[0070] The coating formulation for preparing this example is: 30 parts of water-based elastic emulsion, 30 parts of water-based fluorocarbon emulsion, 12 parts of molybdenum disulfide / nanocellulose composite, 12 parts of nano-titanium dioxide, 20 parts of nano-filler, 2 parts of dispersant, moisturizing agent 0.8 part of wetting agent, 2 parts of film-forming aid, 0.5 part of defoamer, 0.2 part of PH regulator, 0.4 part of thickener, 0.3 part of preservative, and 15 parts of water; among them, molybdenum disulfide / nanocellulose composite The molybdenum disulfide / nanocellulose composite of treatment I in Example 1 was used, and the nano-titania was coated with the modified nano-titania using the hydrated alumina of treatment IV in Example 1.

[0071] The method for preparing the coating of the present embodiment is as follows: stir the molybdenum disulfide / nanocellulose composite and nano-titanium dioxide for 30 to 40 minutes to fully mix, then add water-based elastic emulsion, ...

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Abstract

The invention provides a multifunctional nano building exterior wall coating. The multifunctional nano building exterior wall coating is prepared from the following raw material components: 15 to 50 parts of water-based elastic emulsion, 10 to 30 parts of water-based fluorocarbon emulsion, 10 to 15 parts of molybdenum disulfide / nano cellulose compound, 10 to 15 parts of nano titanium dioxide, 15 to 30 parts of nano filler, 1 to 3 parts of dispersing agent, 0.1 to 2 parts of wetting agent, 1 to 5 parts of coalescing agent, 0.1 to 2 parts of defoaming agent, 0.1 to 1 part of pH regulator, 0.2 to 1 part of thickening agent, 0.3 to 0.7 part of preservative and 10 to 30 parts of water. The exterior wall coating provided by the invention has excellent weather resistance, stain resistance, antibacterial property, mechanical strength and the like, and is an exterior wall coating with relatively good comprehensive performance.

Description

technical field [0001] The invention belongs to the field of water-based coatings, in particular to a multifunctional nano-architecture exterior wall coating and a preparation method thereof. Background technique [0002] With the continuous improvement of people's awareness of environmental protection and the continuous upgrading of environmental protection policies and indicators, water-based coatings have attracted more and more attention and continued to develop. In industrial coatings, due to the long-term exposure of exterior wall coatings to complex external environments, the degree of external pollution to exterior wall coatings increases, and there are many surface pollutants. When cleaning exterior walls, manual high-altitude operations are often required, which is not only inefficient. , high cost, increased sewage pollution, and extremely high safety risks. In addition, the exterior wall coating is exposed to the sun or rain all the year round, resulting in dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D133/16C09D7/61C09D7/62C09D7/65C09D7/48C09D5/14
CPCC09D133/04C09D133/16C09D7/61C09D7/62C09D7/65C09D7/48C09D7/70C09D5/14C08K2003/3009C08K2201/011C08K2003/2241C08L2205/16C08L2201/08C08L33/16C08L1/02C08K7/00C08K3/30C08K3/22C08K9/10C08K3/04C08L33/04
Inventor 周伟建黄理荣张旭王鹏符传杰谢寅峰马翠平
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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