Composite nanometer waterproof and heat-insulating coating for buildings and preparation method thereof

A composite nanomaterial and thermal insulation coating technology, which is applied in the field of composite nano-hydrophobic thermal insulation coatings for buildings and their preparation, can solve the problems of single function and poor environmental protection, and achieves enhanced thermal insulation performance and good thermal insulation effect. , the effect of reducing the emission of odor

Active Publication Date: 2022-05-17
艾斯贝科环保科技(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of single function and poor environmental protection of coatings currently on the market, the invention provides a new type of waterproof and heat-insulating coating for buildings, which has good heat insulation effect, good waterproof performance, long service life, and is economical, safe and environmentally friendly. Broad market application potential

Method used

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  • Composite nanometer waterproof and heat-insulating coating for buildings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A composite nano-waterproof and heat-insulating coating for buildings, comprising the following raw materials in parts by weight: 150 parts of emulsion, 60 parts of water-based polyurethane, 60 parts of filler, 60 parts of heat-insulating composite nano-material, 30 parts of silicone hydrophobic agent, film-forming auxiliary 5 parts of agent, 3 parts of defoamer, 3 parts of synergist.

[0026] The emulsion used in this example is a polyacrylate emulsion with a solid content of 50%.

[0027] The heat-insulating composite nanomaterial is prepared by the following method: after mixing the nano-silica powder and the nano-titanium dioxide powder according to the mass ratio of 1:1, they are completely immersed in a nitric acid solution with a mass percentage of 50%. , soaked for 24 hours, then washed twice with deionized water, then soaked in a 50% methyltriethoxysilane solution for 6 hours, then placed in a muffle furnace for calcination at 450°C for 3 hours, cooled to At r...

Embodiment 2

[0040] A composite nano-waterproof and heat-insulating coating for buildings, comprising the following raw materials in parts by weight: 180 parts of emulsion, 70 parts of water-based polyurethane, 70 parts of filler, 70 parts of heat-insulating composite nano-material, 40 parts of silicone hydrophobic agent, film-forming auxiliary 8 parts of agent, 5 parts of defoamer, 4 parts of synergist.

[0041] The emulsion used in this example is a polyacrylate emulsion with a solid content of 55%.

[0042] The heat-insulating composite nanomaterial is prepared by the following method: after mixing the nano-silica powder and the nano-titanium dioxide powder according to the mass ratio of 1:1, they are completely immersed in a nitric acid solution with a mass percentage of 50%. , soaked for 24 hours, then washed 3 times with deionized water, then soaked in a 50% methyltriethoxysilane solution for 10 hours, then placed in a muffle furnace and calcined at 450 ° C for 4 hours, cooled to At...

Embodiment 3

[0055] A composite nano-waterproof and heat-insulating coating for buildings, comprising the following raw materials in parts by weight: 200 parts of emulsion, 80 parts of water-based polyurethane, 80 parts of filler, 80 parts of heat-insulating composite nano-material, 50 parts of silicone hydrophobic agent, film-forming auxiliary 10 parts of agent, 6 parts of defoamer, 6 parts of synergist.

[0056] The emulsion used in this example is a polyacrylate emulsion with a solid content of 60%.

[0057] The heat-insulating composite nanomaterial is prepared by the following method: after mixing the nano-silica powder and the nano-titanium dioxide powder according to the mass ratio of 1:1, they are completely immersed in a nitric acid solution with a mass percentage of 50%. , soaked for 24 hours, then washed 3 times with deionized water, then soaked in a 50% methyltriethoxysilane solution for 12 hours, and then placed in a muffle furnace for calcination at 450 ° C for 5 hours, coole...

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Abstract

The invention discloses a composite nanometer waterproof and heat-insulating coating for buildings and a preparation method thereof, belonging to the technical field of coatings. The coating of the present invention comprises the following raw materials in parts by weight: 150-200 parts of emulsion, 60-80 parts of water-based polyurethane, 60-80 parts of filler, 60-80 parts of heat-insulating composite nanomaterial, 30-50 parts of silicone hydrophobic agent, film-forming 5-10 parts of auxiliary agent, 3-6 parts of defoamer, 3-6 parts of synergist. The present invention adds a large amount of heat-insulating composite nanomaterials, and through two-step modification of acid etching and hydrophobicity, the hydrophobicity and heat-insulation performance of the material is greatly improved. At the same time, the synergist added has strong adhesion ability and can Adsorbed on the surface of nano-materials and filler particles, it can be stably dispersed in the coating, greatly reducing the peeling and cracking of subsequent coatings, and prolonging the service life of the coating. The coating of the invention has good heat insulation effect, good waterproof performance, long service life and broad market application potential.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a composite nano-hydrophobic heat-insulating coating for buildings and a preparation method thereof. Background technique [0002] Waterproof coating is one of the important components of building functional materials. In building construction, waterproof coatings mainly form a waterproof layer on the surface of buildings to achieve the purpose of waterproofing and anti-leakage. Therefore, the performance and selection of waterproof coatings are directly related to the use effect and service life of buildings. At present, the waterproof coatings on the market are mainly polyurethane waterproof coatings, acrylic waterproof coatings and other products. Among them, polyurethane waterproof coatings have excellent mechanical properties and good waterproof performance, but their weather resistance is not good, and they are prone to foaming in high-temperature and high-humidity enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D175/04C09D7/62C09D7/61C09D7/65
CPCC09D133/04C09D7/62C09D7/61C09D7/65C09D7/70C08K2201/011C08K2003/2241C08L2205/035C08L2205/025C08L75/04C08L77/04C08L5/08C08K13/06C08K9/02C08K9/06C08K3/36C08K3/22C08K3/34C08K7/26Y02P20/10
Inventor 李桂丽
Owner 艾斯贝科环保科技(北京)有限公司
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