A construction method of an exterior wall waterproofing and decoration integrated coating

Abstract

This invention relates to the field of building exterior wall construction technology, specifically to a method for constructing an integrated waterproof and decorative coating for exterior walls. First, the building exterior wall substrate undergoes comprehensive cleaning and meticulous leveling. The entire process employs an environmentally friendly construction method combining dry vacuuming and wet dust removal to prevent dust pollution. Manual labor, combined with a dust-free grinder, removes loose mortar, dust, oil stains, aged peeling coatings, and other debris from the exterior wall surface. For wall cracks and holes, inorganic environmentally friendly repair mortar is used for filling and leveling. This repair mortar is formaldehyde-free, heavy metal-free, and biodegradable, meeting national green building material standards. It boasts excellent environmental performance, achieving green and waste-free construction. This invention uses low-VOC, formaldehyde-free, and heavy metal-free pure water-based environmentally friendly materials throughout the process. All raw materials meet the ten-ring certification standards for green building materials, minimizing waste liquid and solid waste pollution. A closed-loop construction model is implemented, encompassing dust recovery, filtration and reuse of waste coating liquid, water resource recycling, and the recycling and reuse of scrap materials.

Description

Technical Field

[0001] This invention relates to the field of building exterior wall construction technology, specifically to a method for applying an integrated waterproof and decorative coating for exterior walls. Background Technology

[0002] With the comprehensive implementation of green and low-carbon building policies in my country, the environmental friendliness, energy efficiency, and integrated design of building exterior wall construction have become core trends in the industry. Traditional exterior wall construction processes generally employ a multi-layered construction model, involving multiple steps such as base leveling, putty application, primer sealing, waterproofing layer application, topcoat decoration, and protective coating. This approach suffers from numerous quality defects, including cumbersome procedures, long construction cycles, high labor costs, low interlayer bonding strength, and susceptibility to cracking and water seepage. Furthermore, the coatings used in traditional exterior wall construction are mostly solvent-based, containing large amounts of volatile organic compounds (VOCs), formaldehyde, and other harmful substances. The construction process generates significant amounts of solid waste, including dust, waste paint, and waste putty, resulting in severe environmental pollution and failing to meet green construction standards.

[0003] In terms of energy efficiency, traditional exterior wall coatings only provide basic decoration or waterproofing, lacking thermal insulation properties. This results in high heat transfer efficiency on building exteriors, leading to rapid indoor heating in summer and significant heat loss in winter, substantially increasing the energy consumption of building air conditioning and heating equipment, and resulting in low building energy efficiency compliance rates. Furthermore, the traditional layered construction process suffers from poor compatibility of coating materials, making them prone to problems such as interlayer peeling, flaking, fading, and water seepage under prolonged exposure to sun and rain. This leads to frequent maintenance and renovation, increasing construction costs and generating substantial construction waste, resulting in resource waste and secondary pollution.

[0004] Existing integrated exterior wall coating construction technologies mostly focus on combining waterproofing and decorative performance, but have significant shortcomings in environmentally friendly construction, energy conservation and consumption reduction, and zero-waste construction. They generally suffer from low environmental protection levels of coatings, poor thermal insulation effects, high construction energy consumption, and low solid waste recycling rates, and cannot meet the current standards for green building energy-saving construction and ultra-low emissions.

[0005] Therefore, developing a simplified, environmentally friendly, energy-saving, and stable integrated coating construction method for exterior wall waterproofing and decoration is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated construction method for exterior wall waterproofing and decoration coatings. This method solves the problems of high pollution, high energy consumption, cumbersome procedures, single performance, and poor durability in traditional exterior wall construction. It achieves integrated construction of exterior wall waterproofing, decoration, energy-saving insulation, and environmentally friendly construction, significantly reducing construction pollution and building operation energy consumption, and improving the overall quality and service life of exterior wall coatings.

[0007] Technical solution

[0008] To achieve the above objectives, the present invention provides a method for applying an integrated waterproof and decorative coating for exterior walls, comprising the following steps:

[0009] S1, Basic environmental pretreatment;

[0010] S2. Application of moisture-proof and sealing primer for the base layer;

[0011] S3, Energy-saving and environmentally friendly integrated waterproof and decorative coating formulation;

[0012] S4, Integrated coating layer spraying construction;

[0013] S5, Low-temperature energy-saving curing and maintenance;

[0014] S6. Zero-waste final acceptance.

[0015] The specific construction process for each step is as follows:

[0016] S1, Basic Environmental Pretreatment

[0017] First, the base layer of the building's exterior walls is thoroughly cleaned and meticulously leveled. The entire process employs an environmentally friendly construction method that combines dry vacuuming with wet dust removal to prevent dust spread and pollution.

[0018] Manual labor combined with a dust-free grinder removes loose mortar, dust, oil stains, aged and peeling coatings, and other debris from the exterior wall surface. For wall cracks and holes, inorganic environmentally friendly repair mortar is used for filling and leveling. The repair mortar is formaldehyde-free, heavy metal-free, and biodegradable, meeting national green building material standards.

[0019] The dust generated during grinding is collected in real time by a matching dust collection device, filtered and recycled centrally, and can be used for backfilling and leveling of the wall base, achieving zero dust emission and solid waste reuse.

[0020] After the base layer treatment is completed, the moisture content of the wall is tested and controlled to be ≤10% and pH value 7-9 to avoid the coating from blistering and peeling due to dampness and excessive alkalinity of the wall.

[0021] For renovation of old exterior walls, there is no need to completely remove the original base layer. Only the damaged and aging parts are cleaned, while the intact base layer is preserved, which greatly reduces the generation of construction waste, saves raw material resources, and reduces construction energy consumption.

[0022] S2, Application of base layer moisture-proof sealing primer

[0023] The water-based environmentally friendly sealing primer is applied evenly by spraying. The sealing primer is a low-VOC pure water-based formula with a VOC content of ≤20g / L. It is free of benzene, formaldehyde, and heavy metals, and its environmental protection level meets the ten-ring certification standard.

[0024] The primer is made from modified water-based acrylic emulsion, deionized water, inorganic wetting and dispersing agents, and environmentally friendly defoamers. No organic solvents are added, and no harmful gases are released during construction and use.

[0025] During construction, a high-pressure airless spraying process is adopted, with the spraying pressure controlled at 0.3-0.5MPa. One coat is sprayed evenly, and the thickness is controlled at 0.1-0.2mm. This ensures that the primer completely penetrates and seals the capillary pores of the wall, preventing the seepage of water vapor from inside the wall, while also enhancing the adhesion strength between the substrate and the subsequent integrated coating.

[0026] The ambient temperature for primer application should be controlled between 5-35℃. It should be air-dried naturally without the need for heating and curing, thus saving energy during application. The surface drying time is 30-60 minutes, and the complete drying time is 2-3 hours.

[0027] S3, Energy-saving and environmentally friendly integrated waterproof and decorative coating formulation

[0028] The core of this invention is a water-based, energy-saving, waterproof, and decorative integrated coating. The coating is a two-component, environmentally friendly formula, including component A (functional base material) and component B (environmentally friendly additives). It is solvent-free, low-odor, recyclable, and possesses multiple properties including waterproofing, decoration, thermal insulation, weather resistance, and anti-aging. The specific raw material ratio (parts by weight) is as follows:

[0029] Component A: 45-55 parts modified waterborne silicone-acrylic emulsion, 8-12 parts aerogel nano-insulating filler, 5-8 parts nano-silica waterproof powder, 15-20 parts inorganic mineral pigments and fillers, and 10-15 parts deionized water.

[0030] Component B: 1-2 parts of environmentally friendly dispersant, 0.5-1 part of water-based leveling agent, 0.3-0.8 parts of inorganic defoamer, and 0.2-0.5 parts of pH adjuster.

[0031] Coating preparation steps: First, add deionized water, environmentally friendly dispersant, and inorganic defoamer to a low-speed mixing tank and stir at 300-400 r / min for 3-5 minutes until evenly mixed;

[0032] Then, slowly add modified waterborne silicone-acrylic emulsion, aerogel nano-insulating filler, and nano-silica waterproof powder, and increase the rotation speed to 800-1000 r / min for high-speed dispersion for 15-20 min to ensure that the filler is completely dispersed without agglomeration;

[0033] Finally, add inorganic mineral pigments and fillers, water-based leveling agents, and pH adjusters. Stir at low speed for 5-8 minutes to adjust the pH value of the coating to 7.5-8.5. Filter the coating to obtain a uniform and stable integrated functional coating.

[0034] The coating formula contains no organic solvents and has a total VOC content of ≤15g / L, which is far below the national environmental protection standard for exterior wall coatings. The aerogel nanofiller has an ultra-low thermal conductivity, which can significantly improve the thermal insulation performance of the coating and reduce the building's heat and cold energy consumption.

[0035] Nano-silica powder is used to construct a dense hydrophobic film layer, achieving highly efficient waterproofing and seepage prevention;

[0036] Inorganic mineral pigments and fillers have strong weather resistance, no pigment precipitation, are green and non-toxic, and do not pollute the environment with long-term use.

[0037] S4, Integrated Coating Layered Spraying Application

[0038] After the sealing primer has completely dried, the integrated coating is applied in two layers using a two-coat spraying process. This eliminates the need for additional steps such as putty, waterproof intermediate layer, and topcoat, simplifying the construction process and reducing material and energy consumption.

[0039] The entire process adopts a high-pressure, airless, low-temperature spraying process. The spraying equipment emits no waste gas or residue, and the construction noise is low, which meets the standards for green construction sites.

[0040] First coat: Apply the prepared integrated coating evenly to the primer surface, with a coating thickness of 0.3-0.4mm. The spraying sequence follows the principle of top to bottom, left to right, and cross-spraying horizontally and vertically to ensure uniform coverage of the coating without any missed spots, runs, or pinholes. Allow the coating to air dry naturally for 40-60 minutes until it is surface dry.

[0041] Second coat: After the first coat is surface dry, a second coat is applied, with the thickness controlled at 0.4-0.5mm, and the total coating thickness controlled at 0.7-0.9mm.

[0042] Two layers of spraying can form a dense composite functional coating. The bottom layer focuses on penetration and bonding, waterproofing and seepage prevention, while the top layer focuses on decoration, protection, and thermal insulation, achieving functional layer integration and taking into account both construction quality and finishing effect.

[0043] This step abandons the traditional multi-layer construction mode, integrating multiple functions in a single molding process. Compared with traditional processes, it reduces construction steps by more than 40%, significantly shortens the construction cycle, reduces labor and equipment energy consumption, and reduces resource consumption caused by the superposition of multiple materials, resulting in a reduction of solid waste generation by more than 90%.

[0044] S5, Low-temperature energy-saving curing and maintenance

[0045] After the spraying application is completed, a room temperature natural low-temperature curing process is adopted, eliminating the need for baking, heating or other high-temperature curing equipment, thus completely eliminating the power consumption and exhaust emissions of high-temperature curing and achieving energy-saving curing.

[0046] The curing environment temperature should be controlled between 5-38℃, the relative humidity between 40%-70%, and natural ventilation should be used for curing. Avoid direct sunlight, heavy rain, and strong winds.

[0047] The surface drying time of the coating is 1-2 hours, the actual drying time is 12-18 hours, and the complete curing period is 72 hours.

[0048] The curing process requires no human intervention or energy-consuming equipment, relying on the natural environment to complete film formation and curing. Compared with traditional high-temperature curing processes, energy consumption is reduced by more than 85%.

[0049] After curing, the coating forms a dense, hydrophobic, and thermally insulating structure with a thermal conductivity of ≤0.035W / (m·K), a waterproof and seepage-resistant pressure of ≥0.6MPa, and an artificial aging resistance of ≥2000h. It possesses excellent energy-saving, waterproof, and weather-resistant properties.

[0050] S6. Zero-waste final acceptance

[0051] After construction is completed, a zero-waste finishing process is carried out. The remaining paint concentrate and the paint waste liquid from cleaning and filtration are collected, filtered, and remixed for reuse, with no waste paint discharged.

[0052] Wastewater from the cleaning of spraying and mixing equipment used in construction is recycled for wet dust removal of the base layer after sedimentation and filtration, thus realizing the recycling of water resources.

[0053] The small amount of scraps and filter residue generated during construction are collected and reused as wall insulation backfill material, achieving 100% recycling and reuse of construction solid waste and eliminating the discharge of construction waste.

[0054] After completion, quality acceptance is carried out in accordance with green building construction standards, with a focus on testing coating thickness, bonding strength, waterproof and seepage-proof performance, thermal insulation performance and environmental protection indicators. This ensures that the coating is free from defects such as cracking, peeling, fading and water seepage, and that environmental protection indicators such as VOC and heavy metals fully comply with national standards, and that energy-saving and thermal insulation performance meets the building energy-saving design requirements.

[0055] Furthermore, the inorganic environmentally friendly repair mortar described in S1 is a cement-based inorganic composite mortar that does not contain organic adhesives, formaldehyde, or benzene compounds. It has a compressive strength ≥15MPa, a bonding strength ≥0.6MPa, is biodegradable, and causes no environmental pollution after disposal.

[0056] Furthermore, the aerogel nano-insulating filler in S3 has a particle size of 20-50nm, a thermal conductivity of ≤0.028W / (m·K), and a hydrophobicity of ≥98%, which can simultaneously improve the thermal insulation and waterproof performance of the coating.

[0057] Furthermore, the S4 spraying process utilizes silent airless spraying equipment throughout, with construction noise ≤55dB and no exhaust emissions, making it suitable for residential areas, office areas, and other scenarios with high requirements for the construction environment.

[0058] Furthermore, during the S5 curing process, a breathable and dustproof protective film can be applied to the coating surface. The protective film is made of biodegradable and environmentally friendly material, which can avoid dust pollution. After curing, it can be recycled and reused, and no solid waste is generated.

[0059] The beneficial effects of this invention are:

[0060] Compared with existing technologies, the present invention has the following significant energy-saving, environmental protection, and technological advantages:

[0061] 1. Excellent environmental performance, achieving green and zero-waste construction. This invention uses pure water-based environmentally friendly materials that are low in VOCs, formaldehyde-free, and free of heavy metals throughout the entire process. All raw materials meet the ten-ring certification standards for green building materials. There is no release of harmful gases, dust, waste liquid, or solid waste pollution during construction and use. Through a closed-loop construction mode of dust recovery, paint waste liquid filtration and reuse, water resource recycling, and scrap material recycling, zero discharge of construction solid waste and water resource recycling are achieved, completely solving the problems of high pollution and high waste in traditional exterior wall construction and meeting the requirements for ultra-low emission green construction.

[0062] 2. Outstanding energy-saving effect, reducing building operation energy consumption. This invention's coating incorporates nano-aerogel insulating filler, resulting in an ultra-low thermal conductivity that effectively blocks outdoor heat conduction. In summer, it reduces wall surface temperature by 8-15°C, and in winter, it reduces indoor heat loss, significantly lowering the operating energy consumption of building air conditioning and heating equipment, increasing building energy efficiency by over 30%. Simultaneously, it employs a room-temperature, low-temperature natural curing process, eliminating the need for high-temperature heating equipment. Energy consumption during construction is reduced by over 85% compared to traditional methods, achieving dual energy savings in construction and building operation.

[0063] 3. Streamlined and efficient process, reducing overall costs. This invention abandons the traditional multi-layer construction mode of putty, primer, waterproof layer, and topcoat, achieving a two-step process of primer sealing and integrated functional coating. This reduces construction steps by more than 40% and shortens the construction cycle by 30%-50%, significantly reducing labor and equipment maintenance costs. Simultaneously, the integrated coating boasts high bonding strength and excellent integrity, eliminating the risk of interlayer peeling, and has a service life of over 15 years. This significantly reduces the frequency of later maintenance and renovation, minimizes secondary construction waste, and yields substantial comprehensive economic and environmental benefits.

[0064] 4. Stable integrated performance and wide applicability. The coating formed by this invention simultaneously possesses multiple functions such as high-efficiency waterproofing, heat insulation, decorative enhancement, weather resistance and anti-aging, and self-cleaning. The coating has strong density and excellent waterproof, seepage-proof, crack-resistant, and UV-resistant properties. It can adapt to various complex climatic environments such as high temperature, low temperature, high humidity, and heavy rain, and is suitable for various exterior wall construction scenarios such as residential buildings, office buildings, factories, and renovation of old buildings. It has extremely strong versatility and practicality.

[0065] Obviously, based on the above description of the present invention, and according to common technical knowledge and conventional methods in the field, various other modifications, substitutions or alterations can be made without departing from the basic technical concept of the present invention.

[0066] The following detailed embodiments further illustrate the above-described content of the present invention. However, this should not be construed as limiting the scope of the present invention to the following examples. All technologies implemented based on the above-described content of the present invention fall within the scope of the present invention. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of the process structure of the present invention. Detailed Implementation

[0068] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention. Figure 1 As shown, a method for applying an integrated waterproof and decorative coating to exterior walls is described.

[0069] Example 1

[0070] A method for applying an integrated waterproof and decorative coating to exterior walls includes the following steps:

[0071] S1. Environmental pretreatment of the base layer: A dust-free grinder and a dust collection device are used to clean the floating dust, oil stains and loose mortar of the exterior wall base layer. Inorganic environmentally friendly repair mortar is used to fill and level the cracks and holes of 0.5-5mm in the wall. Grinding dust is collected and filtered in real time and used for base layer backfilling and leveling. The wall moisture content is tested to be 9% and the pH value is 8.2, which meets the construction standards.

[0072] S2. Application of base layer moisture-proof sealing primer: Use water-based environmentally friendly sealing primer with VOC content of 18g / L, apply one coat with high pressure airless spray at 0.4MPa, with a thickness of 0.15mm, and allow to air dry at room temperature for 2.5 hours until fully dry.

[0073] S3. Integrated Coating Formulation: According to the mass ratio, Component A: 50 parts modified waterborne silicone-acrylic emulsion, 10 parts aerogel nano-insulating filler, 6 parts nano-silica waterproof powder, 18 parts inorganic mineral pigments and fillers, and 12 parts deionized water; Component B: 1.5 parts environmentally friendly dispersant, 0.8 parts waterborne leveling agent, 0.5 parts inorganic defoamer, and 0.3 parts pH adjuster. Mix and blend according to the preset procedure, and after filtration, obtain the environmentally friendly and energy-saving integrated coating with a VOC content of 12g / L.

[0074] S4. Layered spraying construction: After the primer is fully dry, the first coat of paint is 0.35mm thick and is allowed to air dry for 50 minutes to be surface dry; the second coat is 0.45mm thick, with a total coating thickness of 0.8mm. The spraying should be uniform and without defects.

[0075] S5. Low-temperature energy-saving curing and maintenance: Curing at room temperature of 25℃ and humidity of 55% with natural ventilation, without any heating equipment, and fully curing in 72 hours.

[0076] S6. Zero-waste finishing acceptance: Remaining paint and cleaning waste liquid are filtered and reused, construction wastewater is recycled for dust removal, scrap materials are recycled and backfilled, there is no solid waste discharge, and all acceptance indicators meet the standards.

[0077] Example 2

[0078] A method for applying an integrated waterproof and decorative coating to exterior walls includes the following steps:

[0079] S1. Environmental protection pretreatment of the base layer: For old exterior walls to be renovated, only the aged, peeling and damaged parts are cleaned, the intact base layer is preserved, and after dust-free grinding and cleaning, inorganic environmentally friendly repair mortar is used to repair defects. All dust is recycled and reused, and the wall moisture content is controlled at 8.5% and the pH value at 7.8.

[0080] S2. Application of base layer moisture-proof sealing primer: Use water-based environmentally friendly sealing primer, spray one coat at 0.35MPa pressure, with a thickness of 0.12mm, and air dry at room temperature for 2 hours to fully dry.

[0081] S3. Integrated coating formulation: Component A: 48 parts modified waterborne silicone-acrylic emulsion, 9 parts aerogel nano-insulation filler, 7 parts nano-silica waterproof powder, 17 parts inorganic mineral pigments and fillers, and 13 parts deionized water; Component B: 1.2 parts environmentally friendly dispersant, 0.6 parts waterborne leveling agent, 0.4 parts inorganic defoamer, and 0.3 parts pH adjuster. Stir and mix to obtain a qualified coating.

[0082] S4. Layered spraying construction: The first spraying thickness is 0.3mm, and it is air-dried for 45 minutes; the second spraying thickness is 0.4mm, and the total coating thickness is 0.7mm.

[0083] S5. Low-temperature energy-saving curing and maintenance: Natural curing at room temperature (22℃) and humidity (50%) for 72 hours, the coating will naturally cure and form.

[0084] S6. Zero-waste completion acceptance: Achieve 100% recycling and reuse of construction waste, and meet all environmental protection, energy saving and waterproofing standards.

[0085] Example Performance Test Results

[0086] The performance of the exterior wall coatings constructed in Examples 1 and 2 of this invention was tested, and the results are as follows: the thermal conductivity of the coating is ≤0.035W / (m·K), the waterproof and seepage-resistant pressure is ≥0.6MPa, the bonding strength is ≥1.2MPa, and the resistance to artificial aging is ≥2000h without peeling, fading, or cracking; the VOC content of the coating is ≤15g / L, and no formaldehyde or heavy metals were detected; the construction energy consumption is reduced by 86% compared with the traditional process, the energy saving rate of the building exterior wall is increased by 32%, and the construction solid waste emission reduction rate is over 95%. All energy-saving, environmental protection, and performance indicators are superior to the existing traditional construction process and fully meet the requirements of green building energy-saving construction specifications.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0088] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for constructing an exterior wall waterproofing and decoration integrated coating, characterized in that, The construction steps include the following: S1. Environmental protection pretreatment of the base layer: Dust-free grinding combined with wet dust removal is used to clean the debris, floating dust and damaged coating of the base layer of the exterior wall. Inorganic environmentally friendly repair mortar is used to repair cracks and holes in the wall. Dust is collected and reused in a centralized manner. The moisture content of the wall is controlled to be ≤10% and the pH value is 7-9. S2. Construction of base layer moisture-proof sealing primer: Low VOC water-based environmentally friendly sealing primer is used, and the high-pressure airless spraying is carried out. It is then naturally air-dried and cured at room temperature. S3. Energy-saving and environmentally friendly integrated waterproof and decorative coating formulation: Modified water-based silicone acrylic emulsion, aerogel nano-insulation filler, nano-silica waterproof powder, inorganic mineral pigments and fillers and environmentally friendly additives are compounded and stirred to prepare a low-VOC, energy-saving and heat-insulating integrated functional coating. S4. Integrated coating layer spraying construction: After the primer is fully dry, the integrated coating is sprayed in two layers. There is no need for putty, waterproof intermediate layer and topcoat layer construction. It integrates multiple functions in one step. S5. Low-temperature energy-saving curing and maintenance: Curing and maintenance at room temperature with natural ventilation, without the need for high-temperature heating equipment, and naturally forming a film; S6. Zero-waste final acceptance: All construction waste liquids, waste materials and wastewater are recycled and reused, there is no external discharge of construction waste, and the energy-saving and environmental protection quality acceptance is completed.

2. The method for applying an integrated waterproof and decorative coating for exterior walls according to claim 1, characterized in that: The water-based environmentally friendly sealing primer described in S2 has a VOC content of ≤20g / L, is free of benzene, formaldehyde, and heavy metals, has a spraying pressure of 0.3-0.5MPa, a coating thickness of 0.1-0.2mm, and a room temperature drying time of 2-3h.

3. The construction method of the exterior wall waterproofing and decoration integrated coating according to claim 1, characterized in that: The S3 integrated coating, by weight proportions, includes: 45-55 parts modified waterborne silicone-acrylic emulsion, 8-12 parts aerogel nano-insulating filler, 5-8 parts nano-silica waterproof powder, 15-20 parts inorganic mineral pigments and fillers, 10-15 parts deionized water, 1-2 parts environmentally friendly dispersant, 0.5-1 part waterborne leveling agent, 0.3-0.8 parts inorganic defoamer, and 0.2-0.5 parts pH adjuster. The total VOC content of the coating is ≤15g / L.

4. The construction method of an exterior wall waterproofing and decoration integrated coating according to claim 1, characterized in that: The first coat of S4 has a thickness of 0.3-0.4mm and a surface drying time of 40-60 minutes; the second coat has a thickness of 0.4-0.5mm, and the total coating thickness is 0.7-0.9mm. It adopts a cross-spraying process with horizontal and vertical spraying, and there are no defects such as missed spraying or sagging.

5. The construction method of an exterior wall waterproofing and decoration integrated coating according to claim 1, characterized in that: S5 medium curing and maintenance environment temperature 5-38℃, relative humidity 40%-70%, complete curing cycle 72h, after curing the coating thermal conductivity ≤0.035W / (m·K), waterproof and seepage-resistant pressure ≥0.6MPa.

6. The construction method of an exterior wall waterproofing and decoration integrated coating according to claim 1, characterized in that: The inorganic environmentally friendly repair mortar described in S1 is a formaldehyde-free, heavy metal-free, biodegradable inorganic mortar. All grinding dust is recycled and used for base layer backfilling and leveling, achieving zero dust emissions.

7. The construction method of an exterior wall waterproofing and decoration integrated coating according to claim 1, characterized in that: In S6, the remaining paint waste liquid from construction is filtered and then mixed and reused. The equipment cleaning wastewater is settled and then recycled for dust removal of the base layer. The scraps are recycled as insulation backfill material, achieving 100% recycling of solid waste and wastewater.

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