Environment-friendly indoor wall surface construction process

Abstract

The invention relates to the technical field of building decoration and finishing, and discloses an environment-friendly indoor wall surface construction process which comprises the following steps: firstly, cleaning a wall surface, constructing a leveling layer, scraping putty powder on the surface of the leveling layer, applying primer to form a stable foundation frame, and sequentially adding a damp-proof layer, a sound insulation layer, a purification layer and a reinforcing layer. The method comprises the steps that putty powder is used as a raw material to jointly form a functional layer with complete functions, the remaining putty powder is used for repairing the surface of the functional layer, it is guaranteed that the surface of the functional layer is smooth and flawless, then environment-friendly latex paint is brushed or natural wall cloth is laid, panel decoration is conducted, the attractiveness and practicability of a wall face are improved, and finally the environment-friendly water-based fluorocarbon antifouling paint is smeared on the wall face. By introducing the photocatalyst purification layer and the composite functional layer, efficient formaldehyde decomposition and low-noise transmission can be achieved, the impact resistance of the wall surface can be enhanced, the performance of the wall surface is comprehensively improved, and the process has the advantages of being environmentally friendly, functional and convenient and efficient to construct.

Description

Technical Field

[0001] The invention relates to the technical field of building decoration and renovation, and in particular to an environmentally friendly indoor wall construction process. Background Art

[0002] In modern interior decoration, wall construction is one of the key links, which not only affects the beauty of the interior, but also directly relates to the health and comfort of the living environment. Traditional wall construction techniques mostly use ordinary putty powder, chemical synthetic primers and solvent-based paints. These materials are prone to release volatile organic compounds (VOCs) and other harmful substances, such as formaldehyde and benzene, during construction and use, which pose potential hazards to indoor air quality and human health. In addition, traditional techniques also have problems in terms of functionality, such as poor sound insulation, limited moisture-proof effect, and weak impact resistance, making it difficult to meet the diverse functional requirements of modern indoor environments for walls.

[0003] With the increasing awareness of environmental protection and people's pursuit of a healthy living environment, it is particularly important to develop an environmentally friendly indoor wall construction process. However, the environmentally friendly wall materials and processes currently on the market have the problem of balancing environmental performance and functionality. They are either more environmentally friendly but less functional, or more functional but less environmentally friendly. Therefore, there is an urgent need for an environmentally friendly indoor wall construction process that can effectively reduce the release of harmful substances and comprehensively improve the functionality of the wall to meet the dual needs of modern interior decoration for environmental protection and functionality. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an environmentally friendly interior wall construction process, which has the advantages of taking both environmental protection and functionality into consideration, and convenient and efficient construction. It solves the problems of the difficulty in balancing environmental performance and functionality in traditional processes, as well as the complex construction process and low efficiency.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solution: an environmentally friendly indoor wall construction process, comprising the following steps:

[0008] Step 1: Base frame: First clean the wall, build a leveling layer, scrape putty powder on the surface of the leveling layer, and after drying, use a natural plant-based penetrating primer with a bio-based content of ≥30%. The thickness of the primer is 0.5-0.8mm, and the basic frame is formed;

[0009] Step 2: Middle functional layer: Add moisture-proof layer, sound insulation layer, purification layer and reinforcement layer on the basic frame to form the functional layer;

[0010] Step 3. Repair of the middle functional layer: Use the remaining putty powder in Step 1 to supplement and repair the local unevenness and hole defects on the surface of the middle functional layer, and then polish with 600 - 800 - mesh sandpaper;

[0011] Step 4. Surface decorative layer: After the surface is leveled, apply environmentally friendly latex paint or lay natural wall cloth, and then carry out panel decoration;

[0012] Step 5. Surface protection layer: Select an environmentally friendly water - based fluorocarbon anti - pollution coating, and use a spray gun to evenly apply the anti - pollution coating on the wall to form an anti - pollution coating.

[0013] Preferably, for the leveling layer: Use cement - based leveling mortar to conduct a basic filling of 3 - 5 mm on the wall surface. The weight ratio of cement to sand in the cement - based leveling mortar is 1:3 or 1:2.5. Dry at normal temperature for 4 - 6 days, and polish it flat with 600 - 800 - mesh sandpaper to complete the leveling layer.

[0014] Preferably, the composition of the putty powder: Take water, gypsum - based putty powder, and heavy calcium powder and mix them in a mass ratio of 4:3:3, and then incorporate 3% - 5% of the total mass ratio of waterproofing agent, and stir for 20 - 35 min to make putty powder, and measure its bonding strength ≥ 0.6 MPa.

[0015] Preferably, apply the putty powder 2 times. The thickness of the first layer is 1.0 - 1.4 mm, construct unidirectionally with the scraper inclined at 45°, dry at 25 - 30 °C for 4 - 6 h, and polish with 300 - 400 - mesh sandpaper after drying. The thickness of the second layer is 0.6 - 0.9 mm, finish with cross - direction polishing, dry at 28 - 35 °C for 7 - 10 h, and after drying, use 600 - 700 - mesh sandpaper. After scraping, the surface roughness Ra ≤ 3.2 μm is measured.

[0016] Preferably, for the moisture - proof layer: Use an environmentally friendly waterproof coating to brush, with a thickness of 0.8 - 1.2 mm, and dry at a temperature of 30 - 35 °C for 24 - 36 h.

[0017] Preferably, for the sound - insulation layer: Use an environmentally friendly extruded polystyrene board as the heat - insulation material, with its thermal conductivity ≤ 0.035 W / (m·K) and a thickness of 20 - 30 mm.

[0018] Preferably, for the purification layer: Mix an environmentally friendly photocatalyst material and a diluent in a ratio of 10:1 evenly, and the thickness of the purification layer is 1 - 1.6 mm.

[0019] Preferably, for the reinforcement layer: Use an environmentally friendly fiberglass mesh cloth, with its mesh size of 3 - 5 mm, and the breaking strength in both the warp and weft directions ≥ 1300 N / 50 mm. After cutting it into a suitable size, lay it between the moisture - proof layer, sound - insulation layer, and purification layer, and the lap width of adjacent two pieces of cloth is 6 - 8 mm.

[0020] Preferably, the environmentally friendly latex paint is selected from one of water-based zero-VOC latex paint or organic latex paint, and its painting thickness is 0.6 - 0.1 mm. The natural wall covering is selected from one of natural linen or ramie wall covering. The panel decoration is selected from one or two of wood decorative panels, metal decorative panels, ceramic thin plates or stone plastic decorative panels for decoration.

[0021] Preferably, the spray gun pressure is controlled at 0.4 - 0.5 MPa, the dosage per square meter is 0.1 - 0.12 kg, and an anti-fouling coating with a thickness of 0.08 - 0.1 mm is formed.

[0022] Compared with the prior art, the present invention provides an environmentally friendly interior wall construction process, which has the following beneficial effects:

[0023] 1. By using environmentally friendly materials such as natural plant-based penetrating primer with a bio-based content ≥ 30% and zero-VOC water-based paint, the present invention achieves the beneficial effect of effectively reducing the release and residue of harmful substances indoors, thereby improving the indoor environmental quality.

[0024] 2. Through the design of introducing a photocatalyst purification layer and a composite functional layer (moisture-proof + sound insulation + purification), the present invention achieves the beneficial effects of efficiently decomposing formaldehyde, reducing noise transmission, and enhancing the impact resistance of the wall, thereby realizing multi-scene adaptation and comprehensive improvement of wall performance.

[0025] 3. By optimizing the construction process and material ratio, and using cement-based leveling mortar, putty powder with a specific ratio, and environmentally friendly waterproof paint, the present invention not only achieves the beneficial effects of improving construction quality and efficiency, ensuring the flatness and stability of the wall, but also meets the requirements of different indoor environments for wall functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the process flow chart of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1 , an environmentally friendly interior wall construction process, including the following steps:

[0029] Step 1. Basic framework: First, clean the wall surface (remove the floating dust, oil stains on the wall surface, and repair cracks), which helps improve the adhesion of the leveling layer, enables the leveling layer to better combine with the wall surface, reduces the occurrence of problems such as hollowing and peeling, constructs the leveling layer, and uses sandpaper to polish, which helps improve the overall aesthetic degree of the wall surface. At the same time, it provides a uniform base for the subsequent putty powder construction, makes the application of putty powder smoother, and improves the construction efficiency. Scrape putty powder on the surface of the leveling layer. After drying, use a natural plant-based penetrating primer with a bio-based content ≥ 30%, and the thickness of the primer is 0.5 - 0.8 mm to enhance the adhesion and moisture-proof performance of the wall surface, while reducing the release of harmful substances, forming the basic framework;

[0030] Step 2. Middle functional layer: Add a moisture-proof layer, a sound-insulating layer, a purification layer, and a reinforcement layer on the basic framework to form the functional layer. The moisture-proof layer can effectively prevent moisture from penetrating into the interior of the wall surface, protect the wall surface from water erosion, and prevent problems such as mildew, peeling, and falling off of the wall surface due to moisture, extend the service life of the wall surface, and at the same time keep the indoor environment dry and improve the living comfort. The sound-insulating layer can effectively isolate external noises, improve the quietness of the interior, create a quiet living environment for the residents, and at the same time reduce the impact of noise on human health, such as relieving stress and improving sleep. The photocatalyst material in the purification layer can generate free radicals under light conditions, and the free radicals can decompose bacteria and viruses in the air, having the effect of sterilization and disinfection, thereby further improving the hygiene level of the indoor environment. The reinforcement layer can effectively prevent problems such as deformation and cracking of the wall surface caused by factors such as temperature change and humidity change, and keep the flatness and integrity of the wall surface;

[0031] Step 3. Repair of the middle functional layer: Use the remaining putty powder in Step 1 to supplement and repair the local unevenness and hole defects on the surface of the middle functional layer, and then use 600 - 800 mesh sandpaper to polish. By repairing the local unevenness and hole defects, it can effectively prevent these parts from becoming channels for water and air penetration, further improve the moisture-proof and sound-insulating performance of the wall surface. At the same time, the flat surface is also conducive to the construction of the subsequent surface decoration layer, enabling the decoration layer to adhere more evenly to the wall surface and improving the decoration effect;

[0032] Step 4. Surface decoration layer: After the surface is flat, apply environmentally friendly latex paint or paste natural wall covering, and then carry out panel decoration. Panel decoration can increase the three-dimensional sense and layering of the wall surface, improve the decoration effect and aesthetic degree of the wall surface. Different types of panels have different textures and characteristics, and are selected according to the decoration style and personal preferences. For example, wood veneer panels can bring a natural and warm atmosphere, metal decorative panels can show a modern and fashionable feeling, and ceramic thin panels and stone plastic decorative panels have the characteristics of beauty and durability;

[0033] Step Five, Surface Protective Layer: Select an environmentally friendly water-based fluorocarbon anti-fouling paint, which has good anti-fouling properties, antibacterial properties, and self-cleaning function. Use a spray gun to evenly apply the anti-fouling paint on the wall surface to form an anti-fouling coating. The anti-fouling coating can effectively prevent the wall surface from being contaminated by stains, keep the wall surface clean and beautiful. Its antibacterial performance can inhibit the growth of bacteria, molds, and other microorganisms, reduce the possibility of bacteria breeding on the wall surface, and improve the sanitation level of the indoor environment. Its self-cleaning function can enable the wall surface to automatically decompose the surface stains under natural conditions of rain and sunlight, reduce the frequency of manual cleaning, and lower the maintenance cost.

[0034] Specifically, leveling layer: Use cement-based leveling mortar to conduct a basic filling of 3 - 5 mm on the wall surface. The weight ratio of cement to sand in the cement-based leveling mortar is 1:3 or 1:2.5. Dry at normal temperature for 4 - 6 days, and polish it smoothly with 600 - 800 grit sandpaper to remove the rough parts on the surface, ensuring the flatness of the wall surface. The leveling layer is completed.

[0035] Specifically, composition of putty powder: Take water, gypsum-based putty powder, and heavy calcium powder (325 mesh) and mix them in a mass ratio of 4:3:3, and then incorporate 3% - 5% of the total mass ratio of waterproofing agent, and stir for 20 - 35 min to make putty powder. Measure its bond strength ≥ 0.6 MPa (GB / T 9779 - 2015) to ensure that the material fully penetrates and forms an effective waterproof layer.

[0036] Specifically, apply putty powder twice. The thickness of the first layer is 1.0 - 1.4 mm, and the scraper is inclined at 45° for one-way construction. Dry at 25 - 30 °C for 4 - 6 h. After drying, use 300 - 400 grit sandpaper to polish, and check for no sand holes after dust suction. The thickness of the second layer is 0.6 - 0.9 mm, and the light is collected in the cross direction. Dry at 28 - 35 °C for 7 - 10 h. After drying, use 600 - 700 grit sandpaper. After scraping, the surface roughness Ra ≤ 3.2 μm (measured by a stylus roughness meter).

[0037] Specifically, moisture-proof layer: Use an environmentally friendly waterproof paint (such as JS elastic waterproof paint) for brushing, with a thickness of 0.8 - 1.2 mm. Dry at a temperature of 30 - 35 °C for 24 - 36 h, and conduct a water retention test to ensure no leakage. The moisture-proof layer can effectively prevent moisture from penetrating into the wall interior, protect the wall from water erosion, prevent problems such as mildew, peeling, and falling off of the wall surface due to moisture, extend the service life of the wall surface, and at the same time keep the indoor environment dry and improve the living comfort.

[0038] Specifically, sound insulation layer: Use an environmentally friendly extruded polystyrene board as the heat insulation material, with its thermal conductivity ≤ 0.035 W / (m·K) and a thickness of 20 - 30 mm. Ensure it is flat during laying to reduce noise transmission.

[0039] Specifically, purification layer: An environmentally friendly photocatalyst material is evenly mixed with a diluent in a ratio of 10:1 (for example, nano-titanium dioxide is dispersed in an environmentally friendly water-based emulsion). The thickness of the purification layer is 1 - 1.6 mm, and it is evenly applied. This layer can be used to decompose formaldehyde and other harmful substances, and at the same time has a heat insulation effect.

[0040] Specifically, reinforcement layer: Use an environmentally friendly fiberglass mesh cloth with a mesh size of 3 - 5 mm and a breaking strength of ≥1300 N / 50 mm in both the warp and weft directions. After cutting it into appropriate sizes, lay it between the moisture-proof layer, sound-insulating layer and purification layer to ensure flatness and straightness. The overlapping width of two adjacent pieces of cloth is 6 - 8 mm to enhance the stability of the overall structure.

[0041] Specifically, the environmentally friendly latex paint is selected from one of water-based zero-VOC latex paint or organic latex paint, with a brushing thickness of 0.6 - 0.1 mm. The natural wall covering is selected from one of natural linen or ramie wall coverings, and the panel decoration is selected from one or two of wood decorative panels, metal decorative panels, ceramic thin plates or stone plastic decorative panels for decoration.

[0042] Specifically, the spray gun pressure is controlled at 0.4 - 0.5 MPa, and the dosage per square meter is 0.1 - 0.12 kg to form an anti-fouling coating with a thickness of 0.08 - 0.1 mm.

[0043] Example 1 (Environmental protection optimization)

[0044] S1. Material ratio:

[0045] (1) Putty powder: water, gypsum-based putty powder, heavy calcium powder (4:3:3) + 4% waterproof agent (silane-modified resin);

[0046] (2) Photocatalyst purification layer: nano-titanium dioxide (10%) + water-based emulsion (90%).

[0047] S2. Construction parameters:

[0048] (1) Anti-fouling coating: spraying with water-based fluorocarbon paint (pressure 0.45 MPa, thickness 0.09 mm);

[0049] (2) Latex paint: zero-VOC water-based paint, brushing thickness 0.08 mm.

[0050] Advantages: It has an environmentally friendly enhanced design, uses bio-based / VOC-free materials throughout the process (bio-based content in the primer ≥30%, adhesive formaldehyde-free), and decomposes formaldehyde through the photocatalyst purification layer to reduce TVOC residues.

[0051] Example 2 (Functional enhancement)

[0052] S1. Multi-layer structure:

[0053] (1) Sound insulation layer: 30 mm extruded polystyrene board (thermal conductivity 0.032 W / (m·K));

[0054] (2) Reinforcement layer: double-layer fiberglass mesh cloth (breaking strength 1500 N / 50 mm).

[0055] S2. Performance parameters:

[0056] (1) Waterproof layer: JS coating with a thickness of 1.2 mm, and no leakage after 48 hours of water immersion test;

[0057] (2) Anti-fouling coating: spraying coverage rate of 0.12 kg / ㎡, and scrub resistance ≥ 10,000 times.

[0058] Advantages: It has a functional enhancement design, and realizes multi-scenario adaptation through a composite functional layer (moisture-proof + sound insulation + purification), and a high-strength reinforcement layer improves the wall impact resistance (≥ 5 kJ / m 2 ).

[0059] Comparative example 1 (traditional process)

[0060] T1. Material replacement:

[0061] (1) Putty powder: glue-containing putty;

[0062] (2) Primer: solvent-based epoxy primer.

[0063] T2. Parameter comparison:

[0064] (1) Matte photocatalyst purification layer, TVOC release amount ≥ 0.8 mg / m 3 ;

[0065] (2) Anti-fouling coating is solvent-based fluorocarbon paint.

[0066] Compare with Example 1 to verify the effectiveness of the materials in Comparative Example 1 in controlling harmful substances.

[0067] Comparative example 2 (simplified functional layer process)

[0068] T1. Structure simplification:

[0069] (1) Cancel the sound insulation layer and purification layer, and only retain the moisture-proof layer;

[0070] (2) The reinforcement layer uses a single-layer mesh cloth (breaking strength 800 N / 50 mm).

[0071] T2. Parameter comparison:

[0072] (1) Sound insulation quantity Rw ≤ 35 dB (in Example 2 it is ≥ 45 dB);

[0073] (2) Formaldehyde purification rate ≤ 30% (≥ 85% in Example 2).

[0074] Comparing with Example 2, the performance of the composite functional layer in Comparative Example 2 decreases.

[0075] The following is the performance comparison table between examples and comparative examples:

[0076]

[0077] It can be obtained from the above table that:

[0078] 1. In terms of environmental protection: The TVOC emissions of Example 1 and Example 2 are much lower than those of Comparative Example 1 and Comparative Example 2, which indicates that the bio-based / VOC-free materials used in the examples (such as primers with a bio-based content ≥ 30% and zero-VOC waterborne paints, etc.) are more effective than the comparative examples in controlling the release of harmful substances. Among them, the TVOC emissions of Example 1 are the lowest, meeting the national standard GB / T 18883, indicating that its environmental protection design is the most excellent; the formaldehyde purification rates of Example 1 and Example 2 are relatively high, especially in Example 1, whose photocatalyst purification layer can effectively decompose formaldehyde, making the formaldehyde purification rate reach more than 85%. However, in Comparative Example 1, due to the absence of a photocatalyst purification layer, the formaldehyde purification rate is extremely low. Although Comparative Example 2 has a purification layer, due to reasons such as simplified structure, the purification rate is also lower than that of the examples. Therefore, Example 1 performs best in terms of environmental protection. Through the use of environmentally friendly materials throughout the process and the design of the photocatalyst purification layer, it can effectively reduce the release and residue of harmful substances. In contrast, Comparative Example 1 uses traditional glue-containing putty and solvent-based epoxy primer materials, resulting in poor environmental protection and being unable to meet the indoor environmental protection requirements.

[0079] 2. In terms of functionality: The sound insulation of Example 2 is the highest, reaching more than 45 dB. Due to its 30-mm-thick extruded polystyrene board sound insulation layer, it can effectively reduce noise transmission. The sound insulation of Example 1 is 40 dB, which also meets the standard value. The sound insulation of Comparative Example 1 and Comparative Example 2 is relatively low. In Comparative Example 2, the sound insulation layer is removed, and only the moisture-proof layer is retained, resulting in a significant decline in its sound insulation performance; the moisture-proof water closure tests of Example 1 and Example 2 are both passed, and the water closure time of Example 2 is longer, reaching 48 hours, indicating that its moisture-proof layer has good performance. The moisture-proof water closure tests of Comparative Example 1 and Comparative Example 2 can also be passed, but the water closure time is shorter, indicating that their moisture-proof performance is relatively weak; the impact resistance of Example 2 is the strongest, reaching 5.0 kJ / m 2 Above, due to its double-layer fiberglass mesh reinforcement layer, it can effectively improve the impact resistance of the wall surface. The impact resistance of Example 1 is 3.5 kJ / m 2 , the impact resistance of Comparative Example 1 is the lowest, only 2.0 kJ / m 2 , and the impact resistance of Comparative Example 2 is 2.5 kJ / m 2, all are lower than those of Example 2. Therefore, Example 2 performs the most comprehensively and outstandingly in terms of functionality. Through the design of the composite functional layer (moisture-proof, sound-insulating, purifying) and the application of the high-strength reinforcement layer, it can achieve multi-scenario adaptation and a significant improvement in wall performance, thus meeting the requirements of different indoor environments for wall functions. However, due to the simplified structure of Comparative Example 2, its functionality is greatly reduced and it cannot be compared with the examples.

[0080] Summary: Generally speaking, Example 1 and Example 2 are superior to Comparative Example 1 and Comparative Example 2 in terms of environmental protection and functionality. Example 1 performs outstandingly in terms of environmental protection through the use of environmentally friendly materials throughout the process and the design of the photocatalyst purification layer, which can effectively reduce the release and residue of harmful substances and provide guarantee for the indoor environmental quality. Example 2 performs the most comprehensively and outstandingly in terms of functionality. The design of its composite functional layer and high-strength reinforcement layer can meet the requirements of multi-scenario adaptation and the improvement of wall performance.

[0081] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environment-friendly indoor wall construction process, characterized in that, It includes the following steps: Step 1, basic framework: First, clean the wall surface, construct a leveling layer, scrape putty powder on the surface of the leveling layer, and after drying, use a natural plant-based penetrating primer with a bio-based content of ≥ 30%, and the thickness of the primer is 0.5 - 0.8 mm to form the basic framework; Step 2, middle functional layer: Add a moisture-proof layer, a sound-insulating layer, a purification layer, and a reinforcement layer on the basic framework to form the functional layer; Step 3, repair of the middle functional layer: Use the remaining putty powder in Step 1 to supplement and repair the local unevenness and hole defects on the surface of the middle functional layer, and then polish with 600 - 800 mesh sandpaper; Step 4, surface decorative layer: After the surface is leveled, apply environmentally friendly latex paint or paste natural wall cloth, and then carry out panel decoration; Step 5, surface protection layer: Select an environmentally friendly water-based fluorocarbon anti-fouling paint, and use a spray gun to evenly apply the anti-fouling paint on the wall surface to form an anti-fouling coating.

2. The environmentally friendly indoor wall construction process according to claim 1, wherein: The leveling layer: Use cement-based leveling mortar to conduct a basic filling of 3 - 5 mm on the wall surface. The weight ratio of cement to sand in the cement-based leveling mortar is 1:3 or 1:2.5, dry at normal temperature for 4 - 6 days, and polish smoothly with 600 - 800 mesh sandpaper to complete the leveling layer.

3. The environmentally friendly indoor wall construction process according to claim 1, characterized in that: The composition of the putty powder: Take water, gypsum-based putty powder, and heavy calcium powder and mix them in a mass ratio of 4:3:3, and then incorporate 3% - 5% of the total mass ratio of waterproofing agent, and stir for 20 - 35 min to make the putty powder, and measure its bond strength ≥ 0.6 MPa.

4. The environmentally friendly indoor wall construction process according to claim 3, characterized in that: The putty powder is scraped twice. The thickness of the first pass is 1.0 - 1.4 mm, and the scraper is inclined at 45° for one-way construction, and dried at 25 - 30 °C for 4 - 6 h. After drying, polish with 300 - 400 mesh sandpaper. The thickness of the second pass is 0.6 - 0.9 mm, and the light is collected in the cross direction, and dried at 28 - 35 °C for 7 - 10 h. After drying and scraping with 600 - 700 mesh sandpaper, the surface roughness Ra ≤ 3.2 μm is measured.

5. The environmentally friendly interior wall construction process according to claim 1, wherein: The moisture-proof layer: Use an environmentally friendly waterproof paint to brush, with a thickness of 0.8 - 1.2 mm, and dry at a temperature of 30 - 35 °C for 24 - 36 h.

6. The environmentally friendly indoor wall construction process according to claim 1, characterized in that: The sound-insulating layer: Use an environmentally friendly extruded polystyrene board as the heat-insulating material, with a thermal conductivity ≤ 0.035 W / (m·K) and a thickness of 20 - 30 mm.

7. An environment-friendly indoor wall construction process according to claim 1, characterized in that: The purification layer: Use an environmentally friendly photocatalyst material and a diluent to be mixed evenly in a ratio of 10:1, and the thickness of the purification layer is 1 - 1.6 mm.

8. The environmentally friendly interior wall construction process according to claim 1, characterized in that: The reinforcement layer: Use an environmentally friendly fiberglass mesh cloth with a mesh size of 3 - 5 mm, and the breaking strength in the warp and weft directions is ≥ 1300 N / 50 mm. After cutting it into a suitable size, lay it between the moisture-proof layer, the sound-insulating layer, and the purification layer, and the lap width of adjacent two pieces of cloth is 6 - 8 mm.

9. The environmentally friendly indoor wall construction process according to claim 1, characterized in that: The environmentally friendly latex paint is selected from one of water-based zero-VOC latex paint or organic latex paint, and its brushing thickness is 0.6 - 0.1 mm. The natural wall cloth is selected from one of natural linen or ramie wall cloth, and the panel decoration is selected from one or two of wood decorative panels, metal decorative panels, ceramic thin plates, or stone plastic decorative panels for decoration.

10. The environmentally friendly interior wall construction process according to claim 1, characterized in that: The pressure of the spray gun is controlled at 0.4 - 0.5 MPa, the dosage per square meter is 0.1 - 0.12 kg, and an anti-fouling coating with a thickness of 0.08 - 0.1 mm is formed.

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