Environment-friendly indoor wall decoration method

Abstract

The invention discloses a green and environment-friendly indoor wall surface decoration method which is characterized by comprising the following steps of repairing a wall surface base layer, brushing an interface agent, smearing a putty layer, polishing the putty layer, spraying primer and coating finish paint to finish decoration of an indoor wall surface, gridding cloth is laid on the wall surface and the surface of the putty smeared for the first time in the putty smearing process, and the gridding cloth on the surface of the putty smeared for the second time needs to be completely wrapped by the putty smeared for the second time; through the arrangement of the two layers of gridding cloth, the connection firmness between the first putty layer and the wall surface and between the second putty layer and the first putty layer can be improved, meanwhile, due to the high tensile strength and flexibility of the gridding cloth, when the wall surface is subjected to temperature change, humidity change or structural stress, the gridding cloth can absorb and disperse the stress, and therefore the wall surface is prevented from being damaged. Therefore, the putty layer or the wall body is prevented from cracking, and the formaldehyde release speed of the putty layer can be slowed down.

Description

Technical Field

[0001] The invention relates to the technical field of wall decoration, and in particular to a green and environment-friendly indoor wall decoration method. Background Art

[0002] Indoor wall decoration is an important part of house decoration. Wall decoration not only increases the aesthetics of the wall, but also protects the wall. The existing decoration methods for indoor walls include painting, wallpapering, wall tiles, etc. The general construction steps are wall repair, putty leveling, polishing the putty layer, applying primer and topcoat, and subsequent treatment.

[0003] Among them, putty leveling is an especially important step in the entire construction process. If the putty layer cracks, peels off, etc., it will affect the subsequent application of primer and topcoat. In the actual construction process, cracking of the putty layer is a very common problem. Since the putty layer is usually applied twice, the second layer of putty can only be applied after the first layer of putty is completely dry, otherwise cracking will occur due to the different shrinkage between the two layers of putty. At present, workers usually rely on the color change or feel of the putty and other means that require experience to judge whether the first layer of putty is completely dry, but this subjective judgment method may lead to misjudgment, and because the wall is large and the environment is different, the putty will dry unevenly, causing the putty in those areas that are not completely dry to crack after the second layer of putty is applied, affecting the quality of wall decoration. Summary of the invention

[0004] The invention provides a green and environment-friendly indoor wall decoration method, which solves the problem of cracking of putty after construction in the related art.

[0005] To achieve the above object, the technical solution adopted by the present invention is a green and environmentally friendly indoor wall decoration method, which includes the following steps:

[0006] S1. Repair the wall base: Check the flatness of the wall, clean the dust, oil and other impurities on the wall, and then fill the uneven parts of the wall to ensure that the wall is flat and smooth;

[0007] S2. Apply interface agent: Apply a layer of interface agent on the wall to enhance the bonding between the new and old materials and to prevent moisture and cracking;

[0008] S3, applying a putty layer: applying putty evenly on the wall twice, and laying mesh cloth on the wall and the surface of the first applied putty during the process of applying putty, and the second applied putty should completely cover the mesh cloth on the surface of the first putty;

[0009] S4, polishing the putty layer: repairing and polishing the putty layer applied in S3;

[0010] S5, spray primer: spray anti-alkali sealing primer on the surface of the putty layer polished and smoothed in S4;

[0011] S6. Apply topcoat: prepare green and environmentally friendly paint for topcoat, and then apply two layers of topcoat on the surface of the putty layer sprayed with primer; apply the second layer of topcoat after the first layer of topcoat is applied and dried, and both layers of topcoat need to be polished and smoothed after application. When applying the topcoat, use a spray gun to spray the large area in the middle of the wall, and stop when the large area in the middle of the wall is 20-30 cm away from the corners of the wall. Use manual brushing on the corners of the wall, and then dry naturally for 1-2 days to complete the interior wall decoration.

[0012] The present invention is further configured that the specific steps of S3 are as follows:

[0013] A1. Laying the first mesh cloth: preparing a mesh cloth made of breathable and water-absorbent fiber, cutting the mesh cloth according to the size of the wall, and then pasting the mesh cloth on the wall using an interface agent to obtain the first mesh cloth;

[0014] A2. Wire installation: Tie wires perpendicular to the wall on the first mesh cloth. The wires are evenly distributed on the first mesh cloth to prepare for the subsequent installation of color-changing silica gel.

[0015] A3. Apply the first putty layer: prepare the putty, and then apply the putty evenly on the wall surface, and make sure that the wall surface is flat and smooth. At the same time, let the putty layer completely cover the first mesh cloth, and make sure that the iron wire is exposed on the surface of the putty layer;

[0016] A4. Install color-changing silica gel: insert the detection block made of color-changing silica gel onto the iron wire and deep into the first putty layer;

[0017] A5. Laying the second mesh cloth: After the first putty layer is dried to a semi-dry state, a mesh cloth matching the size of the wall is laid on the surface of the first putty layer to obtain the second mesh cloth;

[0018] A6. Repair and polish the surface of the first putty layer: judge the dryness of the first putty layer by observing the color of the color-changing silica gel; after the first putty layer is completely dry, cut the test block so that it is flush with the first putty layer, and then repair the surface of the first putty layer by applying putty and polishing it;

[0019] A7. Apply the second putty layer: Apply putty evenly on the surface of the first putty layer to obtain the second putty layer, and make the second putty layer completely wrap the second mesh cloth, then wait for it to dry, and complete the application of the putty layer.

[0020] The present invention is further configured such that the first mesh cloth is connected to one side of the second mesh cloth, and when the first putty layer is in a semi-dry state, the second mesh cloth is folded toward the surface of the first putty layer so as to be laid on the surface of the first putty layer.

[0021] The present invention is further configured such that, in the A1 step, after the first mesh cloth is laid, a pressing sheet with the same thickness as the first putty layer can be fixed on the edge of one side of the wall base, the pressing sheet is located between the connection between the first mesh cloth and the second mesh cloth, and the edge of the first mesh cloth is fixed on the wall base, and then putty is coated on the wall base to form a first putty layer, and the first putty layer must completely cover the pressing sheet.

[0022] The present invention is further configured such that the mesh cloth is made of breathable and water-absorbent fibers, and the fibers are hollow in structure.

[0023] The present invention is further configured such that the mesh cloth is a hollow polyester fiber mesh cloth.

[0024] The present invention is further configured that the putty comprises the following components of mass:

[0025] Talc: 45-55 parts;

[0026] Heavy calcium carbonate powder: 18-22 parts;

[0027] Nano titanium dioxide: 4-6 parts;

[0028] Hydroxypropyl methylcellulose: 0.8-1.0 part;

[0029] Sodium glutamate: 5-6 parts;

[0030] Amino acids: 5-6 parts;

[0031] Water: 35-52 parts;

[0032] Preservatives: 0.1-0.5 parts.

[0033] The present invention is further provided that the amino acid is preferably lysine.

[0034] The present invention is further configured such that the pressing sheet is in the shape of an elongated strip, fits against an edge of one side of the wall, and is fixedly connected to the wall base by bolts.

[0035] The present invention is further configured such that the pressing sheet is made of metal material.

[0036] In summary, the beneficial effects of the present invention are:

[0037] Compared with the prior art, the present application enhances the bonding force between the new and old materials by applying the interface agent on the wall base before applying the putty during the construction process, which helps to prevent the separation and falling off of the putty due to different materials after brushing. A mesh cloth is also laid on the wall base, and the rough surface of the mesh cloth increases the attachment points of the putty layer, so that the putty layer can be more firmly attached to the wall. At the same time, the mesh cloth also enhances the integrity of the putty layer, improves its ability to resist peeling and hollowing, and the high tensile strength and flexibility of the mesh cloth make it an ideal choice for preventing wall cracking. When the wall is subjected to temperature changes, humidity changes or structural stress, the mesh cloth can absorb and disperse these stresses, thereby preventing cracks in the putty layer or the wall itself, and improving the quality of the wall; at the same time, the fiber grid can reduce the increase in formaldehyde release channels caused by cracking of the putty layer, thereby slowing down the release rate of formaldehyde to a certain extent. In turn, the release rate of formaldehyde in the putty layer is slowed down, which helps to maintain a low indoor formaldehyde concentration throughout the entire living cycle, thereby protecting the health of residents for a long time.

[0038] The second mesh cloth is laid when the first putty layer is semi-dry, which allows the mesh cloth to better bond with the putty layer to form a stronger overall structure. Subsequent putty construction can make the wall smoother and reduce the bumps and bumps caused by uneven thickness or shrinkage of the putty layer, thereby improving the quality of wall decoration. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0040] This embodiment discloses a green and environmentally friendly indoor wall decoration method, comprising the following steps:

[0041] S1. Repair the wall base: Check the flatness of the wall, clean the dust, oil and other impurities on the wall, and then fill the uneven parts of the wall to ensure that the wall is flat and smooth;

[0042] By repairing the wall base, removing dust, oil and other impurities, and filling uneven areas, the wall becomes flat and smooth, laying a good foundation for subsequent construction and enhancing the flatness and aesthetics of the wall.

[0043] S2. Apply interface agent: Apply a layer of interface agent on the wall to enhance the bonding between the new and old materials and to prevent moisture and cracking;

[0044] By applying the interface agent, the adhesion between the new and old materials is enhanced, which helps prevent the separation and falling off of the wall due to different materials, thereby improving the durability and stability of the wall.

[0045] S3. Apply putty layer: Apply putty evenly on the wall twice, and lay mesh cloth on the wall and the surface of the first putty during the process of applying putty. The second putty should completely cover the mesh cloth on the surface of the first putty. Since the mesh cloth has excellent tensile strength, it can effectively disperse the stress of the putty layer caused by temperature changes, humidity changes or structural deformation. By laying mesh cloth on the wall and the surface of the first putty, when the putty layer is affected by these external factors, the mesh cloth can absorb and disperse these stresses, thereby preventing cracks in the putty layer. Improve the quality of the putty layer.

[0046] After laying the mesh cloth on the surface of the first putty, apply the second coat of putty, which can increase the contact area between the putty layer and the base layer and the mesh cloth. This increased contact area helps to improve the adhesion between the putty layer and the base layer, making the putty layer more firmly attached to the wall.

[0047] And because of the strengthening effect of the mesh cloth, even if the putty layer is subjected to external force or ages after long-term use, it is not easy to fall off the wall. This helps to keep the wall clean and beautiful and extend the service life of the decoration.

[0048] During the process of laying the mesh cloth, the mesh cloth itself has a certain degree of flexibility and elasticity, and can be deformed as the putty layer is applied. This deformation helps to fill the tiny bumps on the wall, making the wall smoother and flatter; as a construction auxiliary material, the laying position and method of the mesh cloth can be adjusted according to the actual situation of the wall. Through delicate construction operations, the mesh cloth can be closely combined with the putty layer, thereby improving the overall flatness of the wall.

[0049] The specific operation steps of S3 are as follows:

[0050] A1. Laying the first mesh cloth: preparing a mesh cloth made of breathable and water-absorbent fiber, cutting the mesh cloth according to the size of the wall, and then pasting the mesh cloth on the wall using an interface agent to obtain the first mesh cloth;

[0051] The crack resistance of the wall is significantly enhanced by laying mesh cloth on the wall. The high tensile strength and flexibility of the mesh cloth can effectively disperse and absorb the stress caused by material shrinkage, temperature changes, etc., thereby preventing or reducing the occurrence of cracks. The mesh cloth is made of breathable and water-absorbent fibers, which helps to improve the air permeability and water absorption of the wall. It can keep the wall ventilated and dry, reduce the growth of moisture and mold, and the mesh cloth is distributed on the wall and is in contact with all positions of the putty layer. When a certain area of ​​the first putty layer dries too fast, the mesh cloth can guide the moisture in other areas of the putty layer to the area that dries too fast, thereby ensuring that the drying speed of each position of the putty layer is close and the putty dries evenly.

[0052] At the same time, the breathable and water-absorbent fiber can increase the drying speed of the first putty layer and improve the efficiency of construction.

[0053] A2. Wire installation: Tie wires perpendicular to the wall on the first mesh cloth. The wires are evenly distributed on the first mesh cloth to prepare for the subsequent installation of color-changing silica gel.

[0054] The iron wire can be used to support the color-changing silicone inserted in the first putty layer, facilitating the stability of the subsequent installation of the color-changing silicone.

[0055] A3. Apply the first putty layer: prepare the putty, and then apply the putty evenly on the wall surface, and make sure that the wall surface is flat and smooth. At the same time, let the putty layer completely cover the first mesh cloth, and make sure that the iron wire is exposed on the surface of the putty layer;

[0056] A4. Install color-changing silica gel: insert the detection block made of color-changing silica gel onto the iron wire and deep into the first putty layer;

[0057] After the first putty layer is applied, the detection block made of color-changing silica gel can be fixed in the first putty layer by iron wire, and the surrounding side of the detection block will contact the first putty layer. The moisture in the first putty layer will cause the color-changing silica gel to change color, so that the construction personnel can observe the moisture content of each position of the first putty layer in real time, and can visually observe the dryness of the putty layer. This method avoids the uncertainty of judging the dryness of the putty layer based on experience or time alone, and improves construction efficiency and accuracy.

[0058] A5. Laying the second mesh cloth: After the first putty layer is dried to a semi-dry state, lay the mesh cloth that matches the wall size on the surface of the first putty layer to obtain the second mesh cloth; laying the second mesh cloth on the surface of the first putty layer when the first putty layer is semi-dry can make the mesh cloth better combined with the putty layer to form a stronger overall structure, and then carry out subsequent putty construction to make the wall smoother.

[0059] At the same time, the first mesh cloth is connected to one side of the second mesh cloth. When the first putty layer is in a semi-dry state, the second mesh cloth is folded toward the surface of the first putty layer so that it can be laid on the surface of the first putty layer; the first mesh cloth and the second mesh cloth are connected on one side, which can enhance the bonding force between the two and make the mesh cloth system more stable. This design helps to form an integral reinforcement layer, improve the overall strength and flatness of the wall, enhance the tensile strength and shear strength of the putty layer, make it more durable, and when the wall is subjected to external forces (such as temperature changes, humidity changes, etc.), the fiber grid can disperse and absorb these stresses and reduce stress concentration in the putty layer. This helps prevent the putty layer from cracking due to excessive stress, and indirectly slows down the release rate of formaldehyde. The cracked putty layer may provide more release channels, and the use of fiber grids helps to reduce the formation of these channels.

[0060] The connected design makes it easier to position and align the second mesh when laying, reducing errors and adjustment time during construction. At the same time, it also avoids the need to find additional fixing points or perform complicated processing when laying the second mesh.

[0061] Since the first mesh cloth is connected to the second mesh cloth and the mesh cloth is made of breathable and water-absorbing fibers, the second mesh cloth exposed to the air can guide the moisture on the first mesh cloth and evaporate it in the air, thereby improving the water absorption efficiency of the first mesh cloth and further increasing the drying speed of the first putty layer, thereby reducing construction time.

[0062] On the basis of the above, the fibers used to make the mesh cloth have a hollow structure. The hollow fiber structure may increase the contact area between the mesh cloth and the putty, thereby improving the adhesion between the putty layer and the wall. This enhanced adhesion helps prevent the putty layer from peeling off or hollowing during subsequent use, and the hollow fiber structure may give the mesh cloth better air permeability, which helps to discharge moisture from the wall and reduce the risk of mildew and shedding. This is of great significance for keeping the indoor environment dry and comfortable, thereby improving the construction quality of the wall.

[0063] When the first putty layer is in a semi-dry state, fold the second mesh cloth and lay it on the surface of the first putty layer to further enhance the wall's crack resistance. Since the mesh cloth has good tensile and ductility, it can effectively disperse the wall stress and further prevent cracking caused by stress concentration.

[0064] A6. Repair and polish the surface of the first putty layer: Determine the dryness of the first putty layer by observing the color of the color-changing silica gel; after the first putty layer is completely dry, cut the test block so that it is flush with the first putty layer, then repair the surface of the first putty layer by applying putty and polish it.

[0065] After cutting the test block to be flush with the first putty layer, the construction workers can repair the surface of the first putty layer with putty to ensure the flatness of the surface of the first putty layer, and then polish the surface of the first putty layer to make it flat and smooth, so that the second putty layer has stronger adhesion to the first putty layer after application.

[0066] In the process of repairing and polishing the first putty layer, care should be taken to avoid damaging the fibers of the second mesh cloth to affect the quality of the mesh cloth.

[0067] A7. Apply the second putty layer: Apply putty evenly on the surface of the first putty layer to obtain the second putty layer, and make the second putty layer completely wrap the second mesh cloth, then wait for it to dry, and complete the application of the putty layer.

[0068] During the application of the putty layer, it is best to ensure that the construction temperature is between 15 degrees Celsius and 35 degrees Celsius, and ensure that the construction environment is well ventilated to avoid the accumulation of harmful gases such as formaldehyde in the room and affect the health of workers.

[0069] S4, polishing the putty layer: repairing and polishing the putty layer applied in S3;

[0070] S5, spray primer: spray anti-alkali sealing primer on the surface of the putty layer polished and smoothed in S4;

[0071] The spraying of anti-alkali sealing primer effectively prevents the discoloration and damage of the wall caused by alkali reversion, further enhancing the durability of the wall

[0072] S6. Apply topcoat: prepare green and environmentally friendly paint for topcoat, and then apply two layers of topcoat on the surface of the putty layer sprayed with primer; apply the second layer of topcoat after the first layer of topcoat is applied and dried, and both layers of topcoat need to be polished and smoothed after application. When applying the topcoat, use a spray gun to spray the large area in the middle of the wall, and stop when the large area in the middle of the wall is 20-30 cm away from the corners of the wall. Use manual brushing on the corners of the wall, and then dry naturally for 1-2 days to complete the interior wall decoration.

[0073] The use of green and environmentally friendly coatings reduces the release of harmful substances, such as formaldehyde, benzene and other volatile organic compounds (VOCs), which is beneficial to improve indoor air quality and protect the health of residents.

[0074] During the multiple sanding and coating processes, harmful substances produced by high-temperature baking are reduced by drying naturally instead of quickly drying.

[0075] Through the above steps, by adopting the mesh cloth which is breathable, water-absorbent and hollow, the drying speed and drying uniformity of the first putty layer can be effectively improved, thereby ensuring that the putty layer will not crack and fall off, slowing down the release of formaldehyde in the putty layer, greatly reducing the indoor formaldehyde content, and allowing users to move in faster; and the detection block inserted on the first putty layer can intuitively observe the moisture content of each position of the first putty layer, thereby avoiding misjudgment of the dryness of the putty due to experience, and effectively avoiding the cracking of the putty layer due to the application of the second putty layer before some positions of the first putty layer are completely dry.

[0076] On the basis of the above, in the A1 step, after the first mesh cloth is laid, a pressing sheet with the same thickness as the first putty layer can be fixed on the edge of one side of the wall base, and the pressing sheet is located between the connection between the first mesh cloth and the second mesh cloth, and the edge of the first mesh cloth is fixed on the wall base, and then putty is coated on the wall base to form a first putty layer, and the first putty layer must completely cover the pressing sheet.

[0077] The pressing sheet is located between the connection of the first mesh cloth and the second mesh cloth, and fixes the edge of the first mesh cloth to the wall base. This design ensures the stable position of the mesh cloth on the wall surface, preventing it from shifting or falling off during the subsequent construction process; at the same time, the existence of the pressing sheet provides a clear boundary and support point for the putty layer, making it easier for construction workers to control the amount and thickness of putty, thereby improving the construction quality.

[0078] The pressing sheet is in the shape of a long strip, fits against the edge of one side of the wall, is fixedly connected to the wall base by bolts, and is made of metal.

[0079] Among them, the metal pressing plate can withstand greater pressure and tension, is not easy to deform, and has a longer service life. At the same time, screws are used to fix the pressing plate to the wall. This fixing method is simple and direct, more efficient and more secure, but care must be taken not to damage the wall base and mesh cloth.

[0080] The putty includes the following components by weight: talc: 45-55 parts; heavy calcium carbonate powder: 18-22 parts; nano titanium dioxide: 4-6 parts; hydroxypropyl methylcellulose: 0.8-1.0 parts; sodium glutamate: 5-6 parts; amino acid: 5-6 parts; water: 35-52 parts; preservative: 0.1-0.5 parts.

[0081] Among them, talcum powder and heavy calcium carbonate powder: these two materials are the main components of putty powder, with good filling and bonding properties. When the talcum powder is in the ratio range of 45 to 55 parts, the content of talcum powder is high enough to ensure that the putty has sufficient hardness and hiding power, while avoiding excessive amounts that cause the putty to be too dry and difficult to construct. Heavy calcium carbonate powder at 18 to 22 parts can balance the cost and performance of the putty, without increasing the cost too much, nor affecting the basic performance of the putty. Through reasonable proportions, the strength and hardness of the putty can be ensured, while reducing the adsorption of harmful substances such as formaldehyde;

[0082] Nano titanium dioxide: Nano titanium dioxide has excellent photocatalytic properties and can decompose harmful gases such as formaldehyde in the air under light conditions, thereby purifying the air; within the ratio range of 4 to 6 parts, the addition of nano titanium dioxide can not only exert its excellent performance, but also will not have a negative impact on other properties of putty.

[0083] Hydroxypropyl methylcellulose: As a thickener and binder in putty, hydroxypropyl methylcellulose can improve the bonding strength and construction performance of putty without affecting its environmental performance. Within the range of 0.8 to 1.0 parts, hydroxypropyl methylcellulose can ensure that the putty has good construction performance while avoiding excessive amounts that make the putty too viscous and difficult to construct.

[0084] Sodium glutamate and amino acids: These ingredients in putty mainly play the role of adjusting pH value and enhancing the performance of putty. Sodium glutamate and amino acids are non-toxic or low-toxic substances, which help reduce the release of harmful substances such as formaldehyde in putty. Within this range, while ensuring the performance of putty, its environmental performance can be improved to meet the demand for environmentally friendly materials in modern buildings.

[0085] Water: As a solvent for putty paste, its dosage needs to be adjusted according to the consistency of the putty and construction requirements. The right amount of water can make the putty paste easier to stir and apply; within this ratio range, the water content can ensure the construction performance of the putty without causing the putty to be too thin or dry.

[0086] Preservatives: Preservatives are mainly used to extend the shelf life of putty and prevent it from getting moldy or deteriorating during use. However, it should be noted that the amount of preservatives added should be controlled within a safe range to avoid harm to human health.

[0087] Through the above formula, the content of formaldehyde and other harmful substances in putty can be effectively reduced, thereby further improving the environmental friendliness of putty.

[0088] The amino acid is preferably lysine. As an amino acid, lysine has certain chemical activity and can interact with other ingredients in putty, thereby enhancing the bonding strength, hardness and durability of the putty. In addition, lysine may also regulate the pH value of the putty, making the putty more stable and reducing problems such as cracking and falling off during construction and use.

[0089] Moreover, lysine is a non-toxic or low-toxic substance. Adding it to putty can reduce the release of harmful substances in putty, such as volatile organic compounds (VOCs) such as formaldehyde. This is of great significance for improving indoor air quality and protecting the health of construction workers and residents. At the same time, lysine has good biodegradability, which is conducive to the environmental protection of putty. It further improves the environmental protection of putty.

[0090] The putty prepared by the above formula can effectively reduce the formaldehyde content in the putty. At the same time, the putty layer prepared by the above construction method, while ensuring that the putty layer is free of cracks and slowing down the formaldehyde release rate in the putty layer, can effectively ensure that the indoor formaldehyde concentration is stable and low due to the low formaldehyde content in the putty layer. Combined with daily ventilation, it can ensure that the indoor formaldehyde concentration has been reduced to a safe range before moving in, so that the indoor formaldehyde concentration can be maintained at a low level throughout the entire living period, thereby protecting the health of the residents for a long time.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A green and environmentally friendly indoor wall decoration method, characterized in that: The following steps are involved: S1. Repair the wall base: Check the flatness of the wall, clean the dust, oil and other impurities on the wall, and then fill the uneven parts of the wall to ensure that the wall is flat and smooth; S2. Apply interface agent: Apply a layer of interface agent on the wall to enhance the bonding between the new and old materials and to prevent moisture and cracking; S3, applying a putty layer: applying putty evenly on the wall twice, and laying mesh cloth on the wall and the surface of the first applied putty during the process of applying putty, and the second applied putty should completely cover the mesh cloth on the surface of the first putty; S4, polishing the putty layer: repairing and polishing the putty layer applied in S3; S5, spray primer: spray anti-alkali sealing primer on the surface of the putty layer polished and smoothed in S4; S6. Apply topcoat: prepare green and environmentally friendly paint for topcoat, and then apply two layers of topcoat on the surface of the putty layer sprayed with primer; apply the second layer of topcoat after the first layer of topcoat is applied and dried, and both layers of topcoat need to be polished and smoothed after application. When applying the topcoat, use a spray gun to spray the large area in the middle of the wall, and stop when the large area in the middle of the wall is 20-30 cm away from the corners of the wall. Use manual brushing on the corners of the wall, and then dry naturally for 1-2 days to complete the interior wall decoration.

2. The green and environmentally friendly indoor wall decoration method according to claim 1 is characterized in that: The specific steps of S3 are as follows: A1. Laying the first mesh cloth: preparing a mesh cloth made of breathable and water-absorbent fiber, cutting the mesh cloth according to the size of the wall, and then pasting the mesh cloth on the wall using an interface agent to obtain the first mesh cloth; A2. Wire installation: Tie wires perpendicular to the wall on the first mesh cloth. The wires are evenly distributed on the first mesh cloth to prepare for the subsequent installation of color-changing silica gel. A3. Apply the first putty layer: prepare the putty, and then apply the putty evenly on the wall surface, and make sure that the wall surface is flat and smooth. At the same time, let the putty layer completely cover the first mesh cloth, and make sure that the iron wire is exposed on the surface of the putty layer; A4. Install color-changing silica gel: insert the detection block made of color-changing silica gel onto the iron wire and deep into the first putty layer; A5. Laying the second mesh cloth: After the first putty layer is dried to a semi-dry state, a mesh cloth matching the size of the wall is laid on the surface of the first putty layer to obtain the second mesh cloth; A6. Repair and polish the surface of the first putty layer: judge the dryness of the first putty layer by observing the color of the color-changing silica gel; After the first putty layer is completely dry, the test block is cut so that it is flush with the first putty layer, and then the surface of the first putty layer is repaired by applying putty and polishing; A7. Apply the second putty layer: Apply putty evenly on the surface of the first putty layer to obtain the second putty layer, and make the second putty layer completely wrap the second mesh cloth, then wait for it to dry, and complete the application of the putty layer.

3. The green and environmentally friendly indoor wall decoration method according to claim 1 is characterized in that: The first mesh cloth is connected to one side of the second mesh cloth. When the first putty layer is in a semi-dry state, the second mesh cloth is folded toward the surface of the first putty layer so as to be laid on the surface of the first putty layer.

4. The green and environmentally friendly indoor wall decoration method according to claim 3 is characterized in that: In the A1 step, after the first mesh cloth is laid, a pressing sheet with the same thickness as the first putty layer can be fixed on the edge of one side of the wall base, and the pressing sheet is located between the connection between the first mesh cloth and the second mesh cloth, and the edge of the first mesh cloth is fixed on the wall base, and then putty is coated on the wall base to form a first putty layer, and the first putty layer must completely cover the pressing sheet.

5. The green and environmentally friendly indoor wall decoration method according to any one of claims 1 to 4, characterized in that: The mesh cloth is made of air-permeable and water-absorbent fibers, and the fibers are hollow in structure.

6. The green and environmentally friendly indoor wall decoration method according to claim 5 is characterized in that: The mesh cloth is a hollow polyester fiber mesh cloth.

7. The green and environmentally friendly indoor wall decoration method according to claim 2 is characterized in that: The putty comprises the following mass components: Talc: 45-55 parts; Heavy calcium carbonate powder: 18-22 parts; Nano titanium dioxide: 4-6 parts; Hydroxypropyl methylcellulose: 0.8-1.0 part; Sodium glutamate: 5-6 parts; Amino acids: 5-6 parts; Water: 35-52 parts; Preservatives: 0.1-0.5 parts.

8. The green and environmentally friendly indoor wall decoration method according to claim 7 is characterized in that: The amino acid is preferably lysine.

9. The green and environmentally friendly indoor wall decoration method according to claim 4 is characterized in that: The pressing sheet is in the shape of a long strip, fits against an edge of one side of the wall, and is fixedly connected to the wall base by bolts.

10. The green and environmentally friendly indoor wall decoration method according to claim 9, characterized in that: The pressing sheet is made of metal material.