WO2021035778A1

WO2021035778A1 - Wall surface renovation method

Info

Publication number: WO2021035778A1
Application number: PCT/CN2019/104227
Authority: WO
Inventors: 马志勇
Original assignee: 苏州红泥新材料科技有限公司
Priority date: 2019-08-30
Filing date: 2019-09-03
Publication date: 2021-03-04
Also published as: CN110616910A

Abstract

A wall surface renovation method, comprising the following steps: determining a renovation area, and treating the wall surface of the renovation area until a base plane is reached; coating an impregnation curing agent on the renovation area; covering the renovation area by using a fiber texture network sandwich, which contains a three-dimensional intersecting network structure formed by fibers; pressure rolling the wall surface such that the impregnation curing agent impregnates the fibers and penetrates into network pores in the three-dimensional intersecting structure so that the fiber texture network sandwich is wetly attached to the surface of putty, and curing the impregnation curing agent and the putty to form a renovated wall surface. The described renovation method features short construction time, and little dust is produced during construction.

Description

A method for wall renovation

This application requests the priority of the Chinese patent application filed on August 30 , 2019 with the application number 2019 (title of invention: a method for wall renovation).

Technical field

The invention relates to an old wall renovation technology, in particular to a fast and environmentally friendly wall renovation method.

Background technique

Wall coating refers to the decoration and protection of building walls, making the building walls beautiful and tidy, while also protecting the building walls and prolonging their service life. In specific technical fields, the development of various binder film forming technologies has made great progress in the performance of coatings, especially the development of emulsion formulation technology is particularly important. Paint wall system is currently the most widely used wall system, accounting for almost 80% of the entire wall market. The paint wall system is composed of putty leveling layer and paint. Due to the low strength of the putty leveling layer in this system, its long-term performance stability is poor, causing cracks, swelling, peeling, and peeling of the paint wall, which seriously affects normal use. Moreover, after long-term use of the decorative paint on the surface, there are also phenomena such as chalking, chromatic aberration, and pollution, which seriously affect the appearance of the painted wall. Therefore, the walls need to be refurbished at regular intervals.

There are two ways to refurbish the existing painted walls. 1) If the putty layer has been used for a short time, it is not necessary to remove the putty layer, but the original wall surface needs to be polished, then the primer is applied, and the surface is finally coated. Lacquer; in this case, as the internal putty ages, it needs to be refurbished again soon. 2) In most cases, it is necessary to remove the damaged old putty layer and re-scrape the new putty layer. During the process of scraping the putty layer, due to the obvious scratches on the surface of the putty, it needs to be polished and smoothed, and then coated Coatings; such as Nippon Refresh, which is active in the market, uses this process.

However, the existing wall renovation process has a long construction period, a lot of construction waste, a lot of dust, noise, etc. during the construction process, especially when polishing the putty layer or polishing the original wall surface, a large amount of dust will be generated. These fine dust particles Very small, it is easy to be adsorbed on the surface of other objects under the action of static electricity and surface tension, but if it is not polished and leveled, it will seriously affect the decoration of the refurbished wall surface, and seriously affect the adhesion between the wall and the back coating. Conclusive.

At the same time, the people in the house must be evacuated when the wall is renovated, and the items are covered, resulting in a poor customer experience of the old wall renovation. It is precisely because of these problems that even if the wall paint cracks or peels off, as long as it does not seriously affect the use, many users would rather not renovate. Moreover, the painted walls after renovation still have low surface strength, which will cause scratches and cracks.

Based on the above current situation, the field of old paint wall renovation lacks a green and environmentally friendly renovation method that is convenient and fast, clean and dust-free, less construction waste, and no noise in construction.

Summary of the invention

In order to solve the above technical problems, the purpose of the present invention is to provide a wall renovation method, especially a wall renovation method with old paint on the surface, so as to reduce construction waste and shorten the construction period. The construction process is noise-free, clean and dust-free. And green.

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A wall renovation method, especially a wall renovation method with old paint on the surface, includes:

Determine the refurbished area, in the refurbished area, if there is a drum, remove the protrusions from the drummed wall area to the datum plane of the wall; and/or if there is a defect, fill in the missing wall area Putty, to the datum plane of the wall;

Apply impregnation curing agent in the refurbished area;

Cover the refurbished area with a fiber texture network sandwich core, the fiber texture network sandwich core containing a three-dimensional intersecting network structure formed by fibers;

Roll the wall surface to make the impregnating curing agent impregnate the fibers and infiltrate into the mesh of the three-dimensional interpenetrating network structure, so that the fiber texture network sandwich core is wet-adhered to the surface of the putty, and the infiltration curing fiber texture network sandwich composite wall Surface, curing the impregnating curing agent and putty to form a refurbished wall surface.

Wherein, the "to the datum plane of the wall surface" does not need to be smooth or clean, and does not need to be polished. It only needs to have no obvious protrusions or defects, or it may be flush with the datum plane of the wall by naked eye observation.

More preferably, the "to the reference plane of the wall surface" allows a height difference within 3mm, preferably a height difference within 2mm, more preferably a height difference of 10nm-1.5mm, and more preferably a height difference of 50nm. -1mm height difference, more preferably 100nm-1mm height difference, more preferably 1μm-1mm height difference, more preferably 50μm-0.5mm height difference.

Among them, if the putty is filled in batches, the impregnation curing agent can be applied to the refurbished area before, during or after the putty is dried.

Wherein, the wall surface with old paint on the surface may be a wall surface coated with a putty layer, a surface coating, or a wall surface coated with a putty layer only, or a wall coated with a surface coating only Surface, or the coated wall surface left by wallpaper or wall covering after the wallpaper or wall covering is removed.

Among them, more preferably, the old paint has one of bulging, defects (including scratches, grooves, pits, etc.), cracking, discoloration, chalking, efflorescence, peeling, mildew, and pollution on the wall surface. Kind or several situations.

However, the old paint on the surface of the wall can also be kept in the state when it was applied and dried, for example, no bulging, defects (including scratches, grooves, pits, etc.), cracking, discoloration, chalking, etc. One or more of efflorescence, peeling, mold, and pollution.

Wherein, the existence time of the old paint on the wall is not limited, as long as it exists on the wall before the renovation method described in this application is operated.

In a more preferred embodiment, the age of the old paint on the wall surface is preferably at least 1 year, for example, more preferably at least 2 years, more preferably at least 5 years, more preferably at least 10 years, etc.

Wherein, the wall surface may also be free of any old paint, or may be an exposed wall surface, such as a brick wall.

Wherein, the refurbished area can be all original wall surfaces, part of original wall surfaces, or can be limited to bulging, defects (including scratches, grooves, pits, etc.), cracking, discoloration, chalking, efflorescence , Flaking, moldy, and contaminated areas. For example, the defect may be a groove between bricks in a brick wall.

In a more preferred embodiment, a wall renovation method includes:

Apply impregnation curing agent to the dry part of the entire wall surface;

Cover the dry part of the entire wall with a fiber texture network sandwich.

Preferably, the method for refurbishing a wall further includes:

On the infiltrated and cured fiber texture network sandwich composite wall surface, apply decorative paint to obtain a paint renovation wall surface.

Preferably, the method for refurbishing a wall further includes:

On the impregnated and cured fiber texture network sandwich composite wall surface, the impregnation curing agent is applied, and then the decorative fiber texture network sandwich is pasted on the impregnation curing agent, and pressed and pasted smoothly to make the impregnation curing agent Infiltrate the decorative fiber texture network sandwich core, and solidify to obtain a refurbished wall surface with the pattern and/or texture of the decorative fiber texture network sandwich core, wherein the decorative fiber texture network sandwich core contains three-dimensional interaction formed by fibers. Through the network structure.

More preferably, on the refurbished wall surface with the pattern and/or texture of the decorative fiber texture network sandwich, the decorative paint is applied to obtain the refurbished wall surface.

Preferably, the impregnation curing agent includes an organic curing agent, an inorganic curing agent, or an organic-inorganic composite curing agent.

Preferably, the particle size of the impregnation curing agent is in the nanometer range, preferably 5-500 nm, more preferably 50-300 nm, and more preferably 20-80 nm.

Preferably, the impregnation curing agent adopts an aqueous curing agent.

Preferably, the impregnation curing agent is selected from curing agents that have infiltration, penetration and curing enhancement effects on putty and other substrates.

Preferably, the impregnation curing agent is selected from curing agents that have infiltration, penetration and curing enhancement effects on the fiber texture network sandwich core used for leveling.

Preferably, the impregnation curing agent is selected from curing agents that have infiltration, penetration and curing enhancement effects on the decorative fiber texture network sandwich.

Preferably, the impregnation curing agent has other compound functions such as waterproof, mildew proof, flame retardant, and alkali resistance.

Preferably, the three-dimensional interpenetrating network structure includes fibers and three-dimensional intersecting meshes formed by gaps between the fibers.

More preferably, the arrangement of the fibers is a three-dimensional distribution, including at least horizontal, vertical, and oblique fibers.

Further, in at least part of the fibers, each fiber has at least two or three of the horizontal part, the vertical part, and the oblique direction part at the same time; wherein, any one of the horizontal part, the vertical part, and the oblique direction part of the fiber Kind or several kinds of intersecting each other, and/or any one or more of the horizontal part, vertical part, and oblique direction part of the fiber and another one or more of the horizontal part, vertical part, and oblique direction part of the fiber Any one or several of them cross each other.

More preferably, the meshes include at least horizontal, vertical, and oblique meshes, wherein one or more of the horizontal, vertical, and oblique meshes is the same as the other one or more horizontal and vertical meshes. One or more of the meshes in the oblique direction are connected to each other.

In the above content of the present invention, the "inclined" refers to a non-zero angle with the horizontal and vertical directions. The "horizontal" is in the horizontal plane, and the "vertical" is in the vertical plane. That is, the "horizontal", "vertical", and "inclined" do not belong to the same plane.

In the above content of the present invention, the "horizontal parts" may be in the same horizontal plane or different horizontal planes; the "vertical parts" may be in the same vertical plane or different vertical planes; the "inclination" The direction part" may be in the same inclined plane or in different inclined planes.

In a more preferred embodiment of the present invention, the fibers are arranged in multiple layers, the fibers of the same layer form a first mesh, and the fibers of each layer at least partially cross each other to form a second mesh, at least part of the first mesh The holes and the second mesh are intersected with each other to form a three-dimensional interpenetrating network structure.

In a more preferred embodiment of the present invention, each layer of fibers may be a two-dimensional network structure formed by interlacing warp and weft threads, and/or a two-dimensional network structure formed by bending the fibers.

More preferably, at least part of the fibers are interspersed with at least two layers of fibers.

More preferably, the fibers of each layer are arranged alternately with each other to form meshes in different directions. For example, the fiber intersections of each layer or at least part of the layers are located at the meshes of other layers, and/or the fibers of each layer or at least part of the layers have different fiber directions from other layers.

In the above content of the present invention, the connection points between the fibers of the fiber texture network sandwich and the decorative fiber texture network sandwich adopt one or more of physical connection and chemical bonding, and the physical connection includes One or more of hot melting, needle punching, spunlacing, and hot rolling, and preferably hot melting.

In the above content of the present invention, the number of connection points of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is preferably 1%-100%.

In the above content of the present invention, the number of connection points refers to the percentage of the number of connection points between fibers to the number of fiber intersections.

In the above content of the present invention, the fiber texture network sandwich core and the decorative fiber texture network sandwich core can be made of materials such as metal, plastic, rubber, fiber, etc., and are preferably made of fiber materials, and the fibers can be inorganic fibers. , Any one or more of organic fibers, and can be any one or more of artificial synthetic fibers, natural fibers (including natural fiber modification), regenerated fibers obtained after natural fiber processing, metal fibers, and alloy fibers Kind.

In a more preferred embodiment, the fiber may be selected from: polyamide (nylon 6, nylon 66, etc.), polyimide (such as P84 fiber), polypropylene, polytetrafluoroethylene, polyester (such as PET, PBT, etc.), aramid (such as aramid 1414, aramid 1313, etc., specifically such as DuPont’s Kevlar, Nomex, Teijin’s Twaron, Technora, Taihe New Materials Co.’s Taparan, etc.), polyphenylene sulfide and other synthetic fibers Any one or several. However, it may also be glass fiber or the like.

Wherein, the fiber can also be modified by dipping and other modification processes to increase rigidity and improve resistance to deformation.

Wherein, the fiber cross-sectional shape of the fiber texture network sandwich core and the decorative fiber texture network sandwich core may be one or more regular and/or irregular shapes, such as at least a circle, an ellipse, and a semicircle. , Polygon (such as triangle, quadrilateral, pentagon, hexagon), five-pointed star, cashew shape, corrugated shape, dumbbell shape, etc., one or more of the shapes, and preferably one of a circle and an ellipse Or several.

In the above content of the present invention, the fiber texture network sandwich and the decorative fiber texture network sandwich are preferably one of textiles (including non-woven textile materials, non-woven technology), casting, molding, 3D printing, etc. One or more kinds of acquisition. Particularly preferably, it is obtained through non-woven fabric technology and/or non-woven textile material technology, such as electrospinning technology. In a more preferred embodiment, the manufacturing method of the fiber texture network sandwich core and the decorative fiber texture network sandwich core includes: melt spinning, spraying and stacking fiber filaments, and then hot pressing the fibers in and between the layers Connect separately.

In the above content of the present invention, the diameter of the fiber is preferably 50nm-5000μm, preferably 500nm-1000μm, more preferably 1μm-100μm, more preferably 1μm-50μm, more preferably 5μm-50μm, more preferably 5μm-40μm .

In the above content of the present invention, the thickness of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is 0.01mm-10mm, more preferably 0.05mm-5mm, more preferably 0.1-1mm, more preferably 0.1 -0.5mm, more preferably 0.2-0.4mm, such as 0.25mm, 0.28mm, 0.3mm, 0.33mm, 0.35mm, 0.37mm.

In the above content of the present invention, the mesh shape of the fiber texture network sandwich core and the decorative fiber texture network sandwich core has no special requirements, and can be set according to texture requirements. Among them, the meshes can be evenly distributed, or the meshes in different regions have different distribution densities.

In the above content of the present invention, the pore size of the mesh of the fiber texture network sandwich and the decorative fiber texture network sandwich is preferably 50nm-10mm, more preferably 100nm-5mm, more preferably 500nm-3mm, more preferably It is 5 μm to 2 mm, more preferably 50 μm to 1 mm, and more preferably 0.1 mm to 1 mm.

In the above content of the present invention, the density of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is preferably 1-300g/m ² , more preferably 3-250g/m ² , more preferably 5-200g / m ^2, more preferably 10 to 150 g / m ^2, more preferably 20-100g / m ^2, more preferably 20-50g / m ^2.

Preferably, the fibers in the fiber texture network sandwich core and the decorative fiber texture network sandwich core are colored fibers, for example, they are colored before forming a three-dimensional interpenetrating network structure.

In a preferred embodiment, the surface of the fiber texture network sandwich is flattened, but the surface openings communicating with the internal mesh remain; it can be flattened on one side or flattened on both sides.

In the above content of the present invention, the fiber texture network sandwich core and the decorative fiber texture network sandwich core have been or have been surface-finished, or have not been surface-finished, and the surface finishing includes single-sided surface finishing or double-sided surface finishing. Surface finishing;

Wherein, the surface finishing preferably includes, but is not limited to, any one or more of the following a)-f):

a) The surface is coated with a material that changes the properties of the fiber, preferably with a material with a different water absorption rate. More preferably, the properties (such as water absorption rate) gradually change from one end of the surface finishing part to the other end, more preferably, The performance (such as water absorption) gradually changes from one end of the fiber texture network sandwich to the other end;

b) Dyeing to make the surface of the fiber texture network sandwich core colored, wherein the color is preferably a single color or multiple colors, and the multiple colors are preferably gradient colors;

c) Paste the film, but keep the surface opening connected with the internal mesh;

d) Molding, so that the surface of the fiber texture network sandwich core has an indentation pattern; more preferably, embossing, embossing, and embossing are performed;

e) Die cutting, so that the fiber texture network sandwich has a pattern that penetrates;

f) Modification by processes such as dipping to improve fiber rigidity and resistance to deformation.

In a preferred embodiment, the decorative fiber texture network sandwich core includes a fiber texture network sandwich body, and the surface of the fiber texture network sandwich body has an embossing pattern, that is, the fiber texture network sandwich body passes through The embossing process forms an embossing pattern on the surface of the fiber texture network sandwich body.

More preferably, the embossing pattern is convex and/or concave in the fiber texture network sandwich body.

The embossing pattern can increase the three-dimensional effect of the fiber texture network sandwich body.

More preferably, the embossing treatment is selected from one or more of roll pressing and mould pressing.

More preferably, the fiber texture network sandwich body is the same as the fiber texture network sandwich core.

In a preferred embodiment, the decorative fiber texture network sandwich core includes a fiber texture network sandwich body, and the surface of the fiber texture network sandwich body has a printed pattern, that is, the fiber texture network sandwich body is printed Processing, forming a printed pattern on the surface of the fiber texture network sandwich body.

The printed pattern can enrich the pattern and color of the fiber texture network sandwich body.

More preferably, the printing process is selected from: offset printing, silk screen printing, gravure printing, embossing, inkjet printing, transfer printing, hot stamping, stencil printing, offset printing, flexographic printing, digital printing, flocking, thermal transfer One or more of India.

Wherein, the gravure printing refers to: using gravure to transfer the ink to the surface of the fiber texture network sandwich core.

Wherein, the embossing refers to: using a relief plate to transfer the ink to the surface of the fiber texture network sandwich core.

More preferably, in the printing process, the ink used may be one or more of lithographic printing inks, gravure printing inks, stencil printing inks, magnetic inks, fluorescent inks, and UV curing inks.

In a preferred embodiment, the decorative fiber texture network sandwich core includes a fiber texture network sandwich body, the surface of the fiber texture network sandwich body is provided with embossing patterns and printing patterns, and the printing patterns are consistent with the The embossing patterns are overlapped, partially overlapped or not overlapped.

Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

1) The construction time is shortened, and the whole construction process can be wet operation, that is, there is no need to wait for the repaired putty to dry before proceeding to the next process.

2) The construction dust is reduced. Except for removing a few protrusions, no dust is generated in the rest of the process.

3) Use impregnating curing agent to paste the fiber texture network sandwich on the cracked, shoveled, defect repaired putty, chalking, color difference, and pollution complex wall surface, which can achieve uniform wall color and wall surface The effect of fiber reinforcement can repair the cracks of the old wall, the powdered layer is strengthened, the wet putty layer and the fiber texture network sandwich are firmly combined, and during the curing process, the water can smoothly volatilize from the wall.

4) Since the two construction processes of putty drying and polishing putty are reduced, time is saved, dust is reduced, and the noise generated by polishing is also eliminated.

5) The impregnation curing agent adopts a green environmental protection, formaldehyde-free donor water-based curing agent, which can be renovated on the same day and move in on the same day.

Description of the drawings

Fig. 1 is a schematic flow chart of a method for refurbishing a wall in the first embodiment;

Figure 2 is a schematic diagram of the point-like connection points of the fiber texture network sandwich;

Figure 3 is a schematic diagram of the partial cross-sectional structure of the three-dimensional interpenetrating network structure of the fiber texture network sandwich;

4A-4B are perspective photos of the fiber texture network sandwich core of the present invention;

Fig. 5 is a schematic flow chart of a method for refurbishing a wall in the second embodiment;

FIG. 6 is a schematic flowchart of a method for refurbishing a wall in the third embodiment;

Fig. 7 is an example diagram of the effect of wall renovation in the third embodiment;

FIG. 8 is a schematic flowchart of a method for refurbishing a wall in the fourth embodiment;

Figure 9 is a diagram showing an example of the effect of wall renovation in the fourth embodiment;

Fig. 10 is a schematic flowchart of a method for refurbishing a wall in the fifth embodiment.

detailed description

The present invention provides a wall renovation method. In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not used to limit the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

Example one:

1, a method for refurbishing a wall surface according to the present invention, which has protrusions and defects on the surface of the wall surface, includes:

Step S1: Remove the protrusions from the raised wall to the datum plane of the wall;

Step S2: Fill the defective wall with putty to the datum plane of the wall. No need to wait for the putty to dry, no need to scrape or sand the putty, and no need to deliberately remove the old paint in areas such as chalking and pollution;

Step S3: Apply an impregnation curing agent to the dry part of the entire wall surface;

Step S4: Cover the entire wall with a fiber texture network sandwich, which contains a three-dimensional interpenetrating network structure formed by fibers; roll the wall surface so that the impregnation curing agent impregnates the fibers and penetrates into the three-dimensional In the mesh of the interpenetrating network structure, the fiber texture network sandwich core is wet-attached to the surface of the putty to obtain a uniformly colored and overall flat surface infiltrating and solidified fiber texture network sandwich composite wall surface, which is cured to form a refurbished wall surface.

In an embodiment, the defective wall also includes a brick wall without a putty layer and a paint layer. The above step S2 may be: filling the surface of the brick wall with hook grooves with putty to the reference plane of the wall, without When the putty is dry, there is no need to scrape or sand the putty, and there is no need to deliberately remove the old paint in areas such as chalking and pollution.

The aforementioned fiber texture network sandwich includes fibers and three-dimensional intersecting meshes formed by the gaps between the fibers. 2, in the same plane, the transverse fibers 605 and the longitudinal fibers 604 and the diagonal fibers 603 cross each other, and the intersecting fibers surround a mesh 602. The intersections between the fibers are at least partially connected together to form a connection point 601. The connection point 601 can be chemically bonded or physically connected, and the physical connection can be hot melt, needle punching, spunlacing, hot rolling, or the like. If the entire surface is only required to be flat, a point-type hot-melt method can be accepted for an overall flat surface.

The percentage of the number of fiber connection points to the number of fiber cross points can be 1%-100%, that is, all the cross points can form the connection points, but only part of the cross points can also form the connection points. As shown in Figure 2, the intersection between the transverse fibers indicated by mark 605 and the longitudinal fibers indicated by mark 604 does not form a connection point, but the intersection between the transverse fibers indicated by mark 605 and the diagonal fibers indicated by mark 603 The points and the intersections between the longitudinal fibers indicated by the mark 604 and the diagonal fibers indicated by the mark 603 all form a connecting point 601.

It should be understood that the fiber texture network sandwich core of the present invention is a three-dimensional structure, that is, the fibers are not all arranged in the same plane. In fact, there are fibers in horizontal, vertical, and inclined directions, horizontal, vertical, and inclined. Directional fibers cross each other and form at least part of the connection points. In addition, due to the relatively large length of fibers, each fiber may have multiple horizontal parts, vertical parts, and inclined direction parts, and multiple horizontal parts, multiple vertical parts, or multiple inclined direction parts may exist. Exist or may not exist in the same horizontal plane, vertical plane or inclined plane.

As shown in FIG. 3, the transverse fibers 31 in the upper horizontal plane and the transverse fibers 32 in the lower horizontal plane form a transverse mesh 22, and the vertical fibers 33 in the vertical plane form a longitudinal mesh 21, and a transverse mesh 22 is formed between the transverse fibers 31 in the upper horizontal plane and the transverse fibers 32 in the lower horizontal plane. It communicates with the longitudinal mesh 21. Similarly, between the transverse fiber 31 and the oblique direction fiber, and between the vertical fiber 33 and the oblique direction fiber, the oblique direction mesh 23 is formed respectively. FIG. 3 shows the case where the two oblique direction meshes 23 are connected, but the oblique direction meshes 23 are connected. The directional mesh 23 may also be in communication with the horizontal mesh 22 and/or the longitudinal mesh 21. Moreover, the transverse fibers 31 in the upper horizontal plane and the transverse fibers 32 in the lower horizontal plane may be two horizontal parts from the same fiber, or may be two fibers.

4A-4B, the fiber diameter of the fiber texture network sandwich of the present invention is preferably 50nm-5000μm, preferably 500nm-1000μm, more preferably 1μm-100μm, more preferably 1μm-50μm, more preferably 5μm-50μm, More preferably, it is 5 μm-40 μm. The pore size of the mesh of the fiber texture network sandwich is preferably 50nm-10mm, more preferably 100nm-5mm, more preferably 500nm-3mm, more preferably 5μm-2mm, more preferably 50μm-1mm, more preferably 0.1mm- 1mm. The density of the fiber texture network sandwich is preferably 1-300g/m ² , more preferably 3-250g/m ² , more preferably 5-200g/m ² , more preferably 10-150g/m ² , more preferably 20 -100g/m ² , more preferably 20-50g/m ² . The thickness of the fiber texture network sandwich core is preferably 0.01mm-10mm, more preferably 0.05mm-5mm, more preferably 0.1-1mm, more preferably 0.1-0.5mm, more preferably 0.2-0.4mm, such as 0.25mm, 0.28 mm, 0.3mm, 0.33mm, 0.35mm, 0.37mm, etc.

In the present invention, the fiber texture network sandwich can be made of metal, plastic, rubber, fiber and other materials, and is preferably made of fiber material. The fiber can be any one or more of inorganic fiber and organic fiber. It can be any one or more of artificial synthetic fiber, natural fiber (including natural fiber modification), regenerated fiber obtained after natural fiber processing, metal fiber, and alloy fiber.

In a more preferred embodiment, the fiber may be selected from: polyamide (nylon 6, nylon 66, etc.), polyimide (such as P84 fiber), polypropylene, polytetrafluoroethylene, polyester (such as PET, PBT, etc.), aramid (such as aramid 1414, aramid 1313, etc., specifically such as DuPont’s Kevlar, Nomex, Teijin’s Twaron, Technora, Taihe New Materials Co.’s Taparan, etc.), polyphenylene sulfide and other synthetic fibers Any one or several, but it can also be glass fiber.

Wherein, the fiber cross-sectional shape of the fiber texture network sandwich can be one or more regular and/or irregular shapes, such as at least a circle, an ellipse, a semicircle, and a polygon (such as a triangle, a quadrilateral, a pentagon). Shape, hexagon), five-pointed star, cashew shape, corrugated shape, dumbbell shape, etc., and preferably one or more of circular shape and oval shape.

In the present invention, the fiber texture network sandwich is preferably obtained by one or more of methods such as weaving (including non-woven textile materials and non-woven technology), casting, molding, and 3D printing. Particularly preferably, it is obtained through non-woven fabric technology and/or non-woven textile material technology, such as electrospinning technology. In a more preferred embodiment, the method for making the fiber texture network sandwich core includes: melt spinning, spraying and stacking fiber filaments, and then hot pressing to connect the fibers in and between the layers respectively.

Embodiment two:

Referring to Fig. 5, according to a method for refurbishing a wall according to the present invention, chalking occurs on the surface of the wall. In this embodiment, there is no need to remove the chalked area, and there is no need to clean the wall. The method includes:

Step A1: Apply impregnation curing agent on the dry part of the entire wall surface;

Step A2: Cover the entire wall with a fiber texture network sandwich, which contains a three-dimensional interpenetrating network structure formed by fibers; roll the wall surface to make the impregnation curing agent impregnate the fibers and penetrate into the three-dimensional In the mesh of the interpenetrating network structure, the fiber texture network sandwich core is wet-attached to the surface of the putty to obtain a uniform color and overall flat surface infiltrated and cured fiber texture network sandwich composite wall surface, which is cured to form a refurbished wall surface;

Step A3: Apply decorative paint on a composite wall surface with a uniform color and a smooth surface of the impregnated solidified fiber texture network sandwich composite wall to obtain a refurbished wall surface.

After the powdered old paint is mixed with the impregnating curing agent, it continues to exist in the new wall formed, but the experiment proves that it will not affect the durability, firmness, decoration and other properties of the new coating on the wall surface .

Example three:

Referring to Fig. 6, a method for renovating a wall with a bare brick wall according to the present invention includes:

Step B1: Fill the grooves between the bricks with putty to the datum plane of the wall. There is no need to wait for the putty to dry, and there is no need to scrape or sand the putty;

Step B2: Apply impregnation curing agent on the dry part of the entire wall surface;

Step B3: Cover the entire wall surface with a fiber texture network sandwich, which contains a three-dimensional interpenetrating network structure formed by fibers; roll the wall surface to make the impregnation curing agent infiltrate the fibers and penetrate into the three-dimensional interaction Through the mesh of the network structure, the fiber texture network sandwich core is wet-attached to the surface of the putty to obtain a uniform color and overall flat surface infiltrated and cured fiber texture network sandwich composite wall surface, which is cured to form a refurbished wall surface;

Step B4: Coat the impregnation curing agent on the impregnated and solidified fiber texture network sandwich composite wall with uniform color and flat surface, and then paste the fiber texture network sandwich with embossed pattern on the impregnation The curing agent is pressed and pasted smoothly, so that the impregnating curing agent is impregnated with the fiber texture network sandwich core with embossed patterns, and cured to obtain a textured refurbished wall surface.

In a preferred embodiment, after step B4, it may further include:

Step B5: Apply decorative paint on the refurbished wall with texture to obtain the refurbished wall with paint.

The above-mentioned fiber texture network sandwich with embossed patterns is one of the decorative fiber texture network sandwiches, that is, the fiber texture network sandwich is subjected to embossing treatments such as rolling and molding, and the fiber texture network sandwich The surface forms a convex and/or concave three-dimensional embossed pattern. The embossing pattern can increase the three-dimensional effect of the fiber texture network sandwich, so that the refurbished wall has a rich texture pattern. Refer to the example diagram of the refurbished wall surface shown in FIG. 7.

Embodiment four:

Referring to Fig. 8, a wall renovation method according to the present invention includes:

Step C1: Remove the protrusions from the raised wall to the datum plane of the wall;

Step C2: Fill the defective wall with putty to the datum plane of the wall. There is no need to wait for the putty to dry, no need to scrape or sand the putty, and no need to deliberately remove the old paint in areas such as chalking and pollution;

Step C3: Apply impregnation curing agent on the dry part of the entire wall surface;

Step C4: Cover the entire wall surface with a fiber texture network sandwich core, which contains a three-dimensional interpenetrating network structure formed by fibers; roll the wall surface to make the impregnation curing agent impregnate the fibers and penetrate into the three-dimensional interaction Through the mesh of the network structure, the fiber texture network sandwich core is wet-attached to the surface of the putty to obtain a uniform color and overall flat surface infiltrated and cured fiber texture network sandwich composite wall surface, which is cured to form a refurbished wall surface;

Step C5: Coat the impregnation curing agent on the impregnated and solidified fiber texture network sandwich composite wall surface with uniform color and flat surface, and then cover the fiber texture network sandwich with printed patterns on the impregnation and curing And press and paste it smoothly, so that the impregnating curing agent is impregnated with the fiber texture network sandwich core with printed patterns, and solidified to obtain a refurbished wall surface with a variety of colors.

In a preferred embodiment, after step C5, it may further include:

Step C6: Apply decorative paint on the refurbished wall with patterns and colors to obtain the refurbished wall with paint.

The fiber texture network sandwich with printed patterns is one of the decorative fiber texture network sandwiches, that is, the fiber texture network sandwich is printed to form a printed pattern on the surface of the fiber texture network sandwich. Wherein, the printing process includes one of offset printing, silk printing, gravure printing, embossing, inkjet printing, transfer printing, hot stamping, stencil printing, offset printing, flexographic printing, digital printing, flocking, and thermal transfer printing. Kind or several kinds.

The printed pattern is preferably a colorful pattern with vivid colors, so as to be easily observed from a distance. The printed pattern can enrich the color and pattern of the fiber texture network sandwich, so that the refurbished wall has a bright color and pattern effect. Refer to the example diagram of the refurbished wall shown in FIG. 9.

Embodiment five:

10, a wall renovation method according to the present invention includes:

Step D1: Remove the protrusions from the raised wall to the datum plane of the wall;

Step D2: Fill the defective wall with putty to the datum plane of the wall. No need to wait for the putty to dry, no need to scrape or sand the putty, and no need to deliberately remove the old paint in areas such as chalking and pollution;

Step D3: Apply impregnation curing agent to the dry part of the entire wall surface;

Step D4: Cover the entire wall surface with a fiber texture network sandwich, which contains a three-dimensional interpenetrating network structure formed by fibers; roll the wall surface to make the impregnation curing agent impregnate the fibers and penetrate into the three-dimensional interaction Through the mesh of the network structure, the fiber texture network sandwich core is wet-attached to the surface of the putty to obtain a uniform color and overall flat surface infiltrated and cured fiber texture network sandwich composite wall surface, which is cured to form a refurbished wall surface;

Step D5: Coat the impregnation curing agent on the composite wall surface of the impregnated and solidified fiber texture network sandwich composite wall with uniform color and flat surface, and then paste the fiber texture network sandwich core with embossed patterns and printed patterns on The impregnating curing agent is pressed and pasted smoothly, so that the impregnating curing agent is impregnated with the fiber texture network sandwich core with embossed patterns and printed patterns, and cured to obtain a refurbished wall surface with patterns and textures.

In a preferred embodiment, after step D5, it may further include:

Step D6: Apply decorative paint on the renovated wall with color and texture to obtain the renovated wall with paint.

The method can produce rich textures and patterns similar to wallpaper, so that the renovated wall surface presents an obvious three-dimensional effect.

Comparative example 1:

Step 1. Leveling of the old paint wall: buy a brand of clean-flavor paint on the market, remove the protrusions on the drummed wall to a firm base layer, and fill the defective wall with putty to the datum plane of the wall; chalking, The old paint in the polluted areas must be removed, and the repaired putty should be polished and smoothed after drying;

Step 2: Apply the clean smell paint to the leveled old painted wall surface.

Comparative example 2:

Step 1. Leveling the old paint wall: remove the damaged old putty layer, re-scrape the new putty layer, add a batch of grid cloth in the middle of the putty layer, and then smooth the surface of the dried putty;

Step 2: Apply a commercially available brand of pure flavor paint to the leveled old painted wall.

The effect of the wall renovation method of the above-mentioned embodiment of the present invention and the comparative example is compared, and the results are as follows:

Table 1 Results of comparison of the effects of the wall renovation methods of the embodiment and the comparative example

All in all, this method shortens the construction time, and the whole construction process can be wet operation, that is, there is no need to wait for the repaired putty to dry before proceeding to the next process. And even if the putty layer or the original wall surface is not leveled, the surface decoration will not be affected. Since no sanding and leveling process is required, no dust is generated in the remaining processes except for removing a small amount of protrusions. Therefore, the method obviously reduces or even avoids construction dust. Use impregnating curing agent to cover the fiber texture network sandwich on the surface of the complex wall that is cracked, bulged, flattened, defected, chalked, chromatic aberration, and polluted. , And the refurbished wall can also have a rich texture (and/or pattern) similar to wallpaper, with obvious three-dimensional effects, and good resistance to tearing and peeling.

The method reduces the two construction processes of putty drying and polishing putty, which not only saves time, but also reduces dust, and also eliminates the noise generated by polishing. The impregnation curing agent used in this method is environmentally friendly and formaldehyde-free. For general houses, it can be renovated on the same day and moved in on the same day or the next day.

The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should fall within the scope of the present invention.

Claims

A method for renovating a wall surface, which is characterized in that it includes:

Determine the refurbished area, in the refurbished area, if there is a drum, remove the protrusions from the drummed wall area to the datum plane of the wall; and/or if there is a defect, fill in the missing wall area Putty, to the datum plane of the wall;

Apply impregnation curing agent in the refurbished area;

Cover the refurbished area with a fiber texture network sandwich core, the fiber texture network sandwich core containing a three-dimensional intersecting network structure formed by fibers;

Roll the wall surface to make the impregnating curing agent impregnate the fibers and infiltrate into the mesh of the three-dimensional interpenetrating network structure, so that the fiber texture network sandwich core is wet-adhered to the surface of the putty, and the infiltration curing fiber texture network sandwich composite wall Surface, curing the impregnating curing agent and putty to form a refurbished wall surface.
The method for refurbishing a wall surface according to claim 1, further comprising: painting a decorative paint on the composite wall surface of the infiltrated and cured fiber texture network sandwich composite wall to obtain a paint renovated wall surface.
The method for refurbishing a wall according to claim 1, further comprising: coating an impregnating curing agent on the composite wall surface of the infiltrated and solidified fiber texture network sandwich, and then sandwiching the decorative fiber texture network The core paste is covered on the impregnation curing agent, and pressed to make the impregnation curing agent impregnate the decorative fiber texture network sandwich core, and solidify to obtain the decoration and/or texture renovation of the decorative fiber texture network sandwich The wall surface, wherein the decorative fiber texture network sandwich core contains a three-dimensional interpenetrating network structure formed by fibers.
The method for refurbishing a wall according to claim 3, further comprising: applying a decorative paint on the refurbished wall with a decorative fiber texture network sandwich and/or texture to obtain the paint Renovate the walls.
The wall renovation method according to claim 3, wherein the decorative fiber texture network sandwich core comprises a fiber texture network sandwich body, and the surface of the fiber texture network sandwich body has an embossed pattern. , That is, after embossing the fiber texture network sandwich body, an embossing pattern is formed on the surface of the fiber texture network sandwich body; and/or,

The decorative fiber texture network sandwich core includes a fiber texture network sandwich body, and the surface of the fiber texture network sandwich body has a printed pattern, that is, the fiber texture network sandwich body is printed, and the fiber texture network sandwich body is printed on the fiber texture network. A printed pattern is formed on the surface of the core body;

The fiber texture network sandwich body is the same as the fiber texture network sandwich core.
The wall renovation method according to claim 1, wherein the impregnation curing agent includes an organic curing agent, an inorganic curing agent, or an organic-inorganic composite curing agent, and the particle size of the impregnation curing agent is nanometers. Grade, preferably 5-500nm, more preferably 50-300nm, more preferably 20-80nm.
The wall renovation method according to claim 1 or 3, wherein the three-dimensional interpenetrating network structure includes fibers and three-dimensional intersecting meshes formed by the gaps between the fibers.
The wall renovation method according to claim 7, wherein the arrangement of the fibers is a three-dimensional distribution, and at least includes fibers in the horizontal, vertical, and oblique directions.
The method of refurbishing a wall according to claim 8, characterized in that: in at least part of the fibers, each fiber has at least two or three of the horizontal part, the vertical part, and the oblique direction part; wherein the fiber Any one or more of the horizontal part, vertical part, and oblique direction part of the fiber cross each other, and/or any one or more of the horizontal part, vertical part, and oblique direction part of the fiber intersect with another or more Any one or more of the horizontal part, the vertical part, and the oblique direction part of the strip fibers cross each other.
A wall renovation method according to claim 1 or 3, wherein the connection points between the fibers of the fiber texture network sandwich core and the decorative fiber texture network sandwich core adopt physical connection and chemical adhesion. One or more of the knots, and the physical connection includes one or more of hot melt, needle punching, spunlacing, and hot rolling.
The wall renovation method according to claim 1 or 3, wherein the diameter of the fibers of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is preferably 50nm-5000μm, preferably 500nm -1000μm, more preferably 1μm-100μm, more preferably 1μm-50μm, more preferably 5μm-50μm, more preferably 5μm-40μm.
The wall renovation method according to claim 1 or 3, wherein the thickness of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is 0.01mm-10mm, more preferably 0.05mm -5mm, more preferably 0.1-1mm, more preferably 0.1-0.5mm, more preferably 0.2-0.4mm, such as 0.25mm, 0.28mm, 0.3mm, 0.33mm, 0.35mm, 0.37mm.
A wall renovation method according to claim 1 or 3, characterized in that: the aperture of the mesh of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is preferably 50nm-10mm, more preferably It is 100nm-5mm, more preferably 500nm-3mm, more preferably 5μm-2mm, more preferably 50μm-1mm, more preferably 0.1mm-1mm.
The wall renovation method according to claim 1 or 3, wherein the density of the fiber texture network sandwich core and the decorative fiber texture network sandwich core is preferably 1-300 g/m 2 , more preferably is 3-250g / m 2, more preferably 5-200g / m 2, more preferably 10-150g / m 2, more preferably 20-100g / m 2, more preferably 20-50g / m 2.