CN117846236A - Decorative wall surface and construction method - Google Patents
Decorative wall surface and construction method Download PDFInfo
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- CN117846236A CN117846236A CN202311718464.1A CN202311718464A CN117846236A CN 117846236 A CN117846236 A CN 117846236A CN 202311718464 A CN202311718464 A CN 202311718464A CN 117846236 A CN117846236 A CN 117846236A
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Abstract
The invention discloses a decorative wall surface and a construction method, and belongs to the technical field of buildings. According to the invention, the waterproof interface coating is prepared, the waterproof interface coating is attached to the to-be-decorated base surface on which the waterproof layer and the moisture-proof layer are finished, and then the surface of the waterproof interface coating is subjected to wall decoration, so that the waterproof interface coating and the inorganic surface of the decoration material have good compatibility, and the problems of cracking, swelling, falling and the like are not easy to occur after construction.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a decorative wall surface and a construction method.
Background
On the surfaces of the basic layers of roofs, basements, toilets, bathrooms, outer walls of buildings and the like which are required to be subjected to waterproof treatment, waterproof coatings are usually coated to form a continuous, integral, waterproof coating layer with a certain thickness. However, existing waterproof coatings are typically organic waterproof coatings, such as polyurea waterproof coatings and polyurethane waterproof coatings, that are incompatible with inorganic materials, such as cement-based materials. If the ceramic tile is paved after the organic waterproof paint such as polyurea is constructed on the areas needing wall decoration such as the wall surfaces of a bathroom and a bathroom, the ceramic tile glue is a cement-based inorganic material, and the inorganic material is difficult to adhere firmly on the surface of the organic waterproof paint, so that phenomena such as hollowing, cracking and even falling easily occur, and the use of the ceramic tile glue is severely limited.
Disclosure of Invention
The invention mainly aims to provide a decorative wall surface and a construction method, which solve the technical problems that hollowing, cracking, even falling off and the like are easy to occur when decoration is carried out on the surface of a base surface waterproof layer.
In order to achieve the above object, the present invention provides a method for decorating a wall surface, comprising the steps of:
s1: driving iron nails into the surface of a base surface to be decorated at intervals, and keeping the iron nails flush with the base surface in the horizontal plane direction;
s2: coating waterproof paint on the surface of the base surface of the driven iron nail to form a waterproof layer;
s3: coating barrier coating on the surface of the waterproof layer to form a moisture-proof layer;
s4: uniformly mixing cement, silica fume, quartz powder, redispersible polymer rubber powder and quartz sand to obtain a dry powder mixture, dissolving cellulose nanocrystals, adding water and a polycarboxylic acid high-efficiency water reducer into the dry powder mixture to obtain slurry, and adding calcium carbonate whiskers into the slurry to obtain the waterproof interface coating;
s5: placing a polytetrafluoroethylene plate horizontally, paving fine powder on the surface of the polytetrafluoroethylene plate, placing a supporting net horizontally on the surface of the fine powder, spraying the waterproof interface coating on the surface of the supporting net, turning up the supporting net after the waterproof interface coating is coagulated and maintained for 7 days, removing the polytetrafluoroethylene plate, and removing the fine powder by using a steel wire brush to obtain a waterproof interface coating with the supporting net;
s6: coating adhesive on the other surface of the waterproof interface coating with the supporting net and the surface of the moisture-proof layer of the base surface to be decorated respectively, attaching the adhesive to each other, and then temporarily fixing the waterproof interface coating by using a magnet;
s7: and taking down the magnet, and constructing a finishing layer on the surface of the waterproof interface coating with the supporting net.
In some embodiments of the invention, the support mesh has a diameter in the range of 0.03 to 0.3mm;
and/or the aperture of the supporting net is 80-300 meshes;
and/or the material of the supporting net comprises iron, steel, copper, aluminum, alloy, glass fiber, plastic fiber or carbon fiber.
In some embodiments of the invention, the fine powder comprises quartz powder; and/or the grain size of the fine powder is 100-325 meshes; and/or the thickness of the polytetrafluoroethylene plate is 0.5 mm-2 mm.
In some embodiments of the invention, the waterproof interface coating has a thickness of 0.5mm to 1.0mm.
In some embodiments of the present invention, the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 80-120 parts of a compound, namely,
silica fume: 10 to 30 parts of the components in parts by weight,
quartz powder: 20 to 50 parts of the components in parts by weight,
quartz sand: 70-100 parts of a mixture of components,
polycarboxylic acid high-efficiency water reducer: 0.1 to 0.5 part of a compound,
calcium carbonate whisker: 1 to 5 parts of the components in parts by weight,
cellulose nanocrystals: 0.1 to 1 part of the total weight of the mixture,
redispersible polymer gum: 1 to 10 parts of the components in parts by weight,
water: 15-30 parts.
In some embodiments of the present invention, the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 100 parts of the total weight of the mixture,
silica fume: 20 parts of a mixture of two or more components,
quartz powder: 30 parts of the total weight of the mixture,
quartz sand: 90 parts of a mixture of two or more components,
polycarboxylic acid high-efficiency water reducer: 0.3 part of the total weight of the mixture,
calcium carbonate whisker: 2 parts of the components are mixed together,
cellulose nanocrystals: 0.5 part of the total weight of the mixture,
redispersible polymer gum: 5 parts of the components in parts by weight,
water: 22 parts.
In some embodiments of the invention, the silica fume has a particle size of 0.1 μm to 0.2 μm; and/or the number of the groups of groups,
the particle size of the quartz sand is 100-325 meshes.
In some embodiments of the invention, the waterproof coating comprises a polyurea waterproof coating, a polyurethane waterproof coating, a JS cement-based polymer waterproof coating;
and/or the barrier coating comprises PVDC (polyvinylidene chloride).
In some embodiments of the invention, the moisture barrier layer has a thickness of 14 μm to 60 μm.
The invention also provides a decorative wall surface prepared by the construction method for the decorative wall surface.
The invention has the beneficial effects that:
the waterproof interface coating is prefabricated, and the supporting net is additionally arranged in the waterproof interface coating, so that the waterproof interface coating has the characteristics of ultra-thin and ultra-light structure, the flexibility is improved, the waterproof interface coating has the advantage of simple construction, and the waterproof interface coating can also play a waterproof role.
Specifically, the waterproof interface coating is adhered to the surface of the waterproof layer and/or the moisture-proof layer of the base surface to be decorated by using the organic adhesive, the waterproof layer and the moisture-proof layer are all organic materials, and the waterproof interface coating has the characteristics of ultra-thin and ultra-light, so that the waterproof interface coating can be firmly fixed on the base surface to be decorated, and then the construction of the decorative material is carried out on the other surface of the waterproof interface coating.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the following brief description of the drawings is given for the purpose of illustrating the embodiments or the solutions in the prior art, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from the structures shown in these drawings without the need for inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of the present invention after construction of a base surface.
1, a basal plane; 2, a waterproof layer; 3, a moisture-proof layer; 4, waterproof interface coating; and 5, a finishing layer.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The description as it relates to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
On the surfaces of the basic layers of roofs, basements, toilets, bathrooms, outer walls of buildings and the like which are required to be subjected to waterproof treatment, waterproof coatings are usually coated to form a continuous, integral, waterproof coating layer with a certain thickness. However, existing waterproof coatings are typically organic waterproof coatings, such as polyurea waterproof coatings and polyurethane waterproof coatings, that are incompatible with inorganic materials, such as cement-based materials. If the ceramic tile is paved after the organic waterproof paint such as polyurea is applied to the areas needing wall decoration such as the wall surfaces of a bathroom and a bathroom, the ceramic tile glue is a cement-based inorganic material, is difficult to bond firmly, and is easy to generate phenomena such as hollowing, cracking and even falling off, so that the use of the ceramic tile glue is severely limited.
In view of the above, the present invention provides a decorative wall surface and a construction method thereof, the construction method comprising the steps of:
s1: driving iron nails into the surface of a base surface to be decorated at intervals, and keeping the iron nails flush with the base surface in the horizontal plane direction;
s2: coating waterproof paint on the surface of the base surface of the driven iron nail to form a waterproof layer;
s3: coating barrier coating on the surface of the waterproof layer to form a moisture-proof layer;
s4: uniformly mixing cement, silica fume, quartz powder, redispersible polymer rubber powder and quartz sand to obtain a dry powder mixture, dissolving cellulose nanocrystals, adding water and a polycarboxylic acid high-efficiency water reducer into the dry powder mixture to obtain a slurry, and adding calcium carbonate whiskers into the slurry to obtain the waterproof interface coating;
s5: placing a polytetrafluoroethylene plate horizontally, paving fine powder on the surface of the polytetrafluoroethylene plate, placing a supporting net horizontally on the surface of the fine powder, spraying the waterproof interface coating on the surface of the supporting net, turning up the supporting net after the waterproof interface coating is coagulated and maintained for 7 days, removing the polytetrafluoroethylene plate, and removing the fine powder by using a steel wire brush to obtain a waterproof interface coating with the supporting net;
s6: coating adhesive on the other surface of the waterproof interface coating with the supporting net and the surface of the moisture-proof layer of the base surface to be decorated respectively, attaching the adhesive to each other, and then temporarily fixing the waterproof interface coating by using a magnet;
s7: and taking down the magnet, and constructing a finishing layer on the surface of the waterproof interface coating with the supporting net.
It will be appreciated that step S6 applies an adhesive to the other surface of the waterproof interface coating having the support net, which is the surface to which the waterproof interface coating is applied, and step S7 applies the waterproof interface coating having the support net, which is the surface facing the polytetrafluoroethylene sheet when the waterproof interface coating is applied.
The decorative material mainly made of inorganic materials is difficult to attach to the waterproof interface or the moisture-proof interface mainly made of organic materials on the base surface to be decorated, but the organic materials are easy to attach to the inorganic materials, so that the waterproof interface coating is provided, and the waterproof interface decorative layer is used as a transition layer to help the decorative material to be firmly attached to the base surface to be decorated, so that the decorative layer which is not easy to crack and bulge is formed.
The waterproof interface coating for forming the waterproof interface coating mainly comprises the following components: cement, silica fume, quartz powder, quartz sand, polycarboxylic acid high-efficiency water reducer, calcium carbonate whisker, cellulose nanocrystals, redispersible polymer rubber powder and water. The waterproof interface coating is prepared by taking inorganic materials as main materials and organic materials as auxiliary materials, the compatibility of the prepared waterproof interface coating and the decorative materials which are also mainly made of inorganic materials is good, the decorative materials are easy to attach to the surface of the waterproof interface coating, the bonding effect is good, the bonding force is strong, and the waterproof interface coating is not easy to fall off, so that the waterproof interface coating can be fixed to the surface of a waterproof layer or a moisture-proof layer of a base surface to be decorated by using an adhesive, then the construction of the decorative layer is carried out on the surface of the waterproof interface coating, the compatibility of the waterproof interface coating and the decorative layer which are mainly made of inorganic materials is good, the adhesion effect of the decorative material is enhanced, and the problem that cracks, bulges and falling off of the decorative layer obtained after the construction is finished is not easy to occur.
In the invention, the waterproof interface coating contains the supporting net, so that the waterproof interface coating has the characteristics of ultra-thin and ultra-light, and the flexibility of the waterproof interface coating is improved, thereby obtaining the advantage of simple and convenient construction.
In some embodiments, the diameter of the support mesh ranges from 0.03 to 0.3mm, it being understood that the diameter of the support mesh refers to the thickness of the support mesh. Under the condition of the diameter range, the supporting net not only has lighter weight, but also has certain strength and better flexibility, and can lighten the weight of the waterproof interface coating, so that the waterproof interface coating is easy to be attached to the surfaces of the waterproof layer and the moisture-proof layer of the base surface to be decorated, and is not easy to fall off.
In some embodiments, the pore size of the support mesh is 80 mesh to 300 mesh, and may be any one of 80 mesh to 300 mesh values, such as 80 mesh, 90 mesh, 100 mesh, 150 mesh, 180 mesh, 200 mesh, 250 mesh, 300 mesh, and the like. Under the condition of the number range, the grid structure is constructed, and the strength of the waterproof interface coating is enhanced.
In some embodiments, the support has dimensions of 1m by 1m, under which conditions construction is facilitated.
In some embodiments, the material of the support mesh comprises iron, steel, copper, aluminum, alloys, fiberglass, plastic fibers, or carbon fibers. The material has certain strength, has the advantages of light weight, light weight and good flexibility, and can lighten the weight of the waterproof interface coating, so that the waterproof interface coating is easy to attach to the surfaces of the waterproof layer and the moisture-proof layer of the base surface to be decorated, and is not easy to fall off.
In some embodiments, the fine powder comprises quartz powder. The preparation of the waterproof interface coating is carried out after the fine powder is paved on the surface of the polytetrafluoroethylene plate, and the later cleaning and polishing of the steel wire brush are carried out, so that the waterproof interface coating with smoother two surfaces is prepared, the waterproof interface coating is easy to mount on the surface of a waterproof layer or a moisture-proof layer of a base surface to be decorated, and meanwhile, the mounting and the pasting of the material to be decorated are facilitated.
In some embodiments, the particle size of the fine powder is 100 mesh to 325 mesh, with smaller particle sizes being advantageous for obtaining a water-resistant interface coating with a smooth surface.
In some embodiments, the polytetrafluoroethylene plate has a thickness of 0.5mm to 2mm.
In some embodiments, the thickness of the waterproof interface coating is 0.5 mm-1.0 mm, the waterproof interface coating in the thickness range is lighter in weight, the waterproof interface coating is easy to mount on the surface of a waterproof layer or a moisture-proof layer of a base surface to be decorated, dropping is not easy to occur, construction of the facing layer is performed on the surface of the waterproof interface coating, the pasting effect of facing materials is enhanced, and the problems of cracking, swelling and dropping of the facing layer obtained after construction are not easy to occur.
According to the invention, iron nails are driven into the surface of the base surface to be decorated at intervals, and the waterproof interface coating is fixed by the magnet, so that a smooth and consistent construction base surface can be obtained.
In some embodiments, the base surface to be decorated is driven into the iron nails at a spacing distance of 0.5 m-1.5 m, which can be 0.5m, 1m and 1.5m, and the spacing is moderate, thereby being beneficial to construction.
In some embodiments, the studs comprise large-headed round studs that enable the studs to remain flush with the base surface, which is advantageous for forming a flat, coherent organic water-repellent coating after application of the organic water-repellent coating.
In some embodiments, the diameter of the large head round iron nail is 10-30 mm and the nail length is 10-20 mm.
In some embodiments, the waterproof coating includes a polyurea waterproof coating, a polyurethane waterproof coating, a JS cement-based polymer waterproof coating.
In some embodiments, the waterproof coating is a polyurea waterproof coating, the polyurea is a novel solvent-free and pollution-free green waterproof material, and compared with the traditional waterproof material, the waterproof material has 100% of solid content, no volatile organic matter, meets the environmental protection requirement, and has the following advantages: 1. the paint does not contain a catalyst, can be quickly solidified, can be spray-molded on curved surfaces, inclined surfaces and vertical surfaces, does not generate sagging phenomenon, and has strong retentivity on concave-convex, corners and corners; 2. the method has the advantages of high and controllable curing speed, and can ensure that engineering can be quickly put into use again; 3. the construction is insensitive to water vapor and moisture, and the construction is not influenced by the environmental humidity and the temperature; 4. the construction can be carried out by adopting a spraying or pouring mode, the thickness of one-time construction can be from hundreds of micrometers to a plurality of centimeters, various inconveniences that other waterproof materials need to be constructed for many times are overcome, and the construction period is shortened: 5. the polyurea has excellent physical properties such as tensile strength, tearing strength, elongation, wear resistance, puncture resistance, cracking resistance, wet skid resistance and the like, and has strong crack bridging capability due to high elongation, so that the polyurea has excellent protection against concrete cracking; 6. the polyurea also has excellent corrosion resistance, and can resist long-term soaking of most corrosive media such as acid, alkali, salt, seawater, chloride ions and the like; 7. the polyurea coating is seamless in whole, compact and tough in structure, can be used for waterproof on the upstream surface, and can also be used for waterproof on the upstream surface; 8. the polyurea has strong and durable adhesive force to various substrates, and is not easy to fall off due to cold and hot alternation.
In some embodiments, a primer, also called a floor finish, is applied to the surface of the base surface to be decorated, prior to the preparation of the waterproof layer, which is a coating applied between the waterproof layer and the base surface. The base surface is coated with the primer, so that tiny sand holes on the base surface can be sealed, the reproducibility of the waterproof layer is better, if the tiny sand holes and gaps can not be sealed, the waterproof coating can enter the sand holes and gaps in the process of spraying the waterproof coating, and the whole engineering surface after spraying is not smooth. In addition, the primer has an important function of enhancing the binding force between the waterproof layer and the base surface, so that the waterproof layer and the base surface are firmly bonded together without leaving gaps, and the waterproof layer can be ensured not to fall off even in twenty-three years.
In some embodiments, after priming the base surface, the base surface is cured for 3 to 5 hours before the waterproof coating is prepared.
In some embodiments, the waterproof layer is constructed by uniformly brushing in a unidirectional multi-pass mode, wherein the thickness of single brushing is not more than 1mm.
In some embodiments, the first pass is one-way painted 0.5mm thick, the second pass is painted 0.8mm thick, and the third pass is painted 0.7mm thick, after which the layers are painted one by one at a thickness of 0.5mm per layer until the design thickness is met. Wherein, the coating of the later layer is carried out after the surface of the previous layer is dried, and the drying conditions are as follows: the ambient temperature is not less than 3 hours at 25 ℃, the proper interval time is not more than 15 hours at the maximum of 8 hours under the condition of no sticking hands, the allowable operation time of each time of brushing the polyurea waterproof coating is within 2 hours, the construction is completed, the maintenance is carried out for 7 days, and finally the construction of the waterproof layer is completed.
Although the waterproof layer has waterproof function, the waterproof layer has poor waterproof and moistureproof functions, such as a bathroom covered by water vapor and an environment which becomes wet in a rainy season, the waterproof layer of the decorative wall surface is difficult to block penetration of moisture, and the waterproof layer is easily corroded by the moist environment and the durability is poor over time. Therefore, the invention continuously coats the barrier coating on the surface of the waterproof layer to form the moisture-proof layer, and the moisture-proof layer is prepared to block the invasion of water vapor, so that the durability of the waterproof layer is improved, the overall waterproof effect of the decorative wall surface is improved, and the mildew speed is reduced.
The barrier coating of the present invention includes an organic barrier material, and in some embodiments, the barrier coating includes PVDC (polyvinylidene chloride). PVDC is a vinylidene chloride polymer, and the molecular structure of PVDC has a large number of symmetrical chlorine atoms, so that the molecular chain structure of PVDC is highly symmetrical, and the PVDC has very high crystallinity, thus having very high barrier property and being beneficial to blocking the invasion of water vapor.
In step S6, the surface of the waterproof interface coating coated with the adhesive and the moisture-proof layer coated with the adhesive are mutually attached, the binding force between the waterproof interface coating and the moisture-proof layer is further enhanced by the adhesive, the waterproof interface coating is prevented from easily falling off in subsequent construction, and a stable base surface is provided for construction of the finish layer.
In some embodiments, the adhesive comprises an organic adhesive, which is an organic material that readily adheres to a water-repellent or moisture-repellent layer of organic material on the surface to be decorated, and enhances the bonding of the water-repellent interface coating to the surface to be decorated.
Step S6 is also used for temporarily fixing the waterproof interface coating, so that a construction surface with a smooth and coherent surface is obtained, in some embodiments, the magnet can be removed after the waterproof interface coating is fixed and then is kept stand for 24 hours, and the waterproof interface coating and the moisture-proof layer have stronger binding force and are not easy to fall off.
After the magnet is taken down, the outermost layer of the base surface to be decorated is a waterproof interface coating, the waterproof interface coating is mainly made of inorganic materials, and the compatibility of the waterproof interface coating and the decorative material which is also mainly made of inorganic materials is better.
In some embodiments, the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 80-120 parts of a compound, namely,
silica fume: 10-30 parts of a compound, wherein the compound comprises,
quartz powder: 20-50 parts of a compound, wherein the compound comprises,
quartz sand: 70-100 parts of a mixture of components,
polycarboxylic acid high-efficiency water reducer: 0.1 to 0.5 part of a compound,
calcium carbonate whisker: 1-5 parts of a compound, wherein,
cellulose nanocrystals: 0.1-1 part of the total weight of the components,
redispersible polymer gum: 1-10 parts of a compound containing,
water: 15-30 parts.
In some embodiments, the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 100 parts of the total weight of the mixture,
silica fume: 20 parts of a mixture of two or more components,
quartz powder: 30 parts of the total weight of the mixture,
quartz sand: 90 parts of a mixture of two or more components,
polycarboxylic acid high-efficiency water reducer: 0.3 part of the total weight of the mixture,
calcium carbonate whisker: 2 parts of the components are mixed together,
cellulose nanocrystals: 0.5 part of the total weight of the mixture,
redispersible polymer gum: 5 parts of the components in parts by weight,
water: 22 parts.
Under the conditions of the weight parts, the waterproof interface coating with certain strength and smooth and flat surface is favorable to be obtained.
Cellulose nanocrystals (CNC or CNF) are rod-like or whisker-like nanoparticles, typically ranging in length from 100nm to 500nm and in diameter from 5nm to 50nm, and can be extracted from natural materials such as plants and wood. Cellulose nanocrystals have a high aspect ratio, high specific surface area, low density (1.3 g/m) 3 ) High elastic modulus, high crystallinity (54% -88%), and abundant active surface groups. Under the condition of low mixing amount (less than 0.2% of cement dry powder volume), the fluidity of the cement paste is improved, the yield stress of the cement paste is reduced, and the cellulose nanocrystals increase the dispersion degree of cement particles, so that the interaction between positive and negative charge products in hydration products is reduced, and the effect of the water reducing agent can be achieved.
The calcium carbonate whisker can obviously improve the ductility of the waterproof interface coating material, reduce the gap between cracks and prevent the phenomenon of multi-crack cracking.
The polycarboxylic acid high-efficiency water reducer is a high-performance water reducer and is used for preparing a waterproof interface coating, so that the cement can be dispersed and uniformly mixed to obtain a uniform waterproof interface coating, and the waterproof interface coating with a smooth and flat surface is prepared, so that the waterproof interface coating can be closely attached to a base surface to be decorated and a decorative layer, the binding force between the waterproof interface coating and the decorative layer is enhanced, and the risk of swelling, cracking or falling is reduced.
The present invention is not limited to the kind of redispersible polymer powder, and a redispersible polymer powder commonly used in the art may be selected.
The cement, the silica fume, the quartz powder and the quartz sand in the waterproof interface coating are all granular raw materials, a dry powder mixture can be obtained by uniformly mixing the raw materials in a simple mechanical stirring mode, and the dry powder mixture is used as a whole to be mixed with liquid raw materials, so that the uniform waterproof interface coating can be obtained more easily.
In some embodiments, the particle size of the silica fume is 0.1-0.2 μm, and the smaller particle size of the silica fume is favorable for forming a waterproof interface coating with a smooth surface, so that the waterproof interface coating is not easy to generate granular feel, can be tightly attached to a base surface to be decorated, enhances the binding force, has certain strength, and is not easy to crush in construction.
According to the waterproof interface coating, the strength of the waterproof interface coating is enhanced by adding the quartz sand, so that the waterproof interface coating is not easy to pulverize and crack in subsequent construction. In some embodiments, the silica sand has a particle size of 100 mesh to 325 mesh.
The technical scheme of the present invention will be further described in detail with reference to the following specific examples, which are to be construed as merely illustrative, and not limitative of the remainder of the disclosure.
Example 1
The method for constructing the decorative wall surface in the embodiment 1 comprises the following steps:
s1: driving large-head round nails with the diameter of 10-30 mm and the nail length of 10-20 mm into the surface of the base surface at intervals of 1m, and keeping the large-head round nails flush with the base surface in the horizontal plane direction;
s2: after the base surface of the large-head round nail is driven into the base surface, drying and keeping the water content below 7%, coating a primer on the surface of the base surface, then adopting a unidirectional multi-pass uniform coating mode to spray a polyurea waterproof coating on the surface of the primer, wherein the thickness of each coating is not more than 1mm, the thickness of each coating is 0.5mm, the thickness of each coating is 0.8mm, the thickness of each coating is 0.7mm, the coating is performed layer by layer according to the thickness of each layer until the designed thickness is met, the coating of the later coating is performed after the surface of the previous coating is dried (drying condition is that the ambient temperature is not less than 3h at 25 ℃, the maximum is not more than 15 h) and the allowable operation time of each coating is not more than 2h, and curing is performed for 7 days after construction is finished, so as to obtain the base surface containing the polyurea waterproof coating;
s3: coating PVDC barrier coating on the surface of the waterproof coating on the base surface to form a moisture-proof layer, and watering and curing for more than 7 days after the moisture-proof layer is initially set;
s4: pouring cement, silica fume, quartz powder, redispersible polymer rubber powder and quartz sand into a stirrer according to the proportion shown in Table 1, stirring at a low speed for 1 min, uniformly mixing all dry powder to obtain a dry powder mixture, fully dissolving cellulose nanocrystals to obtain a cellulose nanocrystal floating liquid, adding the cellulose nanocrystal floating liquid, water, a polycarboxylic acid high-efficiency water reducer and the dry powder mixture into the stirrer, continuing stirring at a medium speed for 3-5 min, stirring at a high speed for 2min until uniform slurry is obtained, adding calcium carbonate whiskers into the uniform slurry, and stirring at a high speed for 2min to obtain the waterproof interface coating;
s5: placing a polytetrafluoroethylene plate on a base surface, uniformly spreading quartz powder with 100-325 meshes on the surface of the polytetrafluoroethylene plate, then placing a stainless steel supporting net with the diameter of 0.035mm and the mesh size of 150 meshes on the quartz powder, uniformly coating the waterproof interface coating in the step S4 on one surface of the supporting net by adopting a mechanical spraying or manual coating method, turning over the stainless steel supporting net after the waterproof interface coating is coagulated and maintained for 7 days, removing the polytetrafluoroethylene plate, cleaning the quartz powder adhered on the surface of the coating by using a steel wire brush, carrying out surface polishing treatment, thoroughly removing surface floating pulp and looseness, grinding external corners into an arc surface, and ensuring that the polished surface is firm without floating pulp and greasy dirt, thereby forming the waterproof interface coating;
s6: coating an organic adhesive on the other surface of the waterproof interface coating with the supporting net and the surface of the moisture-proof layer of the base surface to be decorated respectively, mutually attaching, aligning the positions of the big-end round iron nails, and temporarily fixing the waterproof interface coating by adopting a magnet block;
s6: and taking down the magnet blocks after 24 hours, and paving ceramic tiles on the surface of the waterproof interface coating with the support net to finish the construction of the finish coat.
After finishing the construction of the base surface to be decorated, the decorative wall surface is obtained, and referring to fig. 1, the decorative wall surface is sequentially provided with a base surface 1, a waterproof layer 2, a moisture-proof layer 3, a waterproof interface coating 4 and a decorative surface layer 5 from bottom to top.
Comparative example 1
Comparative example 1 reference was made to the base surface decoration construction method of example 1, but the difference was that the finished construction of comparative example 2 resulted in a decorative wall surface having a base surface, a waterproof layer, a moisture-proof layer, and a finishing layer in this order from the bottom.
TABLE 1
| Raw materials (weight portions) | Example 1 | Comparative example 1 |
| Cement and its preparation method | 100 | 100 |
| Silica fume | 20 | 20 |
| Quartz powder | 30 | 30 |
| Quartz sand | 90 | 90 |
| Polycarboxylic acid high-efficiency water reducer | 0.3 | 0.3 |
| Calcium carbonate whisker | 2 | 2 |
| Cellulose nanocrystals | 0.5 | 0.5 |
| Redispersible polymer gum powder | 5 | 5 |
| Water and its preparation method | 22 | 22 |
Performance testing
The lamination effect of the facing layer was observed, and whether or not swelling, cracking and peeling occurred after 7 days was observed, and the results are shown in table 2.
TABLE 2
| Experimental group | Fitting effect of facing layer |
| Example 1 | No bulge, no cracking and no falling off |
| Comparative example 1 | The facing layer comes off |
As can be seen from tables 1 to 2, in example 1, the waterproof interface coating of the present invention was used to construct the finishing layer on the surface of the waterproof interface coating, the finishing layer and the waterproof interface coating have good compatibility, and are not prone to bulge, crack and fall off, and the waterproof and moisture-proof effects of the wall surface are further enhanced by preparing the moisture-proof layer on the surface of the waterproof layer.
Comparative example 1 construction of a finishing layer was directly performed on a waterproof interface moisture-proof layer of a base surface, the finishing layer was poor in compatibility with a waterproof interface mainly composed of an organic material, and the finishing layer was easily peeled off.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. The construction method of the decorative wall surface is characterized by comprising the following steps:
s1: driving iron nails into the surface of a base surface to be decorated at intervals, and keeping the iron nails flush with the base surface in the horizontal plane direction;
s2: coating waterproof paint on the surface of the base surface of the driven iron nail to form a waterproof layer;
s3: coating barrier coating on the surface of the waterproof layer to form a moisture-proof layer;
s4: uniformly mixing cement, silica fume, quartz powder, redispersible polymer rubber powder and quartz sand to obtain a dry powder mixture, dissolving cellulose nanocrystals, adding water and a polycarboxylic acid high-efficiency water reducer into the dry powder mixture to obtain a slurry, and adding calcium carbonate whiskers into the slurry to obtain the waterproof interface coating;
s5: placing a polytetrafluoroethylene plate horizontally, paving fine powder on the surface of the polytetrafluoroethylene plate, placing a supporting net horizontally on the surface of the fine powder, spraying the waterproof interface coating on the surface of the supporting net, turning up the supporting net after the waterproof interface coating is coagulated and maintained for 7 days, removing the polytetrafluoroethylene plate, and removing the fine powder by using a steel wire brush to obtain a waterproof interface coating with the supporting net;
s6: coating adhesive on the other surface of the waterproof interface coating with the supporting net and the surface of the moisture-proof layer of the base surface to be decorated respectively, attaching the adhesive to each other, and then temporarily fixing the waterproof interface coating by using a magnet;
s7: and taking down the magnet, and constructing a finishing layer on the surface of the waterproof interface coating with the supporting net.
2. The method for constructing a decorative wall surface according to claim 1, wherein the diameter of the supporting net is in the range of 0.03 to 0.3mm;
and/or the aperture of the supporting net is 80-300 meshes;
and/or the material of the supporting net comprises iron, steel, copper, aluminum, alloy, glass fiber, plastic fiber or carbon fiber.
3. The method of decorating a wall surface according to claim 1, wherein the fine powder comprises quartz powder; and/or the grain size of the fine powder is 100-325 meshes; and/or the thickness of the polytetrafluoroethylene plate is 0.5 mm-2 mm.
4. The method of constructing a decorative wall surface according to claim 1, wherein the thickness of the waterproof interface coating is 0.5mm to 1.0mm.
5. The method of decorating a wall surface according to claim 1, wherein the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 80-120 parts of a compound, namely,
silica fume: 10 to 30 parts of the components in parts by weight,
quartz powder: 20 to 50 parts of the components in parts by weight,
quartz sand: 70-100 parts of a mixture of components,
polycarboxylic acid high-efficiency water reducer: 0.1 to 0.5 part of a compound,
calcium carbonate whisker: 1 to 5 parts of the components in parts by weight,
cellulose nanocrystals: 0.1 to 1 part of the total weight of the mixture,
redispersible polymer gum: 1 to 10 parts of the components in parts by weight,
water: 15-30 parts.
6. The method of decorating a wall surface according to claim 5, wherein the waterproof interface coating comprises the following components in weight percent:
and (3) cement: 100 parts of the total weight of the mixture,
silica fume: 20 parts of a mixture of two or more components,
quartz powder: 30 parts of the total weight of the mixture,
quartz sand: 90 parts of a mixture of two or more components,
polycarboxylic acid high-efficiency water reducer: 0.3 part of the total weight of the mixture,
calcium carbonate whisker: 2 parts of the components are mixed together,
cellulose nanocrystals: 0.5 part of the total weight of the mixture,
redispersible polymer gum: 5 parts of the components in parts by weight,
water: 22 parts.
7. The method for constructing a decorative wall surface according to claim 1, wherein the silica fume has a particle diameter of 0.1 μm to 0.2 μm; and/or the number of the groups of groups,
the particle size of the quartz sand is 100-325 meshes.
8. The method of constructing a decorative wall surface according to claim 1, wherein the waterproof paint comprises a polyurea waterproof paint, a polyurethane waterproof paint, a JS cement-based polymer waterproof paint;
and/or the barrier coating comprises PVDC (polyvinylidene chloride).
9. The method of constructing a decorative wall surface according to claim 1, wherein the moisture-proof layer has a thickness of 14 μm to 60 μm.
10. A decorative wall surface produced by the method for constructing a decorative wall surface according to any one of claims 1 to 9.
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