Construction method for plastering walls using modified silicone as the main ingredient.

Abstract

Conventional plastering materials lacked flexibility, leading to cracking after application. Furthermore, their water-based composition meant they would dissolve and wash away in rainfall during application. Application in sub-zero temperatures was also difficult, and partial repairs were challenging due to the difficulty in adjusting the color. [Solution] By manufacturing a plastering material using modified silicone as the main ingredient, the plastering material is made flexible. By combining this with a mesh such as fiberglass during application, it becomes possible to respond flexibly and strongly to external forces such as shaking, tension, impact, and vibration. Furthermore, because this material is oil-based, it has advantages such as not dissolving in rainfall during application and being able to be applied even in sub-zero temperatures, and color adjustment and repair work during repairs can be made relatively easy.

Description

Technical Field

[0001] The present invention relates to a construction method for painted wall construction used for exterior wall finishing of buildings, wall surface finishing of fence construction, etc. Metamorphic silicon is used as the main raw material of the painted wall material, and fine aggregate for expressing the finishing pattern of the painted wall, a viscosity-reducing agent for adjusting the viscosity of the metamorphic silicon, and a deterioration inhibitor for protecting the metamorphic silicon from ultraviolet rays are mixed therein. Further, a paint for coloring the painted wall material is added and stirred to produce the main material of an oil-based metamorphic silicon-based painted wall material. This painted wall construction method that is less likely to generate cracks, peeling, etc. is completed by combining this painted wall material with a glass fiber mesh formed by arranging glass fiber fibers in a mesh shape for construction.

[0002] In addition, when this metamorphic silicon-based painted wall material is applied as a finishing material to a rigid foam heat insulating material that may be used as a heat insulating material for the external side of the foundation part of a building or may be used as a fence body instead of concrete or concrete blocks when constructing a fence, for the purpose of preventing the viscosity-reducing agent mixed in the painted wall material from rapidly penetrating into the extremely fine gaps between the particles existing on the surface of the rigid foam heat insulating material, and also for the purpose of enhancing the adhesion between the rigid foam heat insulating material and this metamorphic silicon-based painted wall material, an aqueous resin adhesive is pre-applied as a base treatment agent to the surface of the rigid foam heat insulating material, and a thin resin film is formed on the heat insulating material surface by its curing, and this metamorphic silicon-based painted wall material is constructed on the resin film.

Background Art

[0003] In conventional plastering work, many problems occur after the completion of the work, such as cracking, peeling, and dirt accumulation. The main components of conventional plastering materials are often water-based resins and paints. These water-based resins are known to have poor elasticity against bending once hardened, making them prone to cracking. While increasing the resin content does improve elasticity to some extent, this elasticity decreases with decreasing temperatures, and below freezing, the likelihood of cracking due to bending becomes very high. In conventional plastering work, several undercoat layers of mortar or resin mortar are applied to the surface to be plastered, often with mesh reinforcement during this process. The plastering material is then applied after all undercoating is complete, thus completing the plastering work. While the mesh reinforcement during the undercoating process addresses tensile strength, both mortar and plaster materials inherently lack flexibility. Therefore, they are susceptible to cracking when the wall surface is bent by shaking or vibrations caused by earthquakes or strong winds.

[0004] Furthermore, plastered walls made with water-based resins and paints do not offer exceptional waterproofing. Over time, the surface waterproofing effect diminishes, and rainwater gradually begins to penetrate. Consequently, dirt also penetrates, and as time passes, the dirt adhering to the wall surface becomes more deeply embedded and difficult to remove. Using solvents to remove dirt is strictly prohibited because the main component is water-based. If solvents come into contact with the wall surface, the plaster material will dissolve, creating holes in the wall.

[0005] Furthermore, the increased moisture on the wall surface raises the risk of mold and moss growth. While attempts are made to clean these areas thoroughly and to repair damaged or scratched sections using paint as a final touch, the water-based paints used in plaster walls tend to show discoloration easily after partial repairs, and even when using the same paint as the original, it is difficult to achieve the same color.

[0006] Traditional plastering work presented numerous challenges during construction. Rainfall during plastering typically caused the applied plaster to wash away. This necessitated careful consideration of weather conditions, making it difficult to determine the start date and often leading to delays. Furthermore, water-based plasters required careful consideration of ambient temperature during application; they could not be applied at temperatures below +5°C, including at night, making winter construction in cold regions virtually impossible.

[0007] The above outlines some of the challenges that arise with commonly used water-based wall coatings. Now, let's consider oil-based wall coatings. Modified silicone is an excellent material because it is oil-based and has high elasticity. However, it also has its problems. One of them is its poor tensile strength. Generally, wall coatings are applied very thinly, at 2-3 mm, making it extremely difficult to give them enough strength to withstand tension and bending. Therefore, it is necessary to continue the conventional method of giving the mortar or resin mortar sufficient strength through several undercoating processes.

[0008] Furthermore, when manufacturing a plastering material using modified silicone as the main ingredient, it is necessary to adjust the viscosity of the modified silicone or to incorporate a viscosity reducer by adding fine aggregate. When applying this modified silicone-based plastering material to a rigid foam insulation surface, it is conceivable that the viscosity reducer contained in the plastering material will rapidly penetrate into the extremely fine gaps between particles present on the foam insulation surface. This phenomenon occurs because the viscosity reducer is oil-based, and it is thought that this can accelerate the deterioration rate of the applied plastering material. In addition, in order to increase the strength of the adhesion between the insulation surface and the plastering material, it is necessary to apply some kind of primer to the rigid foam insulation surface to flatten and harden the surface and fill the gaps between particles. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] The challenge we aim to solve is to establish an application method for a superior plastering material that addresses various post-construction problems associated with conventional plastering work. This method involves combining a new plastering material's main raw material with auxiliary materials to compensate for any shortcomings in its performance. The result will be less prone to cracking and peeling, have improved adhesion to various construction materials, offer high waterproofing, and make partial repairs less noticeable. Furthermore, it will be resistant to rain and can be applied even in sub-zero temperatures, thus solving a wide range of problems. [Means for solving the problem]

[0010] Modified silicone is generally known as a sealant that prevents water intrusion, but it is also known for its use as an adhesive. From these uses, it can be inferred that modified silicone is waterproof and has high adhesion. It is also highly elastic and exhibits rubber-like flexibility when hardened. Furthermore, it is insoluble in water even before hardening, and it maintains its flexibility even in extremely cold sub-zero temperatures, allowing for application.

[0011] Based on these considerations, this modified silicone material is suitable for solving most of the problems it seeks to address, making it an ideal material as the main ingredient for plastering materials. However, there are some points that need to be supplemented and compensated for during actual construction. One of these is its poor tensile strength. In particular, in plastering work, the plastering material is applied in a thin layer, making it difficult for it to exhibit tensile strength, and it tends to tear easily when tensile force is applied. To solve this, fiberglass mesh is used as an auxiliary material, and it is extremely important to use it in combination with the plastering material during construction.

[0012] Glass fiber mesh, constructed by arranging glass fiber fibers in a mesh-like structure, is lightweight yet possesses remarkable tensile strength. By combining it with a plastering material primarily composed of modified silicone, it becomes possible to achieve high tensile strength even with a thin layer of plastering finish. However, the mesh used in this plastering work is not limited to glass fiber mesh; any material that is lightweight, flexible, and possesses sufficient tensile strength is acceptable.

[0013] Furthermore, when modified silicone material is applied in a thin layer, there are concerns about degradation due to ultraviolet rays. Therefore, a weather-resistant material is mixed into the main ingredient, modified silicone, and a minimum application thickness of 2 mm or more is mandated. The combination of the weather-resistant material and the minimum application thickness addresses UV degradation. This has been proven in weather resistance tests using a metal weather meter.

[0014] Here is an example of the application procedure for modified silicone plaster. The modified silicone material, fine aggregate, viscosity reducer, weather-resistant material, and paint are placed in a pail at the construction site and thoroughly mixed with a hand mixer to complete the plaster material. This is applied to the surface using a trowel in two coats as a basic principle, but a fiberglass mesh is applied before the first coat hardens. After confirming that the first coat has fully hardened, the second coat is applied to complete the finish. Ideally, the fiberglass mesh should be sandwiched between the first and second coats of plaster. If the mesh is applied before the first coat hardens, the mesh will adhere to the plaster, and the mesh application process can be easily completed by simply smoothing the surface of the mesh with a trowel. In the application procedure, the modified silicone material and other auxiliary materials are described as being added separately, but it is also acceptable to use a product that combines several of these materials. For example, it is possible to use a product that combines modified silicone material with weather-resistant material, or a product that combines that with fine aggregate and paint.

[0015] Furthermore, if the surface to be treated is made of a material that allows the viscosity-reducing agent to penetrate quickly, it is necessary to apply a primer to the surface beforehand and allow it to harden. For example, concrete and mortar surfaces also allow for quick penetration, so applying a two-component oil-based primer will suppress penetration and also improve adhesion with the plastering material. In this case, an oil-based primer is used because it can be applied even during the winter months.

[0016] If the surface to be worked on is made of rigid foam insulation, applying an oil-based primer may cause the foam insulation to dissolve. Therefore, a water-based resin adhesive should be used as a primer. Although the water-based resin adhesive is cloudy white when applied, it hardens into a transparent resin material that can penetrate into the gaps between the fine particles of the foam insulation, providing an anchoring effect. It also creates a smooth, flat surface, which can improve adhesion with the plaster applied after hardening. However, water-based resins are difficult to use during the winter months, so their use must be judged on a case-by-case basis.

[0017] Modified silicone material does not contain solvents, so applying it directly to foam insulation material will not cause it to dissolve. Therefore, by devising a suitable viscosity-reducing agent, it can be applied to a variety of surfaces. For example, regarding the issue of surface treatment agents for foam insulation material in winter, as mentioned earlier, this can be solved by applying a modified silicone plaster material without aggregates while it is warmed. Warming the modified silicone-based plaster material softens it, making it easier to apply in thin layers. Furthermore, if you want to further soften the material to achieve an anchoring effect, this can be solved by using a viscosity-reducing agent that does not dissolve the foam insulation material.

[0018] A wide variety of oil-based agents can be used as viscosity reducers for modified silicone plaster walls, with weak solvents being the most common. While weak solvents have high dissolving power and are the easiest to use, they also have a strong tendency to dissolve foamed insulation and have a distinctive solvent odor. Oil-based hydrocarbon-based cleaning agents have good dissolving power, some are odorless, and do not dissolve foamed insulation, making them the most recommended viscosity reducers. Edible rapeseed oil can also be used, and given the current environmental concerns and the difficulty in handling solvents, these should be given attention.

[0019] While plastering work typically involves applying the plaster with a trowel, spraying or rolling application with a roller is also possible depending on the material mixture. Furthermore, although fiberglass mesh is considered an important auxiliary material when used in combination with plastering materials primarily composed of modified silicone, in situations where the building materials or surfaces being worked on are fixed and not moving, the mesh may be used only partially or not at all. [Effects of the Invention]

[0020] The present invention's method for applying plaster to walls using modified silicone as the main ingredient is unique in that it is an oil-based plaster material, unlike any previously available, and uses modified silicone as its main ingredient. Furthermore, by combining it with auxiliary materials such as fiberglass mesh and deterioration inhibitors, the shortcomings of the main ingredient, modified silicone, can be compensated for, and most of the problems associated with conventional water-based plaster materials, including cracking, can be resolved. The combination of modified silicone and fiberglass mesh allows for flexible and strong response to various movements such as shaking and tension on the applied surface, and even relatively large holes and scratches can be repaired by sealing them with the mesh. In addition, being oil-based makes color adjustment and repair relatively easy, and it can withstand extremely cold temperatures below freezing, and dissolution by moisture during application can be prevented. This method makes it possible to obtain advantages that were not possible with conventional water-based plaster materials. [Brief explanation of the drawing]

[0021] [Figure 1] This is a detailed construction drawing assuming the painting wall construction surface is a concrete and mortar surface. In the figure, 2 is the surface of the construction surface. Since the concrete and mortar surfaces have high oil permeability, the two-component oil-based primer of 3 is applied, and the glass fiber mesh of 5 is stretched for the first application of the painting wall material of 4. After the first application is cured, it is finished with the second application of 6. [Figure 2] This is a detailed drawing assuming the painting wall construction in a wooden structure. The building material on the surface where the painting wall material of 7 is applied is assumed to be a vertically installed unpainted siding material. Since this building material has a primer applied to its surface in advance, the primer is only applied to the screw marks and urethane putty treatment marks at the construction site. Since putty treatment has been done and the building material is also adhered and fixed to the wooden base of 8, the need for a full-surface mesh is omitted. [Figure 3] This is a detailed construction drawing assuming a horizontally installed unpainted siding material in a wooden structure. 8 and 9 are the wooden bases for constructing this building material, which are firmly fixed by the screws of 11. In addition, since an adhesive is applied to the joint part of the building material of 12 to adhere and fix between the wood and the building material, the full-surface mesh is omitted. Urethane putty is applied to the horizontal joints between the building materials of 8, and a glass fiber mesh tape is stretched at the vertical joint part between the building materials of 5-2 to ensure everything is perfect. [Figure 4] This is a detailed construction drawing of the painting wall assuming the construction of a wall using a rigid foam insulation material. It is characterized in that the resin adhesive of 17 is applied to the rigid foam insulation material of 18, and the glass fiber mesh of 5 is constructed on the entire surface.

Explanation of symbols

[0022] 1 Concrete frame 2 Concrete surface or mortar surface 3 Two-component oil-based primer 4 First application of the painting wall material (undercoat) 5 Glass fiber mesh (5mm square mesh) 6 Second application of the painting wall material (finishing coat) 7 Primer-treated unpainted siding material 8 Urethane putty 9 Wood base (peeled wood 18×105) 10 Wood base (body edge material 18×45) 11 Screw fastening 12 Application of siding adhesive 13 Wooden post (105×105) 14 Intermediate post (30×105) 15 Structural plywood 16 Moisture-permeable waterproof sheet 17 Resin adhesive 18 Rigid foam heat insulating material 120 mm thick 19 Steel L-angle (40×40×5) 20 Reinforcement mortar filling 21 Mortar filling port 22 Concrete foundation base

Claims

1. A method for applying plaster to walls, primarily used for exterior wall finishing work on buildings and wall finishing work on fences, characterized in that the main plaster material is made by using modified silicone as the main raw material of the plaster material, mixing it with fine aggregate, viscosity reducer, deterioration inhibitor, and paint, and then mixing the resulting plaster material with a fiberglass mesh in which fiberglass fibers are arranged in a mesh-like structure.

2. This construction method involves applying a water-based resin adhesive to rigid foam insulation as a base coat when directly applying a plastering material made primarily from modified silicone to rigid foam insulation. This allows the adhesive to penetrate the extremely fine gaps between particles on the surface of the rigid foam insulation, and as it hardens, it integrates the rigid foam insulation with the hardened acrylic resin, improving adhesion. Furthermore, it enhances the adhesion of the plastering material made primarily from modified silicone to this hardened acrylic resin surface, resulting in significantly improved adhesion compared to directly applying the plastering material made primarily from modified silicone to the rigid foam insulation.

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