Special permeation type crystallization film-forming waterproof agent for building outer wall surface

Abstract

The invention relates to a special permeable crystal film-forming waterproof agent for a building outer wall surface, which is directly brushed or sprayed on the cement outer wall surface and the stone outer wall surface of a newly-built building for water prevention, and active silicon ions permeate into the inner structure of the wall surface after the cement outer wall surface, the stone outer wall surface and the insulation board outer wall surface of the building leak. According to the invention, a three-dimensional network crystal structure is formed, a colorless transparent hydrophobic layer is formed, emulsion components generate a layer of compact and tough ultraviolet-resistant anti-aging waterproof coating film on a building wall surface, a three-dimensional network type waterproof structure is formed on an outer wall surface of a building, and a long-term waterproof effect is ensured.

Description

Technical Field

[0001] The patent of the present invention relates to building wall waterproofing materials, especially to waterproofing of cement exterior walls and stone exterior walls of newly built buildings, and a special penetrating crystalline film-forming waterproofing agent for building exterior walls after leakage occurs on the existing building cement exterior walls, stone exterior walls and insulation board exterior walls. Background Art

[0002] The exterior wall is located around the building and is the maintenance component of the building. It plays an irreplaceable role in windproof, rainproof, heat preservation, heat insulation, sound insulation, etc. The waterproofing of the exterior wall can ensure that the building prevents the leakage of rainwater, domestic water and groundwater erosion within the design durability, ensure that the building structure and internal space are not damaged, and provide people with a comfortable and safe living environment. It occupies an important position in the entire construction project. Due to the lack of waterproofing measures, the exterior walls of newly built buildings are directly in contact with the outside world. The influence of wind, sun, rain erosion and temperature changes all year round can easily lead to the occurrence of water leakage on the exterior walls. At the same time, the exterior walls of the existing buildings are damaged by the original structure of the exterior walls due to later decoration and other reasons, forming a water leakage channel. Water leakage on the exterior wall of the building, on the one hand, greatly reduces the service life of our building materials and decorative materials; on the other hand, if people stay in such a humid and evaporating environment for a long time, it will be detrimental to their health.

[0003] At present, there are effective measures for waterproofing the cement exterior walls and stone exterior walls of newly built buildings, and for dealing with leakage of the cement exterior walls, stone exterior walls and insulation board exterior walls of existing buildings.

[0004] Spraying construction of waterproofing materials: Use liquid waterproofing materials such as silicone waterproofing agents and inorganic silicone waterproofing agents to spray directly on the surface of the exterior wall, forming a colorless, transparent, UV-resistant, breathable film that is imperceptible to the naked eye. When encountering rain or humid air, water droplets will flow naturally to prevent moisture from invading. However, this type of material is rigid. When irregular cracks are formed on the surface of the exterior wall structure due to external factors such as thermal expansion and contraction, this type of material cannot cope with the cracks caused by the structure, which will lead to water leakage again.

[0005] Coating waterproof materials are applied by brushing or spraying: JS composite waterproof coatings, polyurethane waterproof coatings, acrylic waterproof coatings and other materials are applied by brushing or spraying on the exterior wall of the building to form a film of a certain thickness on the exterior wall surface to achieve the purpose of waterproofing. After the construction of coating materials, they can be well bonded to the base layer. The thickness of the coating waterproof layer is prone to uneven thickness. When brushing, the paint will accumulate in the pits of the base layer, and the paint will flow around the convex blocks. At the same time, with the influence of wind, sun, rain, snow, freeze and thaw, peeling will occur after a long time, resulting in a weakened waterproof effect.

[0006] Waterproof mortar scraping treatment: Waterproof mortar is scraped on the exterior wall of the building to form a coating with waterproof function. However, due to temperature difference and drying, the overall surface of the plaster may shrink and cause cracks, forming a water leakage channel. Summary of the invention

[0007] In view of the problems existing in various waterproof materials and corresponding construction methods on the market, the present invention proposes a novel penetrating crystalline film-forming waterproof agent specially used for building exterior walls, which optimizes product performance and broadens application fields.

[0008] The patented penetrating crystalline film-forming waterproofing agent for building exterior walls is a single-component water-based liquid waterproofing agent, and its formula is composed of 51% pure acrylic emulsion, 45% silicone waterproofing agent, 1% leveling agent, 0.5% pure acrylic emulsion thickener, 1.3% antioxidant and anti-aging agent, 1% preservative, and 0.2% defoaming agent.

[0009] The pure acrylic emulsion is an emulsion obtained by copolymerizing various acrylic acids, methacrylic acids, methyl methacrylate, acrylic esters and functional additives through an optimized process.

[0010] The organic silicon waterproofing agent is one of sodium methyl siliconate, sodium methyl silicate and potassium methyl silicate.

[0011] The leveling agent is one of alkyl-modified organic siloxane and terminal-modified organic silicon. It can promote the coating to form a flat, smooth and uniform coating film during the drying and film-forming process, effectively reduce the surface tension of the coating liquid, improve its leveling and uniformity, improve the permeability of the coating liquid, reduce the possibility of spots and marks when brushing, increase coverage, and make the film formation uniform and natural.

[0012] The defoamer is mainly an organosilicon defoamer, and its main component is polydimethylsiloxane.

[0013] The functional principle of the present invention is that the special penetrating crystalline film-forming waterproofing agent for building exterior walls is directly brushed or sprayed on the waterproof cement exterior walls and stone exterior walls of newly built buildings, and on the exterior walls of buildings after leakage occurs on the existing cement exterior walls, stone exterior walls, and insulation board exterior walls. Active silicon ions penetrate into the internal structure of the wall to form a three-dimensional network crystalline structure and a colorless and transparent hydrophobic layer. The emulsion components generate a dense, tough, UV-resistant, and anti-aging waterproof coating on the building wall, forming a three-dimensional network waterproof structure on the building exterior wall to ensure a long-term waterproof effect.

[0014] The beneficial effects of the present invention are as follows: the special penetrating crystalline film-forming waterproofing agent for building exterior walls is used as a composite waterproofing material, with pure acrylic emulsion as the main ingredient and the cooperation with other auxiliary materials such as a leveling agent. After drying, the coating film formed by the agent has the advantages of water resistance, alkali resistance, acid resistance, stain resistance, density, toughness, etc., and can effectively cope with the influence of external factors such as thermal expansion and contraction on the exterior wall. The coating film will not cause new water leakage due to cracks in the wall. At the same time, the organic silicon waterproofing agent is integrated, and with its penetrating performance, a colorless and transparent hydrophobic layer is formed in the internal structure of the wall. The organic cooperation of the double-layer waterproofing realizes a three-dimensional waterproof protective layer, thereby achieving a reliable waterproofing effect. DETAILED DESCRIPTION

[0015] The present invention discloses a production process embodiment of a special penetrating crystalline film-forming waterproofing agent for building exterior walls.

[0016] The invention discloses a special penetrating type crystalline film-forming waterproofing agent single-component aqueous liquid waterproofing agent for building exterior walls. The weight amounts are as follows: 51 kg of pure acrylic emulsion, 45 kg of silicone waterproofing agent and 0.2 kg of defoaming agent are sequentially added into a high-speed disperser, and the mixture is stirred continuously for 90 minutes. Then, 1 kg of leveling agent, 0.5 kg of pure acrylic emulsion thickener, 1.3 kg of antioxidant and anti-aging agent and 1 kg of preservative are sequentially added, and the mixture is stirred continuously for 60 minutes. After the machine is stopped, the mixed liquid is filtered to remove impurities, and the mixture is packaged to obtain about 100 kg of the special penetrating type crystalline film-forming waterproofing agent for building exterior walls.

[0017] The construction and application method of the special penetrating crystalline film-forming waterproofing agent for building exterior walls of the present invention is as follows.

[0018] Carry out detailed node processing on the exterior wall of the building, clean the dust, and reinforce the loose base with cement mortar and other materials.

[0019] Before use, stir the special penetrating crystalline film-forming waterproofing agent for the building exterior wall evenly, use a brush, spray gun and other tools to brush or spray on the construction surface, ensure that there is no missed brushing and accumulation on the construction base surface, apply 1-2 times according to the needs of the project, and make sure the lower layer is dry and not sticky when the upper layer is dry.

[0020] The application places of the present invention are waterproofing of cement exterior walls and stone exterior walls of newly-built buildings, and exterior walls of buildings after leakage occurs on cement exterior walls, stone exterior walls and insulation board exterior walls of used buildings.

Claims

1. A special penetrating crystalline film-forming waterproofing agent for building exterior walls, characterized in that: It is a single-component water-based liquid waterproofing agent prepared by the following ingredients in percentage by weight: 51% pure acrylic emulsion, 45% silicone waterproofing agent, 1% leveling agent, 0.5% pure acrylic emulsion thickener, 1.3% antioxidant and anti-aging agent, 1% preservative, and 0.2% defoaming agent. It can be directly applied or sprayed on the waterproof cement exterior walls and stone exterior walls of newly built buildings, as well as on the exterior walls of buildings after leakage of cement exterior walls, stone exterior walls, and insulation board exterior walls of used buildings. The active silicon ions penetrate into the internal structure of the wall to form a three-dimensional network crystalline structure and a colorless, transparent hydrophobic layer. The emulsion components generate a dense, tough, UV-resistant, and anti-aging waterproof coating on the building wall, forming a three-dimensional network waterproof structure on the building exterior wall to ensure a long-term waterproof effect.

2. A special penetrating crystalline film-forming waterproofing agent for building exterior walls according to claim 1, characterized in that: The pure acrylic emulsion is an emulsion obtained by copolymerizing various acrylic acids, methacrylic acids, methyl methacrylate, acrylic esters and functional additives through an optimized process.

3. The special penetrating crystalline film-forming waterproofing agent for building exterior walls according to claim 1, characterized in that: The organic silicone waterproofing agent is one of sodium methyl siliconate, sodium methyl silicate and potassium methyl silicate.

4. The special penetrating crystalline film-forming waterproofing agent for building exterior walls according to claim 1, characterized in that: The leveling agent is a type of alkyl-modified organic siloxane or terminal-modified organic silicone. It can help the coating form a flat, smooth and uniform coating during the drying and film-forming process. It can effectively reduce the surface tension of the coating liquid, improve its leveling and uniformity, improve the permeability of the coating liquid, reduce the possibility of spots and marks when brushing, increase coverage, and make the film formation uniform and natural.

5. The special penetrating crystalline film-forming waterproof agent for building exterior walls according to claim 1, characterized in that: The defoaming agent is mainly a silicone defoaming agent, and its main component is polydimethylsiloxane.