A kind of transparent water-based waterproof paint for building and preparation method thereof

Abstract

The invention discloses a transparent waterborne waterproof coating for a building and a preparation method thereof. The transparent waterborne waterproof coating comprises the following components in percentage by mass: 70-80% of water soluble high polymer material, 0.8-1.6% of coalescing agent, 0.8-1.6% of accelerant, 0.5-1.0% of nano material, 0.02-0.06% of penetrating agent, 0.3-0.8% of ultraviolet absorbent, 0.5-1.2% of thickening agent, 0.1-0.3% of defoaming agent and the balance of water. The coating disclosed by the invention is pollution resistant, good in weather fastness, excellent in physical and mechanical properties, acid and alkali resistance and waterproof performance, and good in transparency, and the coating does not cover the bottom, so that the coating can maintain the appearance and feature of the building when in use; and meanwhile, the coating is simple to prepare, environment-friendly, free of pollution and convenient to use and can be both spray coated and crush coated, so that the coating can be widely applied to water resistance of building periphery or exterior wall so as to provide long-term waterproof protection for the building.

Description

technical field [0001] The invention relates to a building waterproof paint and a preparation method thereof, in particular to a building transparent water-based waterproof paint and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] In the 1990s, China put forward the strategic goal of urban development as the core, and then various infrastructure constructions were carried out in full swing, especially during the "Twelfth Five-Year Plan" period, when China's construction industry achieved world-renowned development results. At the same time, waterproof materials used in conjunction with buildings have also ushered in a golden age of development. A large number of waterproof companies have sprung up, producing a wide variety of waterproof materials, which can be divided into four categories: waterproof coiled materials, waterproof coatings, sealing Adhesives, rigid waterproof materials, etc. [0003] With the...

AI Technical Summary

Problems solved by technology

After the silicone waterproofing agent reacts with the hydroxyl group, it has a hydrophobic effect, and the rainwater slides down the wall, but it does not have the ability to resist water pressure. If the water pressure is high, it will lose its waterproof effect. Secondly, this material has poor weather resistance; water glass The penetration depth of waterproof material in the facade wall is limited, and the waterproof conditions are strict. It is required that the wall is saturated before construction, and the wall is free of release agent oil, otherwise it will be invalid; (2) Roller coating of pure emulsion, such as EVA emulsion, pure acrylic acid Emulsion, but EVA emulsion has poor water resistance, which limits its application; pure acrylic emulsion has relatively good weather resistance, but its stain resistance is poor, sticky to oil and dust, and the wall is easy to be dirty and dark, resulting in bottom covering and poor transparency; (3) solvent Type waterproof coating, this material has good physical properties and good aging resistance, but the solvent is volatile, will pollute the environment, and accidents are prone to occur during construction, and some projects prohibit its use

[0005] As far as the current situation is concerned, the waterproofing of the building periphery (external wall) is far from being valued by the industry. It is a weak link in building waterproofing, and there is no waterproof material that meets the waterproof characteristics of the external wall.

Images