Non-destructive repair waterproof paint of external wall

Abstract

The invention provides non-destructive repair waterproof paint of an external wall. A water seepage region is effectively repaired under the condition that a wall surface of the external wall is not damaged, and the waterproof and pollution-resisting performances are good. According to the technical scheme provided by the invention, the non-destructive repair waterproof paint of the external wall comprises 50 percent to 70 percent of waterborne synthetic resin, 2 percent to 10 percent of silane nanoparticle, 10 percent to 30 percent of enhancement powder, 0.3 percent to 1 percent of a de-foaming agent, 0.1 percent to 0.3 percent of a bactericide and 0.3 percent to 1 percent of a thickening agent. The non-destructive repair waterproof paint is prepared by adopting the following method: adding the waterborne synthetic resin and the silane nanoparticle into a dispersion jar and uniformly stirring; adding and mixing the enhancement powder and the de-foaming agent, and uniformly stirring; adding the bactericide and mixing, and uniformly stirring; adding the thickening agent and mixing, and uniformly stirring; filtering and packaging.

Description

technical field [0001] The invention relates to the field of coatings for exterior walls of buildings, in particular to a waterproof and non-destructive repair coating for exterior walls. Background technique [0002] Architecture is the main component of a city, and the color of buildings adds a unique personality to the city. However, as long as we observe carefully, we will find that many building walls are coated with waterproof paint due to local water seepage, causing the building to become a big face and greatly reducing the architectural decoration. The reason is that a large amount of Portland cement has been added to the waterproof paint. . This opaque, waterproof coating adheres permanently to building walls and is difficult to remove. [0003] At present, in the field of construction, most of the newly-built buildings do not adopt exterior wall waterproofing measures. Generally, after the exterior wall leaks, the exterior wall of the leaking area is waterproofe...

AI Technical Summary

Problems solved by technology

However, as long as we observe carefully, we will find that many building walls are coated with waterproof paint due to local water seepage, causing the building to become a big face and greatly reducing the architectural decoration. The reason is that a large amount of Portland cement has been added to the waterproof paint.

This opaque, water-repellent coating permanently adheres to building walls and is difficult to remove

[0003] At present, in the field of construction, most of the newly-built buildings do not adopt exterior wall waterproofing measures. Generally, after the exterior wall leaks, the exterior wall of the leaking area is waterproofed and repaired. When processing, two methods are used. One is to The wall in the leaking area is damaged and repaired by applying waterproof paint. This method will damage the wall and seriously affect the appearance of the building; Both are added with cement, so when the paint is applied to the exterior wall, it is inconsistent with the color of the exterior wall, which will also seriously affect the appearance of the building

[0004] Moreover, the glass transition temperature of the resin used in the existing waterproof coatings is between -7°C--12°C, and the resin with a low glass transition temperature is easy to stick back at normal temperature, and it is easy to adhere to the dust in the air. The rainwater of the coating film is difficult to wash off, so the coating film is polluted in a short time after painting, which affects the overall appearance of the building and damages the decoration of the exterior wall of the building

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