First, the reasons for the appearance of decorative paint on the exterior wall
The selection and color façade of the new building's façade is becoming more and more abundant. The paint is the lightest, the most colorful and the safest. It is an important exterior wall decoration choice for the 21st century.
At present, with the steady growth of China's economic development, the city's construction is changing with each passing day, the shape is unique, and the buildings with striking appearance are everywhere. The facade of the new building is also richer in material selection and color. Glass curtain wall and natural stone ( Stone decoration effect map), glazed tiles, ceramic mosaic tiles, architectural coatings, etc. In recent years, with the gradual improvement of people's living standards, people are increasingly demanding the living environment of the city. We are gradually aware of the existence of light pollution in the glass curtain wall, and the safety cannot be ignored. The lightning protection and durability of the metal curtain wall are also worrying. The load and moisture of natural stone can not be ignored, and the glazed brick is easy to fall off. The exterior wall paints are the lightest, the brightest, and the safest, and are gradually gaining popularity. The advantages of exterior wall coating on the facade of the building, in addition to bright colors, low construction load, low price, simple construction, short construction period and easy to update, are energy-saving products with lower energy consumption in production. As a real estate development enterprise, the relative price of exterior wall coatings is relatively low, which can reduce the engineering cost, the construction period is short, and it is convenient to guarantee the construction period, and the finishing is selected.
Second, the advantages of exterior wall coatings
Energy consumption | In line with national building energy conservation planning and requirements |
Decoration effect: | The colors and forms are diverse, elegant and elegant, and can be gorgeous and lively, in line with the characteristics of individuality; |
performance | Stable color, stable chemical properties, easy repainting; |
Construction | Brushing, roller coating, spraying, convenient construction, low threshold and high efficiency; |
Economic costs: | Low cost, no pollution cost |
Safety and environmental protection | Low weight, water-based products are safe and environmentally friendly. |
Third, the variety of exterior wall coatings
1. Exterior wall architectural coatings
There are two main categories of exterior wall architectural coating products: water-based exterior wall coatings and solvent-based exterior wall coatings.
Water-based exterior wall coating is water-based, non-toxic, odorless, non-combustible, and is a green environmentally friendly product. It is the development direction of architectural coatings. Can be divided into synthetic resin emulsions (styrene-acrylic, pure acrylic, silicone-modified acrylic, water-based polyurethane and other thin coatings and thick coatings); inorganic polymer architectural coatings (silicate, silica sol as a base material) Various inorganic polymer coatings); organic-inorganic composite coatings (synthetic resin emulsions and silica sol-based coatings).
Most of the solvent-based exterior wall coatings use aromatic hydrocarbons as solvents, and the VOC content is high, which is not conducive to environmental protection. However, such coatings have the characteristics of high hardness, full coating film, and no season restrictions on construction. In recent years, low-toxic solvent-based coatings have emerged, replacing aromatic hydrocarbon solvents with aliphatic hydrocarbons or other low-toxic solvents, reducing pollution, maintaining original performance, and having a good development prospect. Can be divided into acrylic, low-toxic acrylic; polyurethane, acrylic polyurethane; silicone acrylic resin; fluorocarbon resin.
Fourth, the choice of wall coatings of different materials
Brick-concrete structure plastering wall: suitable for pure acrylic latex coating, cross-linked high-elastic latex coating, acrylic polyurethane exterior wall coating, solvent-based acrylic exterior wall coating, etc., according to the quality requirements of the project, according to the paint weathering period High and low choice. Frame ceramsite concrete block plastering wall: pure acrylic latex paint, cross-linked high elastic latex paint, acrylic polyurethane exterior paint, silicone modified acrylic paint. Recommended for wall cracking problems, waterborne with elastic coatings.
Frame aerated concrete block plastering wall: pure acrylic latex paint, cross-linked high elastic latex paint, acrylic polyurethane exterior paint, silicone modified acrylic paint. Recommended for wall cracking problems, waterborne with elastic coatings.
External thermal insulation of the frame (insulation mortar, polystyrene board insulation, steel mesh frame polystyrene board after hanging insulation, etc.) Wall: Cross-linked high-elastic latex paint. Due to the thermal insulation material and concrete plastering, there is a large difference in dynamic crack resistance. It is recommended to choose a coating with different resin and high elasticity.
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