Coating knowledge: building materials knowledge: key points of selecting exterior wall coating

Core tip: inorganic exterior wall coating is made up of inorganic adhesive material as the main film-forming material, and then added with various pigments, fillers, additives and water This kind of coating takes water-soluble alkali metal silicate or water dispersive silica gel (commonly known as silica sol) as the main film-forming material The film has excellent weather resistance and is very stable under the action of ultraviolet rays It has good heat resistance, non combustible and smoke-free in case of fire It has good pollution resistance and is not easy to absorb ash, which can maintain bright decoration effect; In the process of production and use, there is no volatile solvent, which will not pollute the environment; its raw materials are rich in resources, and the main material is silica, which contains the most in the crust Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coating home news: inorganic exterior wall coating is made up of inorganic adhesive material as the main film-forming material, and then added with various pigments, fillers, additives and water This kind of coating takes water-soluble alkali metal silicate or water dispersive silica gel (commonly known as silica sol) as the main film-forming material The film has excellent weather resistance and is very stable under the action of ultraviolet rays It has good heat resistance, non combustible and smoke-free in case of fire It has good pollution resistance and is not easy to absorb ash, which can maintain bright decoration effect; In the process of production and use, there is no volatile solvent, which will not pollute the environment; its raw materials are rich in resources, and the main material is silica, which contains the most in the crust, so people pay attention to it However, the film is not full and decorative, which limits its use Inorganic building coating is a kind of water-based building coating, which has excellent performance, easy to use, and is beneficial to environmental protection It is in line with the development trend of high performance and low pollution of coating How to choose and buy: inorganic exterior wall coatings are mostly used in construction projects Users should pay attention to the following points when choosing and buying: 1 Do not only consider the price factor, but also pay attention to the quality of products Choose and buy the exterior wall coatings of famous enterprises that meet the requirements of national standards 2 To check the appearance and identification, first ensure that the packaging barrel is in good condition, especially in the seam or weld of the iron barrel, there should be no corrosion and leakage; then look at the explicit identification on the packaging barrel, the product model, name, batch number, color number, standard number, weight, factory name, factory address, production date and validity period should be complete 3 Understand the main film-forming materials and construction precautions of the purchased products The following points should be paid attention to in the construction of inorganic exterior wall coating: because the inorganic exterior wall coating is made of inorganic materials as film-forming materials, the adhesive force to the inorganic substrate is relatively good, but in the construction of the organic substrate, special attention should be paid to the adhesive force and the relevant expansion coefficient, otherwise it is easy to cause the coating peeling and falling off Even in the construction of inorganic base materials, attention should be paid to the water absorption, pH value, cracks and pollutants of the base materials Special attention should be paid to the curing period of the coating Due to the complex reaction mechanism of the inorganic coating, it needs a long drying time, otherwise the expected performance will not be achieved Technical standard: the test standard of inorganic exterior wall coating is JG / t26-2002 exterior wall inorganic building coating The main technical performance indexes are: in vessel state, constructability, film appearance, contrast ratio, thermal stability, low temperature stability, surface drying time, washability, water resistance, alkali resistance, temperature resistance, stain resistance of coating, artificial aging resistance, etc Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,