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    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: the application of low carbon environmental protection floor coating in the construction field

    Common knowledge of coating: the application of low carbon environmental protection floor coating in the construction field

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: Abstract: This paper introduces the general situation of organic material floor coating, the application of epoxy resin floor coating in parking lot system, the selection of underground garage floor, the main characteristics and application advantages of the developed waterborne epoxy floor coating Key words: floor coating; waterborne epoxy; parking lot; humid environment; low carbon environmental protection 0 Introduction In all kinds of modern buildings, the floor bears not only the dynamic and static loads, but also the friction loss, impact damage, various liquids and gases and environmental durability 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 Abstract: This paper introduces the general situation of organic materials floor coating, the application of epoxy resin floor coating in parking lot system, the selection of underground garage floor, the main characteristics and application advantages of the developed waterborne epoxy floor coating Key words: floor coating; waterborne epoxy; parking lot; humid environment; low carbon environmental protection 0 Introduction In all kinds of modern buildings, the floor in the building on the one hand carries the dynamic and static loads, on the other hand, it also bears the friction loss, impact damage, all kinds of liquid and gas and environmental durability erosion, on the other hand, it plays an important role in beautifying the overall building and ensuring the architectural style There are two main types of building floor: inorganic materials and organic materials This paper focuses on the application of organic materials in the construction field Organic floor materials include epoxy resin, polyurethane, acrylic acid (crosslinking) and polyurea floor materials At present, epoxy resin is still the dominant market of organic floor materials in China 1 Overview of foreign organic flooring industry organic flooring coating was first developed in Germany in 1930s, mainly made of resin, pigment, solvent, etc Modern industry has put forward more and more strict requirements for the floor, such as food, medicine and other industries, which require the floor to be free of ash, harmful volatiles, clean and dust; the mechanical industry requires to be resistant to strong mechanical impact, wear resistance, long-term withstand the rolling of forklifts and other vehicles, even if local damage is easy to repair; machine tools, instruments and meters The floor of industrial workshop is often eroded and leaked by various kinds of oil, which is difficult to remove completely, so the floor is required to have good oil resistance; the floor of chemical industry is required to be able to withstand the corrosion of various chemical media In addition, modern workshops, high-grade residential areas and family floors should be flat, bright and colorful to create a good working and living environment for people As a result of solvent-based epoxy floor coating in the production, construction and curing process will discharge a certain amount of volatile organic compounds (VOC), while solvent-free epoxy floor coating in line with the concept of environmental protection, no VOC emissions, so foreign floor coating has gradually transitioned to a solvent-free system, while solvent-based system has been very few 2 Compared with the developed countries, the domestic organic floor coating industry started later in China However, with the implementation of the reform and opening-up policy, a large number of foreign floor coating products have entered China Because of their excellent materials and construction performance, they were once favored by the construction industry The production and application technology development of floor coating in China started in the Yangtze River Delta and Pearl River Delta regions with rapid economic development It was only in the late 1990s that it began to enter the northern region and was gradually accepted and recognized The number of enterprises entering this industry is also increasing In modern factories, workshops, warehouses, logistics centers, supermarkets, exhibition halls, garages, parking lots and other occasions, most of them use floor coating products as ground decoration Epoxy is the main type of floor coating in China, and solvent epoxy is still the main type (about 70% ~ 80% of the total) As one of the earliest materials used in floor, epoxy resin products have the most mature technology and the largest amount Although China's floor coating industry has developed rapidly in the past 10 years, its market share is still very low With China's entering the historical process of building a well-off society in an all-round way, it can be expected that the investment scale in infrastructure, technological transformation, real estate and other aspects will remain at a higher level in the future, and people's demand is developing towards a better, more comfortable and healthier development In view of the irreplaceable advantages of floor coating and the improvement of public awareness, the floor coating industry in China still has a considerable development space, and the floor coating market has a huge capacity 3 The application of epoxy resin floor coating in parking lot system there are various special and harsh conditions in parking lot compared with other structures of buildings Usually in an open environment, outdoor parking lot will be tested by high temperature, sunlight exposure, low temperature, freeze-thaw cycle, rainstorm, etc The underground parking garage, however, has a long time of problems such as dark, wet, car oil leakage, battery electrolyte, cleaning and so on At the same time, the water in the air, the pollution of chemicals and the active load all play the role of corrosion, extrusion and tear on the concrete, which makes the structure suffer potential damage An unprotected concrete base course will be more and more smooth, which has a great risk to the braking of vehicles The garage floor system is widely used in parking lots all over the country, and the most widely used one is the wear-resistant heavy-duty epoxy floor The wear-resistant and heavy-duty epoxy floor refers to the 1-3mm epoxy floor coating system formed through multiple coating The products are flat and seamless, wear-resistant, acid and alkali resistant, waterproof and oil-resistant, strong impact resistance, chemical resistance, moisture-proof and skid proof In order to correctly select the type of floor and effectively control the cost, it is suggested to consider the selection of the floor for underground garage from the following aspects: (1) mechanical performance requirements: (1) wear resistance: which vehicles will walk when the floor is used When the vehicle drives into the garage, the tyres are easy to bring in certain corrosivity such as sand or acid, alkali and salt Medium, these will have some wear on the floor Many factors, such as the dead weight of the vehicle, the shape of the tire and so on, will affect the wear degree of the floor Therefore, before choosing the type of the floor, it is necessary to have some foresight on the type of the vehicles in the garage ② Pressure resistance: how much load the floor will bear when it is used In the design process of garage floor, it is recommended to divide its thickness according to the area, for example, the lane with high frequency of use can be used as 1.5-2.0mm wear-resistant and heavy-duty epoxy floor; the parking space and human shaped passage can be used as 1mm thick wear-resistant and economic epoxy floor This can not only meet the use effect, but also save costs ③ Impact resistance: whether the impact force will cause the floor peeling Epoxy floor is not the harder the better, people often hope that the greater the strength of the material, the better, and ignore the brittle fracture In fact, brittle fracture is also a fatal weakness of materials, so only when the balance of strength and flexibility is taken into account, can epoxy flooring achieve excellent impact resistance (2) Chemical performance requirements ① acid and alkali resistance: the type and concentration of corrosion-resistant chemicals in use During the use of garage, it is inevitable that corrosive substances will be brought in The floor products should have a certain degree of corrosion resistance, but if they are soaked by chemicals for a long time, their service life will be reduced, so they need to be cleaned up in time ② Oil and water resistance: resistance to oil and water when used Of course, soaking in water and oil for a long time may also cause blistering, peeling and even falling off on the surface of the paint film Therefore, when there is oil and water on the ground, it is necessary to clean it in time (3) The position of floor ① shall be analyzed according to whether the position of the floor is on the underground floor or on the ground floor If the water content is too high, it shall be ventilated and dried or waterproof treatment shall be taken, and the drying method can be adopted locally; the base course with direct contact with the soil layer on the ground must be waterproof ② The anti-skid floor shall be selected at the ramp of the garage, and the product system with different anti-skid degree can be selected according to the size of the slope ③ For exposed ramps or parking lots with sunlight, outdoor weather resistant floor coating shall be used to ensure the best use effect (4) Base surface condition ① base strength: generally, the compressive strength of concrete is required to be ≥ 20MPa ② Flatness: if the flatness is too poor, it needs to be repaired with epoxy mortar ③ Sanding and hollowing: for the parts with sanding and hollowing, the preliminary treatment shall be done well before large-scale construction (5) Aesthetic requirements ① color requirements: different colors can be divided according to different areas to achieve aesthetic effect ② Brightness requirements: high gloss self leveling products or semi gloss solvent products can be selected 4 The development of energy-saving and environmental protection epoxy floor coating products is being submitted for approval The national standard of environmental protection floor coating puts forward specific requirements for the environmental protection performance of floor materials At the same time, with the development of coating science and technology, as well as people's new concept and regulatory awareness, it puts forward higher and higher requirements for environmental protection The development of floor coatings towards solventless and water-based coatings has become a consensus in the coating industry Among them, the research of waterborne epoxy coating, especially the room temperature curing waterborne epoxy coating, has made a breakthrough, and its performance has reached the same level as that of solvent based epoxy coating 4.1 the main characteristics of waterborne epoxy floor coating (1) good air permeability, good adhesion to most of the base materials, and good adhesion on the surface of wet base materials; (2) fast curing, short construction period, strong permeability; (3) environmental protection and safety, no smell and pollution, water as the dispersion medium, non combustible, storage, transportation and use meet the national requirements; (4) It has high hardness, good wear resistance, acid resistance, alkali resistance and other properties; (5) construction operation is safe and convenient, construction tools can be directly cleaned with water, and used repeatedly, reducing the construction cost (6) Due to the particularity of curing, the water-borne epoxy floor coating has micro pores after drying, which can allow water vapor to penetrate, thus releasing the pressure of water vapor inside the concrete, making the coating free from damage, and protecting the concrete at the same time 4.2 the main advantages of water-based epoxy floor coating in application compared with solvent based floor coating, water-based epoxy floor coating is non-toxic, tasteless, environmentally friendly, and a variety of physical properties and chemical resistance are very close Compared with more than 2mm thick coating type solventless epoxy self leveling terrace, water-based epoxy terrace can be made into 0.5mm thick thin coating, which has advantages in the cost of coating per unit area In addition, it can also be directly applied to wet ground without open water The main application fields of waterborne epoxy flooring include: hospitals, kindergartens, pharmaceutical factories, office areas, schools, etc with environmental protection requirements; underground garages, food factories, etc in humid environment; and all other places where solvent based epoxy flooring can be applied In addition, waterborne epoxy series products can also be used in food
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