China's epoxy floor coatings industry began in the late 1990s. Foreign epoxy floor coatings technology entered China and was gradually introduced, absorbed and improved by China's paint research institutes and enterprises, forming a unique floor coatings market in China. With the rapid development of China's economy, especially the rapid growth of pharmaceutical, chemical, electronic and other industries, the market of epoxy flooring industry is growing rapidly, and the variety of coatings is becoming more and more abundant, and the performance of products is constantly improving. In recent years, environmental protection of coatings products has been paid more and more attention. Solvent-free or high solid coatings have been widely used in thick coating systems.
We often encounter dust in the construction of epoxy flooring. What should we do at this time? If you encounter this situation and don't know how to deal with it, let's see how to deal with it. 粉末涂料的颗粒直径大多在10~90谬，其中颗粒直径在30~40谬的占60%~70%，这类粉尘对喷粉室内的操作人员危害最为严重。
Particle diameters of powder coatings are mostly between 10 and 90 fallacies, of which 60% to 70% are between 30 and 40 fallacies. This kind of dust is most harmful to operators in powder spraying room.
The harm of dust to human body is related to its particle diameter. Dust with 50 fallacies of particle diameter can almost be completely blocked in nose, throat, trachea and bronchus. Dust with 10-15 fallacies can be blocked in upper respiratory tract. Dust with 5-10 fallacies can reach lungs.
In the process of coating polishing in epoxy flooring industry, the paint film often needs polishing treatment. The particle size of the polished dust is relatively small, the suspension time in the air is long, and it is easy to inhale into the body. Fine particles can enter the pulmonary bubbles, which is harmful.
Mechanical rust removal is mainly to remove the metal oxide skin on the floor, concrete floor dirt and old floor paint. In the floor rust removal construction, tools rust removal, sand blasting, shot blasting and other construction methods will be used. These construction methods will produce a lot of dust. At the same time, abrasive particles will also be produced by abrasive disc wear in the process of mechanical use.
In order to reduce the influence of silica dust produced by abrasives, the content of silica in abrasives is generally controlled. It is strictly prohibited to use more than 70% quartz sand when sandblasting.
Dust-proof safety measures:
(1) Choosing suitable epoxy floor coating and industrial construction method
This is the most effective measure to eliminate or reduce dust sources. Mainly include: the production of ingredients as far as possible to achieve mechanization; as far as possible to use chemical methods of rust removal; must carry out mechanical rust removal, as far as possible to choose wet operation.
(2) Epoxy Floor to Prevent Dust Diffusion
Various measures can be adopted, such as ventilation and dust removal. For operators, they should wear protective devices such as dust masks, oxygen-permeable helmet and work clothes to protect them, so as to minimize the hazards of dust.
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