新闻中心
Home > News Center > Q&A

How resistant are the coated fabrics to chlorine?
2024-06-18 02:23:43

The corrosion resistance of the coated fabric to chlorine gas refers to the corrosion resistance of the surface coating in the chlorine environment. A coating material is a protective material that forms a protective layer on the surface of a metal or other substrate to protect the substrate from environmental erosion. For machines and equipment used in chlorine corrosion environments, the coated fabric should have good corrosion resistance to improve its service life and prevent accidents.

Chlorine is an aggressive gas that can cause severe corrosion to most metals and materials, including iron, steel, copper, and aluminum. Due to the strong oxidation and toxicity of chlorine gas, most coating materials are difficult to maintain stable performance in the chlorine environment for a long time. Specifically, the corrosion resistance of the coating material is affected by a variety of factors, such as gas concentration, temperature, humidity, etc., while the type, thickness, process of the coating material will also have an impact on its corrosion resistance.

In general, coating materials can be divided into organic coatings and inorganic coatings. Organic coatings mainly refer to coating materials based on organic polymers, such as polyurethane, epoxy resin, polyurethane, etc. Inorganic coating refers to coating materials based on inorganic materials, such as zinc, aluminum, silicon, etc.

The resistance of organic coatings to chlorine gas is weak, and they mainly rely on the molecular chain structure of polymer and the role of barrier layer to improve the corrosion resistance of their coatings. The inorganic coating, because its composition is mainly inorganic substances such as metals or oxides, can better resist the erosion of chlorine gas, and is less affected by gas concentration and temperature. In addition, the inorganic coating generally has good adhesion and anti-falling ability, which can better protect the substrate from gas corrosion.

However, the corrosion resistance of different coated fabrics is also different. Taking inorganic coatings as an example, the corrosion rate and corrosion mode of different metal materials or alloys are not the same. For example, aluminum, zinc and other metals will produce a surface oxide layer in chlorine gas, forming a protective oxide, which slows down the transmission rate of chlorine gas and improves the barrier ability of the coating to chlorine gas. At the same time, there are special coating materials, such as potassium-containing glass coating, which can react chlorine gas and water to form a layer of potassium hydroxide, thereby replacing the initial oxidation layer of the substrate, forming a protective layer, and greatly improving its corrosion resistance.

In general, the corrosion resistance of the coated fabric to chlorine gas is a comprehensive performance indicator, and its corrosion resistance is not only related to the type, thickness, process and other factors of the coating material, but also related to the environmental conditions of use. Therefore, when choosing coating fabrics, it is necessary to consider various factors comprehensively, and refer to professional technical guidelines and relevant information according to the actual situation to select suitable coating materials to improve the service life of machinery and equipment and prevent accidents.


Related tags: