What are the characteristics of ETFE anti-corrosion coating sprayed on the head

Source：www.dqig.cn Release date： 2025年01月06日

Information summary：When ETFE (ethylene tetrafluoroethylene copolymer) anti-corrosion coating is applied to the head, it has the following significant characteristics: 1. Good corrosion resistance Wide chemical resistance: ETFE coating can resist the corrosion of various corrosive substances such as strong acids, strong bases, organic solvents, etc. Whether it is frequently exposed to sulfuric acid, hydrochlo

When ETFE (ethylene tetrafluoroethylene copolymer) anti-corrosion coating is applied to the head, it has the following significant characteristics:
1. Good corrosion resistance
Wide chemical resistance: ETFE coating can resist the corrosion of various corrosive substances such as strong acids, strong bases, organic solvents, etc. Whether it is frequently exposed to sulfuric acid, hydrochloric acid, sodium hydroxide solutions in chemical production, or various complex hydrocarbon compounds encountered in petroleum refining, it can form stable protection, delay the corrosion rate of the head metal substrate, and extend the service life of the head.
Good weather resistance: The head exposed to outdoor environments must withstand tests such as direct sunlight, wind and rain erosion, and temperature changes. ETFE coating has good weather resistance, and long-term exposure to ultraviolet radiation will not cause aging or powdering. It can maintain its anti-corrosion effect for a long time under harsh outdoor weather conditions, ensuring the integrity of the head.
2. Good physical properties
Low friction coefficient: The coating surface is extremely smooth with a very low friction coefficient. When the head participates in the process flow and the fluid medium flows through the pipe, the resistance loss is greatly reduced, which helps to improve the operating efficiency of the entire conveying system and reduce energy consumption. It is of great significance for industrial pipeline systems with long-distance and large-scale transportation.
High hardness and wear resistance: In some industrial scenarios with solid particle erosion, such as tailings conveying pipeline heads in mining, the high hardness of ETFE coating endows it with good wear resistance, which can withstand long-term friction and impact of particles, avoid rapid wear of the coating, and maintain long-term protection of the head.
Good flexibility: During installation and operation, the head may undergo certain deformations due to thermal expansion and contraction, external compression, etc. ETFE coating has good flexibility and can moderately deform with the head substrate, without easily cracking or peeling, always adhering to the surface of the head to provide protection.
3. Excellent thermal performance
High temperature resistance: It can work stably in high temperature environments of 150-200 ℃. In many chemical reactions and thermal transportation systems, even if the fluid in the pipeline is in a high temperature state, the ETFE coating will not soften or flow, firmly guarding the head and preventing accelerated corrosion caused by high temperature.
Thermal insulation: ETFE coating has a certain degree of thermal insulation ability, which can block the transfer of external heat or the loss of internal heat. At the head of thermal engineering, this helps to maintain the stability of the system's heat, reduce unnecessary heat exchange, and improve energy utilization efficiency.
4. Environmental Protection and Easy Construction
Environmentally friendly and non-toxic: The ETFE coating itself is non-toxic and will not release harmful substances into the fluid medium flowing through the head, meeting the strict environmental standards of industries such as food and medicine, ensuring the quality and safety of the transported materials.
Convenient construction: Both spraying technology and electrostatic spraying, fluidized bed immersion coating and other methods can be used to attach to the surface of the head. The construction process is relatively simple, and the coating solidifies quickly, which can effectively shorten the construction period and save time and labor costs.
5. Long term economy
Long lifespan: Taking into account the various performance advantages of ETFE coating, it can maintain a good anti-corrosion state for a long time, reduce the frequency of frequent maintenance and replacement of the head, and lower long-term operation and maintenance costs.
High cost-effectiveness: Compared to the frequent replacement of corroded and damaged heads, as well as the resulting losses such as production stoppage and leakage cleaning caused by corrosion, the initial investment in spraying cost is extremely outstanding in terms of cost-effectiveness.

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