Corrosion resistance of superhydrophobic and nano silica coatings
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Update time : 2024-01-25 14:55:17
Metal corrosion is a global problem that not only affects the normal operation of various equipment and facilities, causing huge economic losses but also poses a serious threat to the environment and public safety. The annual metal loss caused by corrosion is astonishing. Therefore, metal corrosion protection has become an important research topic.
Limitations of existing corrosion protection mechanisms
At present, the main methods used for metal corrosion prevention include coating protection, electrochemical protection, and corrosion inhibitor protection. However, these methods have certain limitations in practical applications. Although coating protection can effectively isolate metals from corrosive media, its lifespan is limited, and it is susceptible to environmental factors such as temperature, humidity, chemicals, etc. Although corrosion inhibitors can inhibit corrosion to a certain extent, their effectiveness is not stable enough and is easily affected by physical and chemical factors.
(Nano Silica Podwer)
Superhydrophobic coating
Its surface has extremely low wettability, which allows liquids such as water droplets and oil droplets to slide off the surface easily, effectively preventing contact between corrosive media and metal surfaces and thereby preventing corrosion from occurring. In addition, superhydrophobic coatings also have good self-cleaning, anti-fogging, and anti-fouling properties. In recent years, with the Development of nanotechnology, the preparation and application of superhydrophobic coatings have been widely studied and explored.
(Nano Silica Podwer)
Corrosion resistance of superhydrophobic PTFE and nano-silica coated steel
In order to study the performance and application of superhydrophobic coatings and nano-silica coatings in metal corrosion prevention, researchers have conducted a large number of experiments and studies. Among them, the research on superhydrophobic PTFE and nano silica-coated steel is particularly noteworthy.
The experimental results indicate that superhydrophobic PTFE and nano silica-coated steel have excellent corrosion resistance. This is mainly because superhydrophobic coatings can effectively prevent contact between corrosive media and metal surfaces, reduce the energy level of metal surfaces, and thus prevent corrosion from occurring.
Conclusion
Superhydrophobic coatings and nano-silica coatings, as a new type of anti-corrosion material, have broad application prospects. They can be applied not only in fields such as construction, automobiles, and ships but also in fields such as petroleum, chemicals, and electricity. In the future, with the continuous progress of technology and the expansion of application fields, superhydrophobic coatings and nano-silica coatings will play an increasingly important role in the field of metal corrosion prevention. At the same time, further research and exploration are needed on their preparation processes, performance optimization, and application scope to serve the Development of human society better.
The application of nano silica powder
One of the major biomedical applications of nano silica is as a vehicle for drug delivery via eye drops, intravenous injection, oral tablets, or pulmonary inhalation routes.
In textiles: nano silicon can reflect ultraviolet light, resist aging, increase weather resistance, increase strength and other effects. After testing, it was found that the fiber contains nano silicon that can reflect 75% of 400nm wavelength ultraviolet radiation, and nano silicon below 100nm has antibacterial and deodorizing effects.
In epoxy resin, nanosilicon enhances the properties of acid and alkali resistance, chemical stability, high-temperature resistance, surface hardness, scratch resistance, waterproofing, insulation, etc. Adding less than 20% of nano silicon can double the product's strength, reducing resin usage and production costs.
In rubber silicone modification: Nano silicon is a product reinforcing agent specifically designed for rubber silicone modification. Because of pure rubber's low performance, it is unsuitable for many scenarios and needs to be filled with modified nanosilicon to enhance its reinforcement performance. Controlling the amount of nanosilicon used can increase properties such as hardness, temperature resistance, wear resistance, insulation, and dielectric properties.
In coatings: Nano silicon micro powder increases substrate adhesion and film hardness in coatings, paints, primers, and topcoats, preventing surface warping, enhancing corrosion resistance, penetration resistance, self-cleaning, high-temperature resistance, waterproofing, UV resistance, scratch resistance, and other effects. After filling, it can be suspended in the paint film for a long time without affecting transparency, preventing the paint from turning yellow.
Ceramic field: In concrete and refractory materials, silicon micro powder is added to special refractory materials to form a multi-layer protective layer during oxidation, which has good mechanical properties and high-temperature oxidation resistance. After adding ultrafine silicon powder to special refractory materials, their flowability, sintering ability, bonding ability, and filling porosity performance are all improved to varying degrees, improving structural density and strength, reducing material wear rate, and enhancing corrosion resistance.
Supplier
Luoyang Tongrun Nanotechnology Co, Ltd., as a global chemical material purveyor and manufacturer with over 12 years of experience, is highly trusted for providing high-quality chemicals and nanomaterials such as graphite powder, zinc sulfide, nitride powder, calcium nitride, Ca3N2, 3D printing powder, concrete foaming agent, etc.
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