Nanocoatings and Hybrid Nanocoatings
Nanocoatings are ultra thin layers or chemical structures built up on surfaces by a variety of methods. Typically, nanocoatings are used to impart a particular chemical or physical function to a surface. For example, it may impart hydrophobic and oleophobic properties, thus improving corrosion resistance and enhancing insulative or conductive properties.
Nanocoatings can be applied to a wide variety of substrates, for example, metals, glass, ceramics, polymers, and even other nanocoatings.
Technically, a nanocoating is a coating measured on the nanoscale. Nanocoatings have been defined as coatings that are no more than 1-100 nanometers thick or 0.0000000394 – 0.000000394 inches. As a comparison, the typical automotive paint is approximately 0.005 inch thick. This is approximately 125 microns or 125,000 nanometers. Nanocoatings can be structures one molecule thick or can be built up from multiple molecular layers. Some nanocoatings are polymers, either polymerized in-situ or prior to application. But at 1-100 micron thickness, nanocoatings do not alter the topography of a surface. In other words, they do not fill in defects and smooth out the surface like a paint. In addition, such a thin coating may not stand up to abrasion and wear.
Nanocoatings are used across virtually all industries and fields, like electronics, medical, industrial and aerospace. Today, researchers are using nanocoatings to solve many common problems and challenges.
Historically, application of nanocoatings required specialized equipment and complex procedures, such as, chemical vapor deposition or plasma spray techniques. However, new developments in chemistry and coating technology are greatly expanding the accessibility of nanocoatings. Consumers are now starting to see nanocoating products that can be easily applied by conventional means.
NanoSlic is a ceramic coating that is both hydrophobic and oleophobic. NanoSlic products are designed for commercial and industrial use. Is NanoSlic a true nanocoating according to the above definition? No. When applied by spraying, wiping or dipping the entire NanoSlic coating is typically 1-4 microns or 1,000 – 4,000 nanometers thick. But NanoSlic has three layers that benefit from nanocoating technology. At the substrate interface, NanoSlic has a nanometer thick layer that chemically binds to the substrate. Above that is a ceramic layer that adds hardness, chemical resistance, electrical insulation, corrosion and scratch resistance. The top surface is another nanocoating that imparts hydrophobicity, oleophobicity, and chemical resistance. NanoSlic can be defined as a “hybrid” coating, combining the benefits of a ceramic coating and a nanocoating.
NanoSlic’s unique structure and chemical composition prevent normal degradation when applied to many surfaces. This means greater efficiency, longer life and ultimately significant cost savings. For example, automotive wheels treated with NanoSlic are practically self-cleaning – water, mud, snow, oils, road debris do not stick to the coating due to its hydrophobicity and oleophobicity. Corrosion is inhibited. NanoSlic not only adds physically protection to automotive components but also contributes to a cleaner cosmetic appearance.
How Nanoslic Works
NanoSlic is largely composed of silica, structured with silica bonds. As such, NanoSlic materials are inherently capable of maintaining properties at temperatures well beyond non-ceramic polymers. NanoSlic coatings are resistant to most solvents and will be unaffected by a wide range in pH. Because 9H hardness is achieved in most NanoSlic formulations, scratch resistance is improved. By incorporating specific functional groups to the polymer, various properties can be achieved including ambient temperature curing, heat-induced crosslinking and other physical properties. Interesting and useful surface effects can be achieved such as NanoSlic’s characteristic hydrophobicity and oleophobicity.
Low surface energy and ceramic structure make NanoSlic a unique nanocoating. NanoSlic is a revolutionary coating technology that offers many of the benefits of “advanced ceramics” but does not require a high cost, multi-step process that includes “firing.” NanoSlic can be applied to a wide variety of surfaces. The required thickness of the coating will depend on the application and the desired result. Generally, the coating thickness with 1 – 4 microns (µ.) NanoSlic protects and enhances surfaces of metals, glass, ceramics, polymers and coatings and many plastics. It is scratch resistant and creates a surface that is easy to clean. Curing takes place at room temperature or can be accelerated with heat.
Applications Include (but are not limited to):
- Automotive Surfaces
- Industrial Applications
Available in several grades to suit the application.
- NS 110 – Standard NanoSlic Performance
- NS 200 – Improved Flexibility
- NS 220 – NS 200 + Blue Fluorescing Dye
- Contact Angle: 107°/water and 64°/n-hexadecane
- Sliding Angle: 9.1o /water 1.4o /IPA (NS110)
- Temperature Resistance: 350o F Continuous/450o F Intermittent
- Pencil Hardness: 9H
- Cross-Hatch Adhesion: 5B
How to use NanoSlic
While most nanocoatings and ceramic coatings require extremely high temperatures and advanced systems to apply, NanoSlic brings these high-performing protective coatings into an easy-to-use commercial format.
As with any coating, proper surface preparation is critical to achieve superior NanioSlic protection. For bare metallic surfaces, we highly recommend using our NS PreClean solution. Spray the surface with NS 50 and wipe with a lint free wiper. Then let it act for 60 seconds. Spray again and rinse well with distilled or DI water for 60 seconds. Allow the surface to dry in its own or dry the surface with a lint free wiper or use clean, dry air. The surface must be completely dry prior to coating. Ensure no dust, lint, or other contamination remains on the surface prior to application of the coating.
Glass and ceramic surfaces should be cleaned with an alcohol, preferably isopropyl alcohol. Polymers, plastics and coatings, especially those with a glossy surface may need to be lightly abraded prior to application of NanoSlic. NanoSlic coating can be applied through spraying, dip coating or wiping with a lint free cloth – depending on specific application needs. Application should be done in a dust free area. When coating, strive for consistent thickness and streak free layers. NanoSlic will obtain properties in the range of 0.2-4.0 microns dry film.
NanoSlic coatings chemically bond to non-porous surfaces like metal, ceramics, glass and many polymers and coatings. Currently, we offer sample kits, so customers can begin seeing the benefits of the most advanced nanocoating technology available. Purchase your sample kit today!