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Most coatings have four basic components. These are the resin, solvent, pigment and additive systems [5] but the resin or binder is the key ingredient. Continuing environmental legislation in many countries along with geopolitics such as oil production are ensuring that chemists are increasingly turning to waterborne technology for paint/coatings and since resins or binders are the most ...
The coating can be sprayed onto objects to make them waterproof. The spray is anti-corrosive and anti-icing; has cleaning capabilities; and can be used to protect circuits and grids. Superhydrophobic coatings have important applications in maritime industry. They can yield skin friction drag reduction for ship hulls, thus increasing fuel ...
Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water. This saturation, called 'wetting out,' can reduce the garment's breathability (moisture transport through the breathable membrane) and let water through.
However, vapor water molecules are many times smaller than the liquid state and can pass through these “micro pores”. Chemical: Hydrophilic (water loving) / non-porous lamination or coating move moisture by chemical diffusion. The water molecule is positively charged and the hydrophilic PU is negatively charged, attracting the water through ...
This method is based on a special nanotechnology coating a thousand times thinner than a human hair which protects electronic equipment from damage due to the penetration of water. Several manufacturers use the nano coating method on their smartphones, tablets, and digital cameras. A water droplet on a superhydrophobic surface
An insulation coating can withstand a stronger electric voltage than air, particularly at high altitudes. Excluding Parylene , most organic coatings are easily penetrated by water molecules. A coating preserves the performance of electronics primarily by preventing contaminants that can ionize, such as salts, from reaching circuit nodes and ...
Some birds are great swimmers, due to their hydrophobic feather coating. Penguins are coated in a layer of air and can release that trapped air to accelerate rapidly when needing to jump out of the water and land on higher ground. Wearing an air coat when swimming reduces the drag and also acts as a heat insulator.
Coated fabrics can be made in a variety of ways, depending on the coating ingredients used, such as chemical and particles. Rubber, plastic, and vinyl coatings are just a few examples. [ 5 ] [ 6 ] Nanofabrics are coated with a wide range of nanoparticles to make the fabrics capable of enhanced properties such as ultrahydrophobicity , medical ...