Self-Bonding Coatings

Definition - What does Self-Bonding Coatings mean?

Self-bonding coatings are a coating type that is always utilized as a top layer. Such material allows manufacturers to wind all electrical components without the need to undergo impregnation. This coating is typically comprised of nonstick polymers.

The application of self-bonding coatings, especially those that are polymer based, can effectively reduce staining that occurs in restorative resins without the need to perform intensive brushing procedures.

Corrosionpedia explains Self-Bonding Coatings

The materials used in self-bonding coatings are uniquely fabricated for use on surface treatments. Applying this kind of coating can help in resisting damage and wear caused by chemicals, pressure as well as temperature. Almost all self-bonding coatings also possess water-repellent capabilities, making them an ideal top coat for various industrial components.

This coating type adheres strongly to surfaces with the least possibility of migrating. The thinner the application of coating, the better it works. It works in two ways, according to the surface condition:

  • Bonding to the substrate with the reactive component
  • Providing protection through its inert surface

When properly applied, self-bonding coatings can offer a high level of protection to substrates, which in turn results in no remarkable changes within the surface topography and dimensions of the coated material.

It is also extensively used in reducing wear and friction. It can give lubrication to all coated surfaces, thus decreasing the existing surface friction, leading to a nonstick surface. It can increase the lifespan of treated parts, especially those in contact with each other.

Self-bonding coatings can give the best protection on molds. It can shield these types of materials from:

  • Bases
  • Acids
  • Detergents
  • Other solvents

The nonstick surface finish allows several releases with no need to re-apply. If the mold has separated, release agents stay on the mold and transfer does not occur to finished areas. Since there is no transfer, migration and contamination is not likely.

The degree of protection provided by this type of coating relies on certain factors such as:

  • Stable substrate that can withstand environmental stresses
  • Smooth surface that can prevent foiling materials' retention
  • Surface that is non-reactive to vapor or gas

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