Electrostatic spray coating refers to a process of spraying a protective coating on metal surfaces to avoid any contact with electrically conductive parts. It is used as a protection for electrical equipment, electronic appliances, and various other metallic items. The electrostatic spray coating is used for protection against erosion, breakage, lightning, dust, and water. It is also used in painting and other industrial processes. Spray coating is a type of paint, but not the paint itself. The coatings resist moisture and corrosion, and are also called insulating paint.
Electrostatic spray coating is very suitable for the proper coating of smaller series of higher-end items and is an easy and economical way of applying a quality protective coating. The paint is applied using a compressed air-powered spray gun. The particles of the paint are blown onto the object by a magnetic attraction force, thus creating an electrostatic charge. This charge keeps the charged particles stuck to the object they are directed at.
Electrostatic spray coatings are also known as liquid coatings or sheet metal coatings. These types of coatings have high resistance to static charge and conductivity and provide a smooth glossy finish. It is important to note that electrostatic spray coating cannot be applied on solid materials, since it creates a physical barrier between the coating and the underlying material. For example, it is not possible to apply a liquid electrostatic spray coating on aluminum foils.
The paint is a liquid that contains several thousands of tiny metallic particles. The particles are attracted to each other and the attraction keeps the particles together until it becomes a conductive layer. When the layer becomes a conductive layer, the electrons are pushed out of the material. Since the metal has a low resistivity to the electric field, the electrons flow very quickly. As a result, the coating comes into contact with an electric source such as a power wire or a grounded electrical connection.
An electrostatic spray coating can be applied to just about any surface. You can use it on doors, automobiles, kitchen cabinets, faucets, shower curtains, clothes hangers, signs, and other surfaces exposed to electricity. The coating comes in an unlimited variety of colors. You can even order your color and pattern specifically designed to meet your exact specifications. Depending on what you are trying to protect, there is a special coating available for the job. For example, you can protect wooden decks with paints that resist termite attack, protecting the wood from rotting and cracking.
Non-conductive coatings can be applied to metal surfaces as well. Non-conductive finishes are generally thinner than conductive ones. The non-conductive coating prevents static charge from building up between the metal and the surrounding environment. In some cases, non-conductive sprays come in the form of solventborne coatings.
There are other applications of electrostatic spray coatings as well. Some companies use electrostatic powder coating systems for their conveyor line systems. Electrostatic powder coatings help prevent wear and tear to the conveyor line and prevent damage to the equipment. There are also other businesses that utilize batch style electrostatic spray coatings on their conveyor lines. These coatings help to keep the conveyor line cool during operation.
It is important to find the right conductivity agent for your coating application. The right chemical match will ensure that the coating bond is strong enough to withstand the environment. Typically, a Quaternary ammonium phosphate (at) base is combined with either a binder or an epoxy. Other types of chemical bases include zinc and titanium. Some coatings do not require any additional chemicals for application. When choosing the right conductivity agent, make sure it is designed to work with the specific material being coated.