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Electrostatic coating is a manufacturing process that employs charged particles to more efficiently paint a workpiece. Paint, in the form of either powdered particles or atomized liquid, is initially projected towards a conductive workpiece using normal spraying methods, and is then accelerated toward the work piece by a powerful electrostatic charge.
After drying the coating is electrically conductive. Its resistance and other electrical properties vary with degree of dilution and application method. When diluted 1:1 and applied by brush its resistance is: Air-dried ~800 ohms per square Heated to 200 °C ~500 ohms per square Heated to 300 °C ~20–30 ohms per square
The aqueous process which is commonly used has less risk of fire relative to the solvent-borne coatings that they have replaced. Modern electrophoretic paint products are significantly more environmentally friendly than many other painting technologies. Thick, complex ceramic pieces have been made in several research laboratories.
Coatings of moderate thickness 1.8 μm to 25 μm (0.00007" to 0.001") [16] are known as Type II in North America, as named by MIL-A-8625, while coatings thicker than 25 μm (0.001") are known as Type III, hard-coat, hard anodizing, or engineered anodizing. Very thin coatings similar to those produced by chromic anodizing are known as Type IIB.
varnishes, paints, glues, such as Bare Conductive's Electric Paint, which can be used as a painted resistor element, a capacitive electrode, or as a conductor in designs that tolerate high resistivity when making circuits, as well as being painted onto gloves to allow people to use touchscreens in cold weather.
One part epoxy coatings are formulated as an emulsion in water, and can be cleaned up without solvents. Epoxy coatings are often used in industrial and automotive applications since they are more heat resistant than latex-based and alkyd-based paints. Epoxy paints tend to deteriorate, known as "chalking out", due to UV exposure. [41]
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