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Abrasive
A course material used in blast cleaning, such as sand, steel shot, glass beads or plastics.
Absorption
Process of soaking up or assimilation of one substance by another.
AC (Current)
Current Alternating electrical current.
Accelerator
Material that accelerates the curing or crosslinking, a mixture of crosslinkers or resins. Catalyst.
Acicular Pigments
Pigments whose particles are needle shaped.
Acrylic
A coating powder with a significant content of a polymer containing short chain esters of various acrylic monomers.
Acrylic Resin
A clear resin derived from polymerised esters of various acrylic monomers. Acrylics are used for automotive topcoats and in other applications where resistance to chalking with exposure to sunlight is important
Additive Chemicals
Added to a powder coating to improve some properties, such as flow, gloss and texture control.
Adhesion
Bonding strength. Molecular attraction to the substrate surface to which a powder coating is applied. A condition where one material is attached to another by means of surface attraction.Adhesion is affected by the condition of the surface to be coated, by the closeness of contact and molecular forces. The surface being coated should allow a certain amount of penetration, be chemically clean, be hard, not too smooth and non-porous, to achieve good adhesion.
Adsorption
Process of attraction to a surface.
Aerosol
Dispersing of a liquid into a gas, for spraying, often used for touch-up paints.
Agglomeration
A clump of powder particles bound loosely together into clusters containing trapped air.
Air Classification
Device used in powder coating manufacture to aid in particle size management.
Air, Compressed
Air at any pressure greater than atmospheric pressure.
Air Hose
A section of non-metallic tubing used to deliver compressed air for paint or powder application.
Air Receivers
Tanks into which compressed air is stored from the air compressor. Receivers help eliminate pulsing in the discharge lines and also act as storage capacity during intervals when demand exceeds the capacity of the compressor.
Air Valve
Control valve in an air system for setting volume and pressure.
Air Velocity
Measurement of air speed, typically in feet or meters per minute.
Air Volume
Measurement of air volume, in cubic feet or meters per minute.
Alkali
Caustic, inorganic substances that share the characteristic of being strongly basic (high pH)(examples are Sodium Hydroxide or Caustic Soda).
Ambient
Surrounding environmental conditions.
Amides
Organic compounds. A structure sometimes used in curing agents in Epoxy powder coatings.
Amp (Ampere)
A unit of electrical current flow. The current produced by one volt applied across a resistance of one ohm.
Anti Foam agent
Material used in pre-treatment systems to reduce the tendency of the chemicals to foam.
Anti oxidant
An organic compound added to coatings to retard oxidation and deterioration.
Application
Process of applying a coating to a substrate.
Aqueous
A water based material.
Arcing
A discharge of built up electrical charge, often forming a spark to a point of lower charge or earth.
ASTM
The American Society for Testing Materials
Attachment
Retaining foreign molecules on the surface of a substance.
Atom
The smallest unit of an element that still possesses the properties of that element.
Atomisation
The distribution of powder particles with air to form a fine pattern during the spraying application process.
Atomising Air
Air injected into the powder path to atomise it into a pattern.
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