Professional Application Guide - Alexseal

GlossaryDew Point:Given a constant pressure, the temperature at which water vapor condenses out of theair.DIN Cup:Viscosity measurement based upon the time it takes a liquid to travel through a 4 mmhole.Dry Film Thickness (DFT):The depth or thickness of a coating on a surface after the coating has dried; usuallymeasured in microns or mils.Dry Spray:Paint that loses an excessive amount of solvent as it passes through the air, causing itto flow poorly or not all over the surface to which it is being applied.Drying Time:Duration of time between a paint application and when it reaches a cured state.Dry to Tape/Mask:Time between a paint application and when it can be taped or masked without damagingthe surface.Dry to Paint:Time between a paint application and when an additional coat can be applied withadequate adhesion.Dry to Touch:Time between a paint application and when the coating is tack-free or safe to touch.Enamel:Paint that is characterized by its ability to form a smooth surface via a chemicalreaction during the curing process. Originally associated with a high gloss, but may alsoinclude lower degrees of gloss. Paint that does not contain lacquer.Epoxy:An adhesive, plastic, paint, or other material made from a class of syntheticthermosetting polymers containing epoxide, Known for strong adhesion properties,increased mechanical strength, and resistance to solvents, and corrosive agents.Fairing:The process of filling and removing material on a substrate to achieve a linear, uniformsurface.Fairing Compound:Material used to fill depressions in a substrate. Binds to the substrate while beingconducive to sanding, surfacing and finishing to achieve a smooth surface.Film Thickness Gauge:A precise measuring device that indicates the thickness of a layer of paint or material.GlossaryFinish Coat:Also see Topcoat – the protective, final coating of paint with properties that are resistantto environmental factors and protects the substrate or underlying surface.Fluid Nozzle:A precise valve at the output end of a spray gun that causes paint and solvent to breakinto small pieces or droplets that will attach to a surface.Gelcoat:Material usually applied to fiberglass structure in a mold which creates a finish on thevisible side of the material. The most common gelcoats are unsaturated polyurethaneresin based.Gravity Gun:Spray gun that feeds paint to the nozzle from a reservoir located above the spray head.Grinding:Process using a powered abrasive device for the removal of material that cannot beremoved with solvent or sanding.Grit:Measuring standard for the abrasive quality of sandpaper. As grit numbers increase, thesize of the abrasive decreases. The letter “P” is used to identify a paper that has beentested to ensure consistency.GRP:Glass Reinforced Plastic, general term that covers all types of fiberglass substrates.Guide Coat:A temporary paint, dye or chalk material used to mark areas of a surface in the sandingprocess. As higher relief areas are sanded, the guide coat is removed.Incompatibility:When a coating does not possess the chemical or mechanical characteristics to bind toanother surface or coating.Induction:Time required for base and converter compounds to cross-link or bind chemically.Induction time before application is essential for coatings to possess proper adhesionqualities.Inlet Pressure:Air pressure measured at the spray gun. Best monitored and controlled with a regulator.Inter-coat Adhesion:The adhesion or bond that exists between two separate layers of paint.Isocyanate:Hydroxyl chemical group that reacts to form a polymer. Used in polyurethane topcoatconverters.138ALEXSEAL ® Professional Application Guide version 0.4.3ALEXSEAL.COM > Europe: +49 0 40 75 10 30 > North America: +1 843 654 7755139