MIL-HDBK-1110
Reducer. Thinner; solvent added to reduce paint viscosity for
easier application.
Resin. Binder; nonvolatile vehicle; film-forming component of
paints.
Run.
Sag; curtain; associated with too heavy a paint film.
Rust.
Corroded iron; red iron oxide deposited on metal.
Rust Bloom.
Discoloration indicating the beginning of rusting.
Safety Valve. Pressure release valve preset to be released when
pressure exceeds a safe operating limit.
Sag.
Run in coating film; curtain.
Sand Blast. General term used to mean blast cleaning; blast
cleaning using sand as an abrasive.
Sandy Finish. A surface condition having the appearance of
sandpaper; may result from overspray or dry spray.
Saponify. Chemical reaction between some resins (e.g., oil and
alkyds) and alkaline solutions converting resin to soaps.
Saponified paint may become sticky and lose adhesion to
substrate. See also hydrolysis.
Scale. Heavy layer of iron oxide on surface of steel, could be
rust or mill scale; see also mill scale.
Scaling.
Process of removing scale.
Seal Coating. Coating used to prevent excessive absorption of
the first coat of paint by the substrate; a primer.
Sealer. A low viscosity (thin) liquid sometimes applied to wood,
plaster, gypsum board, concrete, or masonry to reduce
permeability.
SEM.
Scanning electron microscope.
Settling.
Caking of paint pigments in wet paint; sediment.
Sheen. Appearance characteristic of dry film in which film
appears flat when viewed at an angle near to perpendicular and
glossy when viewed at an angle near to grazing, such as 85
degrees.
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