California Department of Transportation
 

REFERENCES and TERMINOLOGY

References -

  • "National Volatile Organic Compound Emission Standards for Automobile Refinish Coatings", from the Clean Air Act (Federal law, September 11, 1998, http://www.epa.gov/ttn)
  • South Coast AQMD "Rule 1151: Motor Vehicle and Mobile Equipment Non-Assembly Line Coating Operations".
  • "Method for Evaluating the Paintable Characteristics of Automotive Sealers", SAE J1800 APR87
  • Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Section 5.7
  • Title 17 California Code of Regulations, section 93112, "Hexavalent Chromium and Cadmium Airborne Toxic Control Measure - Motor Vehicle and Mobile Equipment Coatings

Terminology -

Adhesion : The ability of dry paint to attach to and remain fixed on the surface without blistering, flaking, cracking or being removed by tape.
Catalyst : a substance that initiates or accelerates a chemical reaction without itself being affected
Gloss : The luster or shininess of paints and coatings. Trade practice recognizes the following gloss levels, in increasing order of gloss: flat (or matte)-- practically free from sheen, even when viewed from oblique angles (usually less than 15 on 60° meter); eggshell-- usually 20-35 on 60° meter; semi-gloss--usually 35-70 on 60° meter; full-gloss--smooth and almost mirror-like surface when viewed from all angles, usually above 70 on 60° meter.
Gloss Meter : A device for measuring the light reflectance of coatings. Trade practice normally measures a scale from 0 to 100 at 60° and at 20°.
High Solids - paints containing 60% to 80% solids. Uses less solvents. Usually must be applied hot in order to have sprayable viscosity.
Lead : A toxic heavy metal, previously used as a pigment or drying agent in paints.
Orange Pea l: Wavy structures between 0.1 and 30 mm in structure size is referred to as orange peel or poor flow and leveling. These phenomena are often visually evaluated and subjective terms like degree of peel or texture are used as descriptions. Orange peel can be seen on high gloss surfaces as a wavy pattern of light and dark areas.
Paint or coating - a pigmented film forming material used for corrosion protection and/or decoration.
Primer : First complete coat of a painting system applied to a surface. Such paints are designed to provide adequate adhesion to new surfaces or are formulated to meet the special requirements of the surfaces.
Topcoat - final coat, finish coat. The actual film which meets the eye.
Undercoat - any paint film beneath the topcoat
Urethane : An important resin in the coatings industry. A true urethane coating is a two-component product that cures when an isocyanate (the catalyst) prompts a chemical reaction that unites the components.

Last Web Page Update 12/02/04