Evaluation of innovative painting processes. Final technical report, October 1990-October 1991

Technical Report · Wed Mar 31 23:00:00 EST 1993

OSTI ID:7203917

Pandalai, K; Pandalai, G

This report details an evaluation of two novel spray painting techniques that may decrease volatile organic compound (VOC) emissions associated with application of surface coatings. one technique uses supercritical carbon dioxide as a solvent and a propellant to deliver and disperse the coating. The second system, called the Ultra-Low Volume (ULV) process utilizes pressurized nitrogen to deliver a constant-flow, very soft spray through the gun nozzle. The CO2 system encountered problems in delivering urethane topcoats and was eliminated from field testing. Data were gathered on VOC emissions, paint consumption, coat thickness, and workplace exposure during application of an epoxy primer and a silica-filled chemical resistant (CARC) topcoat to a fleet of trucks at Warner Robins AFB GA. The ULV process was compared to a conventional air atomizing gun system. Results revealed a 50-percent decrease in VOC emissions, and a 30-percent decrease in paint consumption at no increase in exposure when using the ULV system. Spray painting, Transfer efficiency, Constant-pressure airless spray gun, Air pollution, VOCs, Pollution prevention.

• Research Organization: Pandalai Coatings Co., Brackenridge, PA (United States)
• OSTI ID: 7203917
• Report Number(s): AD-A-279762/9/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION ABATEMENT
AROMATICS
ATOMIZATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COATINGS
DOCUMENT TYPES
ELEMENTS
FIELD TESTS
GASEOUS WASTES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PAINTS
POLLUTION ABATEMENT
PROGRESS REPORT
TESTING
WASTES