High Solids Coating System

The goal of this program is the development of a 65% volume solids, sprayable (airless electrostatic method), polyurethane exterior aircraft coating meeting MIL-C-83286 performance specifications. A high solids coating can significantly reduce solvent emissions and help the Air Force meet EPA/OSHA r...

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Bibliographische Detailangaben
1. Verfasser:	McKay, Gretchen
Format:	Report
Sprache:	eng
Schlagworte:	COATINGS Coatings, Colorants and Finishes ELECTROSTATICS EMISSION ENVIRONMENTS FLUIDS HIGH SOLIDS Inorganic Chemistry Mfg & Industrial Eng & Control of Product Sys Organic Chemistry OXAZOLIDINES PE62102F POLLUTION POLYESTER POLYOLS POLYISOCYANATES POTTING COMPOUNDS RHEOGRAM RHEOLOGY SHELF LIFE SOLIDS SOLVENTS SPRAYERS TITANIUM DIOXIDE VISCOSITY WUAFML24220106
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Beschreibung
Zusammenfassung:	The goal of this program is the development of a 65% volume solids, sprayable (airless electrostatic method), polyurethane exterior aircraft coating meeting MIL-C-83286 performance specifications. A high solids coating can significantly reduce solvent emissions and help the Air Force meet EPA/OSHA requirements for reduced environmental pollution and increased worked safety. One formulation consisting of a combination of Acryloid AU-568 (oxazolidine), NIAX PCP-0300 (polyol), and Desmodur N-100 (polyisocyanate) exhibited performance properties close to MIL-C-83286. Additional effort is required to simultaneously maximize coating flexibility and solvent (aircraft fluid) resistance. The pot life of the mixed two-package system and the final spray viscosity also must be improved. Potential polyol and polyisocyanate candidates can be successfully screened using concentration-viscosity diagrams. The effects of solvent on solution rheology were greater than expected.