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. (DePo)


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    Titel :

    High solids coating system


    Weitere Titelangaben:

    Beschichtungssystem mit hohem Anteil an Feststoffen


    Beteiligte:
    McKay, G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1979


    Format / Umfang :

    95 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch




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