Accession Number : AD0013772


Title :   POST-MOLDING SHRINKAGE CHARACTERISTICS OF SOME THERMOSETTING PLASTIC MOLDING MATERIALS


Descriptive Note : Technical rept.


Corporate Author : AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH MATERIALS LAB


Personal Author(s) : Marshall, Steven T ; Ellis, Charles P , Jr


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/013772.pdf


Report Date : May 1953


Pagination or Media Count : 32


Abstract : The dimensional stability as to post-molding shrinkage of commercially available melamine, phenolic and polyester plastic molding materials was investigated by means of accelerated conditioning procedures which produced shrinkage corresponding to that obtained on parts in service in long-time aging. It is concluded that of the materials tested, the polyester mineral filled molding material demonstrated the greatest degree of dimensional stability.


Descriptors :   *PLASTICS , *MOLDING MATERIALS , PHYSICAL PROPERTIES , THERMAL EXPANSION , MOLDINGS , THERMOSETTING PLASTICS , SHRINKAGE


Subject Categories : Plastics
      Adhesives, Seals and Binders


Distribution Statement : APPROVED FOR PUBLIC RELEASE