Accession Number : ADA302542

Title :   A Thermoplastic Polyimidesulfone.

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : St Clair, Terry L. ; Yamaki, David A.

PDF Url : ADA302542

Report Date : NOV 1982

Pagination or Media Count : 20

Abstract : A polymer system has been prepared which has the excellent thermoplastic properties generally associated with polysulfones, and the solvent resistance and thermal stability of aromatic polyimides. This material, with improved processability over the base polyimide, can be processed in the 260-325 deg C range in such a manner as to yield high quality, tough unfilled moldings; strong, high-temperature-resistant adhesive bonds; and well consolidated, graphite-fiber-reinforced moldings (compos- ites). The unfilled moldings have physical properties that are similar to aromatic polysulfones which demonstrates the potential as an engineering thermoplastic. The adhesive bonds exhibit excellent retention of initial strength levels even after thermal aging for 5000 hours at 232 deg C. The graphite-fiber-reinforced moldings have mechanical properties which makes this polymer attractive for the fabrication of structural composites.

Descriptors :   *POLYMERS, *THERMOPLASTIC RESINS, *POLYIMIDE RESINS, *POLYSULFONES, THERMAL PROPERTIES, MECHANICAL PROPERTIES, AGING(MATERIALS), PHYSICAL PROPERTIES, COMPOSITE MATERIALS, HIGH TEMPERATURE, RESISTANCE, FIBER REINFORCED COMPOSITES, FABRICATION, COMPOSITE STRUCTURES, THERMAL STABILITY, GRAPHITE, ENGINEERING, BONDED JOINTS, STRENGTH(GENERAL), SOLVENTS, AROMATIC COMPOUNDS, MOLDINGS, ADHESIVE BONDING.

Subject Categories : Polymer Chemistry
      Laminates and Composite Materials
      Plastics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE