Accession Number : ADA325814

Title :   Characterization of Newly Developed Conductive Composites.

Descriptive Note : Final rept.,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIRCRAFT AND CREW SYSTEMS TECHNOLO GY DIRECTORATE

Personal Author(s) : Buckley, L. J. ; Shaffer, I. ; Trabocco, R.

PDF Url : ADA325814

Report Date : MAR 1984

Pagination or Media Count : 34

Abstract : Conductive composites consisting of various thermoplastics filled with conductive chopped fibers have been studied. The thermoplastics chosen were polyphenylene sulfide (PPS), polyetherimide (PEI), polyphenylene oxide (PPO), polyamide (Nylon), polycarbonate (PC), and liquid crystalline polyester (LCP). The chopped fibers included graphite (Gr), stainless steel (SS), aluminum flake (Al Fl), and nickel coated graphite (NiGr). Drop weight impact and tensile properties were determined. The effect of fiber loading and type on specific mechanical properties was determined. Photomicroscopy and scanning electron microscopy were performed on several composites noting fiber distribution, orientation and fracture morphology. A laser diffraction technique was used to determine the degree of orientation. Electrical conductivities (DC Resistance Method) were obtained for various samples. Physical properties such as water absorption, water vapor transmission, and chemical resistance have also been determined.

Descriptors :   *TENSILE STRENGTH, *SCANNING ELECTRON MICROSCOPES, *COMPOSITE MATERIALS, *CARBON FIBERS, *ELECTRICAL CONDUCTIVITY, *THERMOPLASTIC RESINS, *WEIGHT REDUCTION, MECHANICAL PROPERTIES, NYLON, MORPHOLOGY, STAINLESS STEEL, GRAPHITE, FRACTURE(MECHANICS), LIQUID CRYSTALS, OXIDES, ALUMINUM, NICKEL, POLYCARBONATES, SULFIDES, POLYESTER PLASTICS, WATER VAPOR, IMIDES, POLYETHERS, POLYPHENYLENES, MOISTUREPROOFING.

Subject Categories : Laminates and Composite Materials
      Electricity and Magnetism
      Mechanics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE