Accession Number : ADA304551

Title :   Evaluation of Syntactic Core Materials.

Descriptive Note : Final rept. 1 Apr 78-30 Jun 79,

Corporate Author : MCDONNELL AIRCRAFT CORP ST LOUIS MO

Personal Author(s) : Grimm, T. C.

PDF Url : ADA304551

Report Date : SEP 1979

Pagination or Media Count : 76

Abstract : Three syntactic core materials were evaluated: (1) HX501 epoxy/A24X glass microballoons, (2) HX501/Carbo-Spheres, and (3) HX592 bis-maleimide/A24X. After optimum B-staging and cure cycles were developed, the following core properties were determined: (1) density, (2) saturation moisture content (140 deg F/92% RH), (3) compressive strength, and (4) effect of thermal cycling on microstructure and water pickup. Sandwiched core panels were fabricated by cocuring B-staged core sheets between two face sheets of 3-ply graphite/epoxy.

Descriptors :   *LAMINATES, *EPOXY COMPOSITES, *EPOXY RESINS, *HONEYCOMB CORES, DENSITY, TENSILE STRENGTH, MICROSTRUCTURE, PANELS, MATRIX MATERIALS, SPHERES, CARBON, MOISTURE CONTENT, IMPACT STRENGTH, COMPRESSIVE STRENGTH, THERMAL STRESSES, CYCLIC LOADS, SANDWICH CONSTRUCTION, SANDWICH PANELS, SHEAR STRENGTH, BALLOONS.

Subject Categories : Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE