Accession Number : ADA508596

Title :   Foundation Elements for Naval Low-Rise Buildings

Descriptive Note : Final rept.

Corporate Author : WASHINGTON STATE UNIV PULLMAN WOOD MATERIALS AND ENGINEERING LAB

Personal Author(s) : Hatch, Mark ; Wolcott, Michael P

Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a508596.pdf

Report Date : Oct 2009

Pagination or Media Count : 201

Abstract : Natural fiber composites are commonly used in residential decking, siding, and fencing applications, but their use in high-load structural applications has been limited by their low strength performance. However, wood-plastic composites (WPCs) consisting of nylon 12 and thermoplastic epoxy resin (TPER) exhibit excellent mechanical performance. This study evaluated the extrusion parameters for each composite including: barrel/die temperature profile, lubricant compatibility, wood flour (WF) content, and WF moisture content (MC). Increases in strength and modulus of both composites indicated significant adhesion between polymer and wood components. These composites show promise for use in structural applications currently lacking WPC presence.

Descriptors :   *BUILDINGS , *NYLON , *STRUCTURAL PROPERTIES , *FIBER REINFORCED COMPOSITES , *EPOXY RESINS , *FOUNDATIONS(STRUCTURES) , *THERMOPLASTIC RESINS , HIGH STRENGTH , LOW STRENGTH , LUBRICANTS , WOOD , FENCES , MOISTURE CONTENT , COMPATIBILITY , EXTRUSION , ADHESION , POLYMERS , INJECTION MOLDING , MECHANICAL PROPERTIES , PARAMETERS

Subject Categories : Laminates and Composite Materials
      Wood, Paper and Related Forestry Products
      Structural Engineering and Building Technology
      Logistics, Military Facilities and Supplies
      Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE