Variation of the Mechanical Properties of HTPB PBX's

Abstract

Several compositions of HTPB based RDX-PBXs with TMHD were mixed. The compositions were tested in the SCB-test, the Friability test, the GAP-test and in the uni-axial tensile strength test. The results have been compared with a standard TNO-PML PBX RU81. No changes in sensibility in the SCB and GAP-test were noticed. The new compositions are stronger and have a higher E-modulus. At room temperature and 60 deg C the maximum strain has improved. At -40 deg C the strain is very low and also much lower than the reference material. However, the improved mechanical properties at room temperature have their influence in the Friability test. The pressure derivative in the closed vessel test were 2.3 and 5.8 MPa/ms at projectile velocity of about 150m/s. These values are much better than with a comparable HTPB-based PBX with a derivative of 7.68 at 100 m/s. The combination of the ingredients is not yet optimal and more research must be carried out to improve the mechanical properties of these new HTPB/TMHD/IPDI based PBXs. Also the use of a bonding agent could improve these properties.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1997
Accession Number
ADA340910

Entities

People

  • J. H. Scholtes

Organizations

  • Prins Maurits Laboratorium TNO

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ammunition
  • Classification
  • Explosives
  • Insensitive Explosives
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Munitions
  • New York
  • Projectiles
  • Propellants
  • Rocket Engines
  • Rocket Propellants
  • Standards
  • Strain Hardening
  • Sympathetic Detonations
  • Tensile Strength

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials
  • Rocket Propulsion.