PRELIMINARY EVALUATION OF MONSANTO VIBRATION DAMPING TREATMENT MRC-OG4

Abstract

Damping materials used in the construction of submarines and surface ships were tested. The latest treatment proposed by Monsanto, identified as MRC-OG4, is a graphite filled copolymer of vinyl-chloride and vinyl-acetate. MRC-OG4 is flame-resistant and thermoplastic. It was found that this material with 3 parts of ELA could be calendered and plied up to the desired thickness without molding. The damping characteristics of 0.57 inch thick slabs of modified MRC-OG4, bonded to 3/8 inch steel bars with an epoxy adhesive, were measured at 30 deg., 35 deg., 50 deg., 65 deg., and 80 deg. F over the frequency range of about 0.5 keps to about 13 keps. Results obtained are presented. Optimum damping was observed at about 65 deg. F. (Author, modified-PL).

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1962
Accession Number
AD0287844

Entities

People

  • B.v. Howell

Tags

DTIC Thesaurus Topics

  • Adhesives
  • Alkenes
  • Chlorides
  • Construction
  • Copolymers
  • Films
  • Frequency
  • Frequency Shift
  • Graphitic Materials
  • Materials
  • Reinforcing Materials
  • Ships
  • Specialty Uses Of Chemicals
  • Submarines
  • Test And Evaluation
  • Thickness

Fields of Study

  • Materials science

Readers

  • Marine Hydrodynamics
  • Polymer Science and Engineering.
  • Thermal Physics or Thermal Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Microelectronics - Microelectromechanical Systems