Mechanical Behavior of PMMA-Impregnated Silica Gels

Abstract

Silica xerogels have been prepared from tetraethylorthosilicate with 50 volume percent open porosity. Methyl methacrylate monomer has been introduced into xerogel monoliths and polymerized with ultraviolet radiation. The fully infiltrated silica gel - PMMA composite has a bulk density of about 1.6 g/cm cubed. The resulting composite is light-weight and optically transparent. Elastic constants have been determined with ultrasonics. Flexure strengths have been measured in 4-point bending. The flexure strength of the composite is over 100 MPa in comparison to 20 MPa for the silica xerogel. The composite is designed for use at or below room temperature.

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Document Details

Document Type
Technical Report
Publication Date
Feb 27, 1989
Accession Number
ADA205975

Entities

People

  • B. Abramoff
  • L. C. Klein

Organizations

  • Rutgers University–New Brunswick

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Adsorption
  • Alcohols
  • Composite Materials
  • Contracts
  • Elastic Properties
  • Glass Transition Temperature
  • Impregnation
  • Materials
  • Materials Testing
  • Mechanical Properties
  • Military Research
  • Modulus Of Elasticity
  • New Jersey
  • Organic Compounds
  • Shear Modulus
  • Silica Gels
  • Universities

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.
  • Reinforced Composite Materials