IMPROVEMENT OF MECHANICAL AND THERMOMECHANICAL PROPERTIES OF PLASTICS BY THE USE OF ACTIVE FILLERS

Abstract

A method of introducing active fillers, such as bentones, into polymers to improve mechanical and thermomechanical properties is reported. Incorporation of a filler suspended in a solvent into a polymer solution is described. The effect produced by active (i.e., increasing mechanical strength of the polymer by orienting the molecules) and inactive fillers were compared. Hardness testing, thermal analysis, plotting of thermomechanical curves, and other physical tests indicated definite improvement of mechanical and thermomechanical properties of polymethylmethacrylate filled with active fillers. Among other improvements in physical properties, the viscousflow point and the thermal-decomposition point of specimens were approximately 50 to 20 degrees higher, respectively, than the corresponding points of the unfilled polymer. Polymethylmethacrylate filled with chalk displayed some degradation in physical properties. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1961
Accession Number
AD0255786

Entities

Organizations

  • Library of Congress

Tags

DTIC Thesaurus Topics

  • Decomposition
  • Degradation
  • Hardness
  • Molecules
  • Physical Properties
  • Plastics
  • Plotting
  • Polymers
  • Thermal Analysis
  • Thermodynamic Properties

Fields of Study

  • Materials science

Readers

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