Preparation and Characterization of Low DP End-Capped Pyrrone Moldings.

Abstract

Pyrrone polymers were studied to determine their utility as structural molding resins. Because of the problems previously associated with the molding of these resins, a major portion of the work was in a novel synthesis route. This route based on the idea of making short chain fully cyclized precursor molecules which are then chain extended and the newly formed bonds cyclized during the mold cycle. The molding process was studied in considerable detail with over 175 moldings made for physical, mechanical and/or thermal characterization as well as delivery to NASA-Langley. The mechanical properties of the best moldings were exceptional in high temperature properties. Filled moldings were made with particulate fillers including colloidal silica, carbon, graphite, MoS2 powder, and industrial diamonds. Flexural tests were obtained on some of these composites.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1970
Accession Number
ADA309562

Entities

People

  • C. T. Hughes

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boiling Point
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemistry
  • Compressive Properties
  • Experimental Design
  • Failure Mode And Effect Analysis
  • Flexural Properties
  • Flexural Strength
  • High Temperature
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Particles
  • Physical Properties
  • Thermal Stability

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology
  • Reinforced Composite Materials