Optimization of the Thermomechanical Behavior of a Poly(Chromium III Trisphosphinate).

Abstract

A two-component reactive system consisting of a poly(chromium 3 bisphosphinate) and dioctyl phosphinic acid reacts to form a poly(chromium 3 trisphosphinate). Extensive thermomechanical hysteresis is displayed by the system throughout the temperature range -180C to >300C. Thermal pretreatment to about 400C (the limit of thermal stability) eliminated these instabilities. These results correlate with the reported brittle and tough character of films of the poly(chromium 3 bisphosphinate) and poly(chromium 3 trisphosphinate) respectively. Regardless of thermal history (between 200C and 400C), the polymer system displayed three major transition regions: one the glass transition centered at about 0C, another centered at about 230C, and a third at about -200C. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1971
Accession Number
AD0731743

Entities

People

  • John K. Gillham

Organizations

  • Princeton University

Tags

DTIC Thesaurus Topics

  • Chromium
  • Hysteresis
  • Instability
  • Optimization
  • Organophosphorus Compounds
  • Personality
  • Thermal Stability
  • Transitions

Readers

  • Aerospace Research.
  • Polymer Science and Engineering.
  • Psychological Intervention/Treatment for Stress, Anxiety, PTSD, and Related Emotional and Cognitive Health Symptoms.