Estimation of Shelf Life of Unstabilized Polyolefins from Thermal Oxidation Data

Abstract

Utilizing carbonyl formation data previously obtained during the thermal oxidation of unstabilized atactic polypropylene, unstabilized isotactic polypropylene and unstabilized atactic polybutene-1 along with a semi-empirical expression, it was possible to extrapolate and obtain arbitrary induction times at relatively low temperatures. Values of induction times thus obtained were correlated with changes in physical properties, i.e., intrinsic viscosity and the product of ultimate elongation and ultimate tensile strength (a product which is often referred to as the impact index).

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0748827

Entities

People

  • Leo Reich

Organizations

  • Picatinny Arsenal

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Heat Of Activation
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Military Research
  • Munitions
  • New Jersey
  • Ordnance Laboratories
  • Oxidation
  • Physical Properties
  • Plastics
  • Security
  • Shelf Life
  • Tensile Strength
  • Viscosity

Readers

  • Polymer Science and Engineering.