A Statistical Approach for the Evaluation and Selection of Medium Density Polyethylenes for Chemical Storage Canisters.

Abstract

Several specially compounded and commercially available olefinic materials were investigated in the presence of an organic liquid, Igepal CO-630, to test their environmental stress-crack (ESC) resistance (ASTM D1693). Chemical and physical characterization techniques were used to evaluate the proposed alternate medium density polyethylenes (MDPE) and antioxidants. Molecular weight, amount of antioxidant consumed during processing, and oxidation induction times were determined using size exclusion chromatography (SEC), reverse phase high performance liquid chromatography (RPHPLC), and differential scanning calorimetry (DSC), respectively. In addition, mechanical properties and strengths (ASTM D638) were determined in an attempt to obtain a quicker, more reproducible test. These properties were compared to a baseline material. Results showed that the commercial polyethylene, the baseline material, had the higher resistance to ESC. jg p.3

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1995
Accession Number
ADA297107

Entities

People

  • David Dunn
  • David M. Spagnuolo
  • Peter G. Dehmer
  • Stephen P. Petrie

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alkenes
  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Dielectric Polymers
  • Environmental Stress Cracking
  • Experimental Design
  • Information Processing
  • Liquid Chromatography
  • Materials
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Physical Properties
  • Polymers
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Mathematics or Statistics
  • Petroleum Engineering
  • Polymer Science and Engineering.