Accession Number:

ADA297107

Title:

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

Descriptive Note:

Corporate Author:

ARMY RESEARCH LAB WATERTOWN MA MATERIALS DIRECTORATE

Report Date:

1995-06-01

Pagination or Media Count:

76.0

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

Subject Categories:

  • Polymer Chemistry
  • Physical Chemistry
  • Containers and Packaging
  • Logistics, Military Facilities and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE