NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Testing of Candidate Polymeric Materials for Compatibility with Pure Alternate Pretreat as Part of the Universal Waste Management System (UWMS)The Universal Waste Management System (UWMS) is an improved Waste Collection System for astronauts living and working in low Earth orbit spacecraft. Polymeric materials used in water recovery on International Space Station are regularly exposed to phosphoric acid-treated 'pretreated' urine. Polymeric materials used in UWMS are not only exposed to pretreated urine, but also to concentrated phosphoric acid with oxidizer before dilution known as 'pure pretreat.' Samples of five different polymeric materials immersed in pure pretreat for 1 year were tested for liquid compatibility by measuring changes in storage modulus with a dynamic mechanical analyzer.
Document ID
20180002402
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Publication (TP)
Authors
Wingard, C. D.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
April 11, 2018
Publication Date
March 1, 2018
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA/TP-2018-219853
M-1455
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available