Poly(acrylic acid)-poly(vinyl pyrrolidone)-thickened water/glycol de-icing fluids

Y. Wang, N. E. Hudson, R. A. Pethrick, C. J. Schaschke*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

In this study we consider the use of poly(vinyl pyrrolidone) (PVP) in conjunction with poly(acrylic acid) (PAA) as a thickener for water/glycol solutions. PAA in water/glycol formulations has wide application in the aviation industry for aircraft de-icing and prevention of ice build-up. Routinely sprayed onto the surface of wings and fuselage of aircraft in winter, they are designed to be retained on surfaces under zero shear and actively removed under high shear corresponding to take-off velocities. PAA deposited in aerodynamically quiet regions can produce gel deposits which have adverse effects on the performance of aircraft control systems. In this study we examine the rheological properties of solutions produced using a combination of PAA with PVP, with the aim of reducing the sensitivity of the solutions to added electrolytes. Various PVP-PAA formulations were examined rheologically and in a wind tunnel, across a range of sub-zero temperatures. The conclusions were that these blends can be used as alternative de-icing fluids. In these fluids, hydrogen bonding between the PVP and the PAA achieves the required level of polymer-polymer interactions to exhibit viscoplastic flow at lower electrolyte content. Gels which are formed are less stable that those formed with PAA alone.

Original languageEnglish
Pages (from-to)24-30
Number of pages7
JournalCold Regions Science and Technology
Volume101
Early online date2 Feb 2014
DOIs
Publication statusPublished - May 2014

Keywords

  • de-icing fluid
  • polymers
  • complex fluids
  • non-Newtonian fluids
  • viscosity
  • fluid mechanics

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences(all)

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