Two evaporative-cooling materials were studied which are (i) salt hydrates and (ii)
polyacrylic acid for the purpose showing proof of concept of being able to put
evaporative-cooling materials into a composite with the Air Force polyimide AFR-PEPAN.
The salt hydrates were observed to absorb water and then evaporate water, but due to
having a collapsible lattice, made them incapable of reabsorbing water. Polyacrylic acid
was mixed into an epoxy sheet at polacrylic acid weight percentages of 5, 10, 12.5. For
each weight percentage there was a hydrated epoxy specimen and a dry epoxy specimen.
All specimens were individually shot with a hot air stream (temperature approximately
1300C). Temperature readings were taken for each sheet. The hydrated specimen
exhibited greater evaporative cooling over its dry counterpart. 12.5 wt% was shown to
have the best evaporative cooling mechanism. Experiments were repeated to show that
the polyacrylic could reabsorb water. This study illustrates proof of concept utilizing
polyacrylic acid as an evaporative cooling material.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/3189 |
| Date | 12 April 2006 |
| Creators | O'Neal, Justin Earl |
| Contributors | Morgan, Roger |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | 1988069 bytes, electronic, application/pdf, born digital |
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