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An investigation of chemically-induced improvement in saturation moisture characteristics of epoxies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stoakley, D. M. St clair, T. L. Singh, J. J. |
| Copyright Year | 1984 |
| Description | MY-720/DDS epoxy samples were treated with three selected chemical compounds to render the active H-sites inactive for moisture absorption. Treating the epoxy castings with acetyl chloride and dichlorodimethyl silane leads only to surface changes indicating that these molecules are too large to penetrate the epoxy castings. Boron trifluoride, on the other hand, does penetrate the epoxy chain as is indicated by the formation of green domains in the interior of the castings. However, the process of saturating the specimens with moisture appears to leach out the chemical additives--thereby nullifying their possible ameliorative effects. |
| File Size | 7876762 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840019765 |
| Archival Resource Key | ark:/13960/t2k699w2f |
| Language | English |
| Publisher Date | 1984-06-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Silanes Saturation Chemistry Additives Moisture Samples Epoxy Compounds Acetyl Compounds Positron Annihilation Fluorides Castings Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
