| タイトル | Thermally stable, low dielectric polyquinolines for aerospace and electronics applications |
| 著者（英） | Stoakley, Diane M.; St. Clair, Anne K.; Marrocco, Matthew L.; Hendricks, Neil H. |
| 著者所属（英） | NASA Langley Research Center|Maxdem, Inc. |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | Four new high molecular weight, linear chain polyquinolines have been synthesized and fabricated into high quality free standing films. These polymers are characterized by moderate to high glass transition temperatures, excellent thermal and thermooxidative stability, extremely low dielectric constants and good planarizing characteristics. The polymers absorb very low quantities of moisture. As a consequence, the dielectric constant of one new polyquinoline has been shown to be quite insensitive to exposure to warm/wet conditions. Isothermal aging of one new derivative in air has been carried out at elevated temperatures (250 C to 345 C). The results demonstrate truly outstanding thermooxidative stability. Additional characterizations include molecular weight determinations, solubilities and film-forming characteristics, density measurements, and UV-Vis spectroscopy. The data acquired to date suggest that the polymers may find use as refractive films and coatings and as interlevel planarizers in microelectronics applications. |
| NASA分類 | NONMETALLIC MATERIALS |
| レポートNO | 92A10323 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/331692 |
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