| タイトル | High-Flow, High-Molecular-Weight, Addition-Curing Polyimides |
| 著者（英） | Chuang, Kathy C.; Vannucci, Raymond D. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1993-12-01 |
| 言語 | eng |
| 内容記述 | In developed series of high-flow PMR-type polyimide resins, 2, 2'-bis(trifluoromethyl)-4, 4'-diaminobiphenyl (BTDB) substituted for 1, 4-pheylenediamine in PMR-II formulation. Polyimides designated either as PMR-12F when nadic ester (NE) end caps used, or as V-CAP-12F when p-aminostyrene end caps used. High-molecular-weight, addition-curing polyimides based on BTBD and HFDE highly processable high-temperature matrix resins used to make composite materials with excellent retention of properties during long-term exposure to air at 650 degrees F or higher temperature. Furthermore, 12F addition-curing polyimides useful for electronic applications; fluorinated rigid-rod polyimides known to exhibit low thermal expansion coefficients as well as low absorption of moisture. |
| NASA分類 | MATERIALS |
| レポートNO | 93B10771
LEW-15399 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/323031 |
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