| タイトル | Chemiluminescence Study on Thermal Degradation of Aircraft Tire Elastomers |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760021335 |
| 著者（英） | Mendenhall, G. D.; Stanford, T. B.; Nathan, R. A. |
| 著者所属（英） | Battelle Columbus Labs. |
| 発行日 | 1976-06-30 |
| 言語 | eng |
| 内容記述 | Since the autoxidative process accounts in part for the degradation of rubber, including aircraft tires, it was felt that a study of the chemiluminescence from unsaturated elastomers could contribute significantly to an understanding of the degradation mechanism. The study revealed similarities in chemiluminescence behavior between four elastomers which were investigated, and it shows that similar oxidation mechanisms occur. Oxidative chemiluminescence was observed from purified samples of cis-1,4-polybutadiene, cis-1,4-polyisoprene, trans-polypentenamer, and 1,2-polybutadiene in an oxygen atmosphere at 25-150 C. The elastomer samples were placed in a 600 watt oven which is equipped with gas inlets for introducing any desired atmosphere. Chemiluminescence emission from the samples was focused with a two inch quartz lens onto the detector of a 12" photomultiplier which is connected to a photon counter. A strip-chart recorder, connected to the counter, permitted automatic data collection. Diagrams of the apparatus are included. The chemical reactions which occurred from the thermal decomposition of the polymer samples are described, and results (and tabulated data) are discussed. |
| NASA分類 | NONMETALLIC MATERIALS |
| レポートNO | 76N28423
NASA-CR-137856 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/185110 |
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