WEKO3
アイテム
ポリウレタン網目の低温緩和
http://hdl.handle.net/10069/23943
http://hdl.handle.net/10069/239438d796f0c-3017-4f2b-b9d0-b9bb7acbe009
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kogaku00_12_10.pdf (620.8 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2010-09-15 | |||||||||||
| タイトル | ||||||||||||
| タイトル | ポリウレタン網目の低温緩和 | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||
| 著者 |
古川, 睦久
× 古川, 睦久
× 馬場, 恒明
× 横山, 哲夫
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| 著者別名 | ||||||||||||
| 識別子Scheme | WEKO | |||||||||||
| 識別子 | 59856 | |||||||||||
| 姓名 | Furukawa, Mutsuhisa | |||||||||||
| 著者別名 | ||||||||||||
| 識別子Scheme | WEKO | |||||||||||
| 識別子 | 59857 | |||||||||||
| 姓名 | Baba, Koumei | |||||||||||
| 著者別名 | ||||||||||||
| 識別子Scheme | WEKO | |||||||||||
| 識別子 | 59858 | |||||||||||
| 姓名 | Yokoyama, Tetsuo | |||||||||||
| その他のタイトル | ||||||||||||
| その他のタイトル | A Study on Low Temperature Relaxations of Polyurethane Networks | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The low temperature relaxations of amorphous polyurethane networks were investigated by measuring their dynamic mechanical properties over temperature range of -150℃ to 20℃. Two series of crosslinked polyurethanes were prepared by prepolymer technique. In one series, prepolymers based on poly(oxypropylene) glycol (PPG) and 2,4-tolylene diisocyanate (TDI) were crosslinked with p-xylylene glycol (XG) ,,1 4-butanediol(BD), trimethylol propane (TMP), or 4,4' -methylenebis (2-chloroaniline) (MOCA). In the other, prepolymers based on PPG and hexamethylene diisocyanate (HMDI) were crosslinked with XG, BD, or TMP. Three relaxations (α ,β, γ-relaxation) were observed for all samples. The α relaxation is associated with micro-Brownian motion of polymer backbones . The γ relaxation (-110℃～-150℃) is associated with local motion of polymer backbones and with a rotation of the methyl side groups of PPG. The γ relaxation of TMP-cured polyurethanes includes a rotation of the ethyl side groups of TMP. The β relaxation is associated with the motion of crosslinking site. The structure of crosslinking site and crosslinking density infuluence temperature and peak intensity of β relaxation. The relaxation temperatures are as fol lows: -TDI-XG -68℃; -TDI-BD -90℃; -TDI-TMP -70℃; -TDI-MOCA -70℃;/ -HMDI-XG -78℃; -HMDI-BD-80℃; -HMDI-TMP -75℃. The temperature and peak intensity of these relaxations were discussed in connection with the results of swelling measurement. | |||||||||||
| 書誌情報 |
長崎大学工学部研究報告 en : Reports of the Faculty of Engineering, Nagasaki University 号 12, p. 73-80, 発行日 1979-02 |
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| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 02860902 | |||||||||||
| EISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 18805574 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00178418 | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | 長崎大学工学部 | |||||||||||
| 出版者別言語 | ||||||||||||
| Faculty of Engineering, Nagasaki University | ||||||||||||
| 引用 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 長崎大学工学部研究報告, (12), pp.73-80; 1979 | |||||||||||
