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タイトル: Effects of addition of hindered phenol compounds to a segmented polyurethane with shape memory on mechanical yielding
著者: Kuriyagawa, Mizue
Kawamura, Takanobu link image
Hayashi, Shunichi
Nitta, Koh-hei link image link image
栗谷川, 瑞枝
河村, 幸伸
新田, 晃平
発行日: 2011年 3月
出版社(者): Springer Verlag (Germany)
雑誌名: Journal of Materials Science
ISSN: 0022-2461
巻: 46
号: 5
開始ページ: 1264
終了ページ: 1271
抄録: The mechanical yielding behavior of the shape memory polyurethane (SMP) and its composite samples were investigated to verify the effect of addition of hindered phenol. The composite samples were prepared using SMP as matrix and hindered phenol (AO-80) as filler, and then tensile tests were carried out at a range of temperatures and with different fixed crosshead speeds. According to the tensile data at 25 °C, the yield stress was increased by adding AO-80. In terms of the Eyring theory, the activation volume of deformation units decreased with increase of the amount of AO-80 added. This is because the packing of the hard segments is enhanced by addition of AO-80. Consequently, it was suggested that the yield process is caused by the rotation of hard segment domains within the deformed plastic domains composed of glassy soft segments. © 2010 Springer Science+Business Media, LLC.
DOI: 10.1007/s10853-010-4910-9
URI: http://hdl.handle.net/2297/25427
資料種別: Journal Article
版表示: author
出現コレクション:1.査読済論文(工)

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