DSpace university logo mark
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > 060 工学部・工学研究科 > 060 紀要 > 長崎大学工学部研究報告 > 第15号 >


ファイル 記述 サイズフォーマット
kogaku00_15_13.pdf416.01 kBAdobe PDF本文ファイル

タイトル: PPG-TDI-BDポリウレタン網目の分析
その他のタイトル: Analysis of Polyurethane Networks prepared from PPG-TDI-BD
著者: 古川, 睦久
著者(別表記) : Furukawa, Mutsuhisa
発行日: 1980年 7月
出版者: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
引用: 長崎大学工学部研究報告, (15), pp.95-100; 1980
抄録: Methods for the determination of the degree of crosslinking and the number of effective chains per unit volume in polyurethane networks have been described. The methods are as follws; 1) calculation from stoichiometry, 2) calculation from molecular weight of linear polyurethanes which were obtained by the degradation of crosslink site of cured polyurethane, 3) calculation from amine degradation, and 4) calculation from Young's modulus. The allophanate-cured polyurethanes prepared from PPG, TDI, and 1, 4-butanediol have been used as model networks in order to ascertain the validity of these methods. The parameters of network structure calculated from the experimental methods are lower than those from stoichiometry. The parameters calculated from method 2 and 3 were fairly close to those from Young's moduli. The properties of the primary chains which were the starting and the intermediate materials for preparing polyurethane networks have been studied with GPC, HPLC, IR, and UV.
URI: http://hdl.handle.net/10069/23990
ISSN: 02860902
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/23990



Valid XHTML 1.0! Copyright © 2006-2015 長崎大学附属図書館 - お問い合わせ Powerd by DSpace