{"created":"2023-05-15T16:41:21.791226+00:00","id":15983,"links":{},"metadata":{"_buckets":{"deposit":"aef34492-7c8c-4b63-8795-fda9c24b9dba"},"_deposit":{"created_by":2,"id":"15983","owners":[2],"pid":{"revision_id":0,"type":"depid","value":"15983"},"status":"published"},"_oai":{"id":"oai:nagasaki-u.repo.nii.ac.jp:00015983","sets":["14:15:1180:1269"]},"author_link":["59854","59853","59856","59858","59855","59857"],"item_3_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"A Study on Low Temperature Relaxations of Polyurethane Networks"}]},"item_3_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1979-02","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"12","bibliographicPageEnd":"80","bibliographicPageStart":"73","bibliographic_titles":[{"bibliographic_title":"長崎大学工学部研究報告"},{"bibliographic_title":"Reports of the Faculty of Engineering, Nagasaki University","bibliographic_titleLang":"en"}]}]},"item_3_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"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.","subitem_description_type":"Abstract"}]},"item_3_description_64":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"長崎大学工学部研究報告, (12), pp.73-80; 1979","subitem_description_type":"Other"}]},"item_3_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"59856","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Furukawa, Mutsuhisa"}]},{"nameIdentifiers":[{"nameIdentifier":"59857","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Baba, Koumei"}]},{"nameIdentifiers":[{"nameIdentifier":"59858","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yokoyama, Tetsuo"}]}]},"item_3_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"長崎大学工学部"}]},"item_3_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00178418","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"02860902","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_8":{"attribute_name":"EISSN","attribute_value_mlt":[{"subitem_source_identifier":"18805574","subitem_source_identifier_type":"ISSN"}]},"item_3_text_63":{"attribute_name":"出版者別言語","attribute_value_mlt":[{"subitem_text_value":"Faculty of Engineering, Nagasaki University"}]},"item_3_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"古川, 睦久"}],"nameIdentifiers":[{"nameIdentifier":"59853","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"馬場, 恒明"}],"nameIdentifiers":[{"nameIdentifier":"59854","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"横山, 哲夫"}],"nameIdentifiers":[{"nameIdentifier":"59855","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-23"}],"displaytype":"detail","filename":"kogaku00_12_10.pdf","filesize":[{"value":"620.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"kogaku00_12_10.pdf","url":"https://nagasaki-u.repo.nii.ac.jp/record/15983/files/kogaku00_12_10.pdf"},"version_id":"f123db3b-a113-4964-b774-50fcc0e5764e"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"ポリウレタン網目の低温緩和","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ポリウレタン網目の低温緩和"}]},"item_type_id":"3","owner":"2","path":["1269"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-09-15"},"publish_date":"2010-09-15","publish_status":"0","recid":"15983","relation_version_is_last":true,"title":["ポリウレタン網目の低温緩和"],"weko_creator_id":"2","weko_shared_id":-1},"updated":"2023-05-17T21:03:27.119528+00:00"}