{"title":"The Report of the 2015 Marcus Wallenberg Prize Ceremony","authors":"岩田 忠久","doi":"10.2115/fiber.71.p-563","DOIUrl":"https://doi.org/10.2115/fiber.71.p-563","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131122645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fatigue fracture properties of wood plastic composites (WPC) were investigated. The material was based on a wood flour/ polypropylene (PP) master batch, and prepared to be 30wt% and 50wt% wood flour contents by the addition of PP pellets. First, kneading temperature and screw speed of a uni-axial extruder were changed in some conditions, and 190°C and 20rpm were decided from tensile test of the injection-molded WPC specimens as the optimum manufacturing conditions. Next, tensile and fatigue tests were carried out for WPC specimens with 30wt% and 50wt% wood flour contents. The resultant tensile strength and fatigue life were largely improved as compared to neat PP specimens. When a lump of the master batch remained in the WPC specimen, the strength and life were reduced. It should be noted that, while fatigue life of the neat PP specimens was only 10 to 10 cycles to failure range at 30MPa maximum cyclic stress, those of WPC specimens with 30wt% and 50wt% contents were drastically extended to 10 to 10, and 10 to 10 cycles to failure, respectively. It was estimated that the major cause of fatigue damage in WPC specimens was craze occurring in the matrix, which initiated near the specimen surface, extended into the inner, and finally led to the unstable fracture. (Received 18 May, 2015 ; Accepted 4 September, 2015) # corresponding author *1 山口大学 大学院理工学研究科,現在 Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka (UTeM) *2 山口大学 学部生 *3 山口大学 工学部機械工学科 *4 トクラス(株) 事業開発推進部 1Graduate School of Science and Engineering, Yamaguchi University, Ube 755-8611, Japan 2Undergraduate of Faculty of Engineering, Yamaguchi University, Ube 755-8611, Japan 3Department of Mechanical Engineering, Yamaguchi University, Ube 755-8611, Japan 4TOCLAS Corporation, Business Development Division, Hamamatsu 432-8001, Japan 一般報文 ウッドプラスチック複合材料の疲労破壊特性 Fatigue Fracture Properties of Wood Plastic Composites M. N. A. Nordin , Yuta Makino , Koichi Goda , and Hirokazu Ito *4 (61) SEN’I GAKKAISHI (報文)Vol.71, No. 12 (2015) 339 Wood flour PP Maleic anhydridemodified PP 68.1wt% 29.2wt% 2.7wt% 母材としてポリプロピレン(ホモ系,MI=30,(株)プライム ポリマー製,以下 PPと記す)をそれぞれ用いた.木粉/樹 脂マスターバッチ構成素材の配合率を Table1に示す. Table1のMaleic anhydride-modified PP(無水マレイン酸変 性 PP)とは,木粉と PPの界面結合を高めるために用いら れる相溶化剤であり,この添加によって界面強度は大き く向上することが知られている[5,8]. 2.2 作製方法 マスターバッチと PPを恒温乾燥機で 120°C,5時間処 理し,木粉含有率が所定の割合になるように混合した. これを単軸押出機(ムサシノキカイ(株)製)に投入し両者を 混練した.得られた混練物を簡易ペレタイザによって切 断し,条件によっては得られたペレットを再度混練・切 断し,射出成型機(井元製作所(株)製)を用い,温度 200°C で試験片形状の射出成形品を得た(以下,再度混練したも のを’混練回数 2回’と記し,1回のみを’混練回数 1回’と 記す).Fig. 1にその形状と寸法を示す.まず疲労試験に 先立ち,30wt%木粉含有率の条件下,単軸押出機の混練温 度 180,190°C,スクリュー回転速度を 5,10,20,30rpm に変化させた計 8条件を用い,静的引張試験によって最 適混練温度および最適回転速度(以下,最適条件と記す) を選定した.なお,用いたスクリュー回転速度は混練時 間に換算すると,53,46,20,11分にそれぞれ対応する. 続いて,得られた最適条件で 50wt%木粉含有率の試験片 も作製するとともに,木粉の分散性の影響も評価するた め,混練回数 1回および 2回の試験片を作製し,疲労試 験を実施した. 2.3 引張および疲労試験 疲労荷重の設定に際し,予め静的引張試験を実施した. 試験機として小型卓上試験機(容量 : 1.0kN,JTトーシ(株) 製)を用い,ひずみの測定にはひずみゲージ法を用いた. 引張試験は大気中常温下で行ない,クロスヘッド速度 1.0mm/minで試験片が破断するまで実施した. 疲労試験には電
研究了木塑复合材料的疲劳断裂性能。该材料以木粉/聚丙烯(PP)母粒为基础，通过添加PP颗粒制备成30wt%和50wt%的木粉含量。首先，在一定条件下改变单轴挤出机的捏合温度和螺杆转速，通过对塑木复合材料注射成型试样的拉伸试验，确定190℃和20rpm为最佳制造条件。其次，对木粉含量分别为30wt%和50wt%的木复合材料试件进行拉伸和疲劳试验。与纯PP试样相比，拉伸强度和疲劳寿命得到了很大的提高。当母料的块状残留在木塑试样中时，其强度和寿命都会降低。需要注意的是，在最大循环应力为30MPa时，纯PP试样的疲劳寿命仅为10 ~ 10次循环至失效范围，而添加30wt%和50wt% WPC试样的疲劳寿命则急剧延长至10 ~ 10次循环至失效范围。推测复合材料试样疲劳损伤的主要原因是基体产生裂纹，裂纹在试样表面附近开始萌生，并向内部扩展，最终导致不稳定断裂。(收到2015年5月18日;接受9月4日,2015)#通讯作者* 1山口大学大学院理工学研究科,現在机械工程学院、马来西亚Teknikal大学马六甲(UTeM) * 2山口大学学部生* 3山口大学工学部機械工学科* 4トクラス(株)事業開発推進部1科学与工程研究生院,山口大学宇部755 - 8611年,日本2本科的工学院,山口大学宇部755 - 8611年,日本3机械工程系,山口大学宇部755 - 8611年,日本4 toclas公司,木塑复合材料的疲劳断裂性能M. N. A. Nordin, Yuta Makino, Goda Koichi, and Ito Hirokazu *4 (61)， SEN 'I GAKKAISHI(中文)卷。71年,12(2015)339号木粉页马来anhydridemodified页68.1 wt % 29.2 wt % 2.7 wt %母材としてポリプロピレン(ホモ系,MI = 30,(株)プライムポリマー製,以下PPと記す)をそれぞれ用いた。木粉/樹脂マスターバッチ構成素材の配合率をTable1に示す。表1の马来anhydride-modified PP(無水マレイン酸変性PP)とは,木粉とPPの界面結合を高めるために用いられる相溶化剤であり,この添加によって界面強度は大きく向上することが知られている(5、8)。2.2作製方法マスターバッチとPPを恒温乾燥機で120°C, 5時間処理し,木粉含有率が所定の割合になるように混合した。これを単軸押出機(ムサシノキカイ(株)製)に投入し両者を混練した。得られた混練物を簡易ペレタイザによって切断し,条件によっては得られたペレットを再度混練・切断し,射出成型機(井元製作所(株)製)を用い,温度200°Cで試験片形状の射出成形品を得た(以下,再度混練したものを”混練回数2回と記し,1回のみを”混練回数1回'と記す).Fig。1 .我非常喜欢你。まず疲労試験に先立ち,30 wt %木粉含有率の条件下,単軸押出機の混練温度180190°C,スクリュー回転速度を5、10、20、30 rpmに変化させた計8条件を用い,静的引張試験によって最適混練温度および最適回転速度(以下,最適条件と記す)を選定した。なお,用いたスクリュー回転速度は混練時間に換算すると,53岁,46岁,20日11分にそれぞれ対応する。続いて,得られた最適条件で50 wt %木粉含有率の試験片も作製するとともに,木粉の分散性の影響も評価するため,混練回数1回および2回の試験片を作製し,疲労試験を実施した。2.中文:1 .中文:試験機として小型卓上試験機(容量:1.0 kn, JTトーシ(株)製)を用い,ひずみの測定にはひずみゲージ法を用いた。引張試験は大気中常温下で行ない,クロスヘッド速度1.0毫米/分钟で試験片が破断するまで実施した。疲労試験には電気油圧サーボ式材料試験機(容量:9.8 kn,サーボパルサーEHF-FBI-4LA,島津製作所(株)製)を用いた。繰返し条件は,負荷荷重の最大値Pmaxを引張強度から換算した荷重の45 ~ 80%の範囲とし,応力比* 5を0.1,周波数を3 ~ 5 (Hz),正弦波形で実施した。【中文】:。本研究で用いた最大周波数5赫兹では,PPにおいて4 ~ 6°C程度の上昇[10]が懸念されるものの,この程度ならば疲労破壊にさほど影響を及ぼさないと判断した。なお,本研究では試験片が破断もしくはネッキングが起こり,荷重負荷ができなくなるまでの繰返し回数を疲労寿命とした。
{"title":"Fatigue Fracture Properties of Wood Plastic Composites","authors":"A. NordinM.N., Yuta Makino, K. Goda, Hirokazu Ito","doi":"10.2115/fiber.71.339","DOIUrl":"https://doi.org/10.2115/fiber.71.339","url":null,"abstract":"Fatigue fracture properties of wood plastic composites (WPC) were investigated. The material was based on a wood flour/ polypropylene (PP) master batch, and prepared to be 30wt% and 50wt% wood flour contents by the addition of PP pellets. First, kneading temperature and screw speed of a uni-axial extruder were changed in some conditions, and 190°C and 20rpm were decided from tensile test of the injection-molded WPC specimens as the optimum manufacturing conditions. Next, tensile and fatigue tests were carried out for WPC specimens with 30wt% and 50wt% wood flour contents. The resultant tensile strength and fatigue life were largely improved as compared to neat PP specimens. When a lump of the master batch remained in the WPC specimen, the strength and life were reduced. It should be noted that, while fatigue life of the neat PP specimens was only 10 to 10 cycles to failure range at 30MPa maximum cyclic stress, those of WPC specimens with 30wt% and 50wt% contents were drastically extended to 10 to 10, and 10 to 10 cycles to failure, respectively. It was estimated that the major cause of fatigue damage in WPC specimens was craze occurring in the matrix, which initiated near the specimen surface, extended into the inner, and finally led to the unstable fracture. (Received 18 May, 2015 ; Accepted 4 September, 2015) # corresponding author *1 山口大学 大学院理工学研究科,現在 Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka (UTeM) *2 山口大学 学部生 *3 山口大学 工学部機械工学科 *4 トクラス(株) 事業開発推進部 1Graduate School of Science and Engineering, Yamaguchi University, Ube 755-8611, Japan 2Undergraduate of Faculty of Engineering, Yamaguchi University, Ube 755-8611, Japan 3Department of Mechanical Engineering, Yamaguchi University, Ube 755-8611, Japan 4TOCLAS Corporation, Business Development Division, Hamamatsu 432-8001, Japan 一般報文 ウッドプラスチック複合材料の疲労破壊特性 Fatigue Fracture Properties of Wood Plastic Composites M. N. A. Nordin , Yuta Makino , Koichi Goda , and Hirokazu Ito *4 (61) SEN’I GAKKAISHI (報文)Vol.71, No. 12 (2015) 339 Wood flour PP Maleic anhydridemodified PP 68.1wt% 29.2wt% 2.7wt% 母材としてポリプロピレン(ホモ系,MI=30,(株)プライム ポリマー製,以下 PPと記す)をそれぞれ用いた.木粉/樹 脂マスターバッチ構成素材の配合率を Table1に示す. Table1のMaleic anhydride-modified PP(無水マレイン酸変 性 PP)とは,木粉と PPの界面結合を高めるために用いら れる相溶化剤であり,この添加によって界面強度は大き く向上することが知られている[5,8]. 2.2 作製方法 マスターバッチと PPを恒温乾燥機で 120°C,5時間処 理し,木粉含有率が所定の割合になるように混合した. これを単軸押出機(ムサシノキカイ(株)製)に投入し両者を 混練した.得られた混練物を簡易ペレタイザによって切 断し,条件によっては得られたペレットを再度混練・切 断し,射出成型機(井元製作所(株)製)を用い,温度 200°C で試験片形状の射出成形品を得た(以下,再度混練したも のを’混練回数 2回’と記し,1回のみを’混練回数 1回’と 記す).Fig. 1にその形状と寸法を示す.まず疲労試験に 先立ち,30wt%木粉含有率の条件下,単軸押出機の混練温 度 180,190°C,スクリュー回転速度を 5,10,20,30rpm に変化させた計 8条件を用い,静的引張試験によって最 適混練温度および最適回転速度(以下,最適条件と記す) を選定した.なお,用いたスクリュー回転速度は混練時 間に換算すると,53,46,20,11分にそれぞれ対応する. 続いて,得られた最適条件で 50wt%木粉含有率の試験片 も作製するとともに,木粉の分散性の影響も評価するた め,混練回数 1回および 2回の試験片を作製し,疲労試 験を実施した. 2.3 引張および疲労試験 疲労荷重の設定に際し,予め静的引張試験を実施した. 試験機として小型卓上試験機(容量 : 1.0kN,JTトーシ(株) 製)を用い,ひずみの測定にはひずみゲージ法を用いた. 引張試験は大気中常温下で行ない,クロスヘッド速度 1.0mm/minで試験片が破断するまで実施した. 疲労試験には電","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Sakurada, Y. Sakaguchi, K. Suzue, Kazuhiro Nagai
{"title":"PREPARATION OF ACETATE RAYON BY THE ACETYLATION OF VISCOSE RAYON WITH ACETIC ANHYDRIDE VAPOR:(XIV) SOME PROPERTIES OF THE ACETYLATED FIBERS","authors":"I. Sakurada, Y. Sakaguchi, K. Suzue, Kazuhiro Nagai","doi":"10.2115/fiber.9.498","DOIUrl":"https://doi.org/10.2115/fiber.9.498","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"809 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123287472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Report of Young Researchers Seminar","authors":"W. Okumura","doi":"10.2115/fiber.71.p-643","DOIUrl":"https://doi.org/10.2115/fiber.71.p-643","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125027052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Ohkawa, M. Mizuno, J. Araki, Y. Tamada, A. Nishikawa
{"title":"Division of Biological and Medical Fibers","authors":"K. Ohkawa, M. Mizuno, J. Araki, Y. Tamada, A. Nishikawa","doi":"10.2115/fiber.71.p-335","DOIUrl":"https://doi.org/10.2115/fiber.71.p-335","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127331999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sensation and Measurements Research Committee","authors":"西松 豊典","doi":"10.2115/fiber.72.p-59","DOIUrl":"https://doi.org/10.2115/fiber.72.p-59","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133043470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Acetate Rayon by the Acetylation of Viscose Rayon with Acetic Anhydride Vapor:(IX). On the Possibility of Pretreatment with a Liquid Medium other than Water","authors":"I. Sakurada, Kazuhiro Nagai","doi":"10.2115/fiber.9.494","DOIUrl":"https://doi.org/10.2115/fiber.9.494","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133838091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Acetate Rayon by the Acetylation of Viscose Rayon with Acetic Anhydride Vapor:(V) Acetylation of Loosely Packed Fibers with a Current of Acetic Anhydride Vapor","authors":"I. Sakurada, K. Suzue, Y. Sakaguchi","doi":"10.2115/fiber.7.333","DOIUrl":"https://doi.org/10.2115/fiber.7.333","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122904892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"STUDIES ON THE PHYSICO-CHEMICAL PROPERTIES OF DYE SOLUTION AND THE ADSORPTION OF DYES:(VI) ON THE DISPLACEMENTS OF ORANGE II ANIONS ON SILK BY INORGANIC ANIONS","authors":"M. Mitsuishi, G. Aida","doi":"10.2115/fiber.20.482","DOIUrl":"https://doi.org/10.2115/fiber.20.482","url":null,"abstract":"","PeriodicalId":224481,"journal":{"name":"Sen-ito Kogyo","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115490413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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