Structure and physical properties of the polyolefin materials Produced by rotomoldings

• Project/Area Number: 20550184
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Polymer/Textile materials
• Research Institution: Kanazawa University
• Principal Investigator: NITTA Koh-Hei Kanazawa University, 自然システム学系, 教授 (70260560)
• Co-Investigator(Kenkyū-buntansha): KAWAMURA Takanobu 金沢大学, 自然システム学系, 助教 (20377401)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 繊維材料 / ポリオレフィン / 溶融エレクトロスピニング / 回転成形 / ポリエチレン / 相分離 / ポリマーブレンド / エチレンメチルメタクリレート / 力学特性 / 傾斜材料 / 構造解析 / 力学特製

Research Abstract

A uniaxial roto-molding system with a glass mold allows direct observation of the rolling motion of sample particles during molding. The apparatus is used to investigate the adherence behavior of EMMA and LLDPE powders in situ during molding. Direct observation of the rolling motion and adhesion process of molding powders in situ during rotational molding showed that the adhesion starting temperature of semi-crystalline polymer powders corresponds to the melting temperature of the materials. Differently layered structures from the mold contact side to the molding interior or "air" side can be constructed by controlling the order of the introduction of the powder into the mold and by the adhesion temperature, even for blended samples with the same components. The tensile properties of the blend products were strongly affected by the layered structure. The experimental values of Young's modulus were quite in accordance with the theoretical values calculated using simple Takayanagi models.

Research Products

• [Journal Article] Viscoelastic properties and rotational mold abilities of polyolefinic materials (2010)
  • Author(s): T.Kawamura, K.Nitta, T.Igarashi
  • Journal Title: Annual Technical Conference-ANTEC, Conference Proceedings Volume: 1 Pages: 658-662
  • Peer Reviewed
• [Presentation] Mechanical properties of polyethylene-based blend materials prepared by rotational molding, 7th International Symposium on Advanced Materials in Asia-Pacific (2010)
  • Author(s): 河村幸伸、Qian Shengying、五十嵐敏郎、新田晃平
  • Organizer: JAIST International Symposium on Nano Technology 2010
  • Place of Presentation: 北陸先端科学技術大学院大学(招待講演)
  • Year and Date: 2010-10-01
• [Presentation] Mechanical properties of polyethylene-based blend materials prepared by rotational molding (2010)
  • Author(s): T.Kawamura
  • Organizer: 7th International Symposium on Advanced Materialsin Asia-Pacific
  • Place of Presentation: JAIST(石川県)
  • Year and Date: 2010-09-30
• [Presentation] Preparation and viscoelastic behavior of layer structure of polyethylene materials by rotational molding (2010)
  • Author(s): 河村幸伸、Qian Shengying、五十嵐敏郎、新田晃平
  • Organizer: PRCR-8
  • Place of Presentation: 北海道大学
  • Year and Date: 2010-08-03
• [Presentation] Morphology and Mechanical Properties of Polyolefin Materialsh Producedby Roto Imolding Process (2010)
  • Author(s): S.Qian, T.Igarashi, T.Kawamura, K.-h.Nitta
  • Organizer: 5th Pacific Rim Conference on Rheology
  • Place of Presentation: 札幌、北海道大学(北海道)(招待講演)
  • Year and Date: 2010-08-03
• [Presentation] Viscoelastic properties and rotational moldabilities of polyolefinic materials (2010)
  • Author(s): 河村幸伸、五十嵐敏郎、新田晃平
  • Organizer: ANTEC2010
  • Place of Presentation: オーランド、USA
  • Year and Date: 2010-05-17
• [Presentation] Viscoleastic properties and rotational moldabilities of polyolefinic materials (2010)
  • Author(s): T.Kawamura
  • Organizer: ANTEC2010
  • Place of Presentation: オーランド、アメリカ
  • Year and Date: 2010-05-17
• [Presentation] Mechanical Properties of polyolefinic layered structure molded by rotational molding (2010)
  • Author(s): 河村幸伸、五十嵐敏郎、新田晃平
  • Organizer: 2nd International Workshop on Polymer Engineering and Processing at JAIST
  • Place of Presentation: 北陸先端科学技術大学院大学(招待講演)
  • Year and Date: 2010-03-08
• [Presentation] Mechanical Properties of polyolefinic layered structure molded by rotational molding (2010)
  • Author(s): 河村幸伸
  • Organizer: 2nd International Workshop on Polymer Engineering and Processing at JAIST
  • Place of Presentation: 北陸先端科学技術大学院大学(石川県)
  • Year and Date: 2010-03-08
• [Presentation] 回転成形により調製したポリエチレン系積層構造体の力学特性 (2009)
  • Author(s): 河村幸伸、五十嵐敏郎、新田晃平
  • Organizer: 第17回プラスチック成型加工学会秋季大会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-11-07
• [Presentation] 回転成形により調製したポリエチレン系積層構造体の力学特性 (2009)
  • Author(s): 河村幸伸
  • Organizer: 第17回プラスチック成型加工学会秋季大会
  • Place of Presentation: 長崎大(長崎県)
  • Year and Date: 2009-11-07
• [Presentation] 回転成形によるポリエチレン系積層構造体の調製 (2009)
  • Author(s): 河村幸伸、五十嵐敏郎、新田晃平
  • Organizer: 第57回レオロジー討論会
  • Place of Presentation: 宇部全日空ホテル
  • Year and Date: 2009-10-05
• [Presentation] 回転成形によるポリエチレン系積層構造体の調製 (2009)
  • Author(s): 河村幸伸
  • Organizer: 第57回レオロジー討論会
  • Place of Presentation: 宇部全日空ホテル(山口県)
  • Year and Date: 2009-10-05
• [Presentation] ポリオレフィン系材料の粘弾性特性と回転成形性 (2008)
  • Author(s): 河村幸伸、五十嵐敏郎、大谷吉生、新田晃平
  • Organizer: 成形加工シンポジア'08
  • Place of Presentation: 福井大学文教キャンパス
  • Year and Date: 2008-11-01