Development of wettability measurement for plastic material using electrostatic method

• Project/Area Number: 26420381
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Yamagata University
• Principal Investigator: SUGIMOTO TOSHIYUKI 山形大学, 大学院理工学研究科, 准教授 (10282237)
• Research Collaborator: AOKI Takuya
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ぬれ性 / 表面改質 / 表面抵抗 / 接触角 / 撥水性 / プラズマ処理 / 非接触測定 / コロナ帯電 / 湿度 / 評価 / インライン測定 / 表面電位 / 局部除電

Outline of Final Research Achievements

We proposed new method to characterize or check the wettability using the non-contact surface resistivity tester. The tester measured normalized surface potential, a measured surface potential divided by an applied surface potential due to corona discharger. The relationship between the contact angle and the normalized surface potential is measured for variously deteriorated silicon rubber samples prepared by a commercial corona treatment equipment. The results showed that the normalized surface potential was increased with decreasing contact angle and with increasing humidity. The wettability could be a function of the surface resistivity depending on the amount of deposited water vapor on the surface.

Research Products

• [Presentation] Measurement of wettability for polymer materials using non-contact surface resistivity tester (2016)
  • Author(s): Toshiyuki Sugimoto, Takuya Aoki
  • Organizer: 2016 Electrostatics Joint Conference
  • Place of Presentation: 米国 インディアナ州ラファイエット市パデュー大学
  • Year and Date: 2016-06-14
  • Int'l Joint Research
• [Presentation] 絶縁材料表面の絶縁性と撥水性の関係 (2016)
  • Author(s): 青木拓也 杉本俊之
  • Organizer: 静電気学会 春季講演会
  • Place of Presentation: 東京大学
  • Year and Date: 2016-03-04
• [Presentation] 非接触型表面抵抗率測定法を用いた絶縁材料の撥水性評価 (2015)
  • Author(s): 青木拓也 杉本俊之
  • Organizer: 電気関係学会東北支部連合大会
  • Place of Presentation: 岩手県立大学
  • Year and Date: 2015-08-27
• [Remarks] Measurement of wettability for polymer materials