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2023 Fiscal Year Final Research Report

Development of low-friction soft polymer materials with regeneration and restoration functions

Research Project

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Project/Area Number 20H02060
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionOkinawa National College of Technology (2022-2023)
Tsuruoka National College of Technology (2020-2021)

Principal Investigator

SATO TAKAYA  沖縄工業高等専門学校, その他部局等, 校長 (30399258)

Co-Investigator(Kenkyū-buntansha) 上條 利夫  鶴岡工業高等専門学校, その他部局等, 教授 (00588337)
荒船 博之  鶴岡工業高等専門学校, その他部局等, 准教授 (90707811)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsポリマーブラシ / ゲル / イオン液体 / アニオン重合 / リビングラジカル重合 / 自己修復 / トライボロジー / 低摩擦
Outline of Final Research Achievements

In this research, we developed a soft material with low-friction that have the regeneration and self-repair functions. The low-friction sliding system including our material could not require replacement of the friction surface. Synthesize ABA type tri-block polymer using living anion polymerization technology,We have established a technology that utilizes the difference in hydrophilic and hydrophobic properties to form a loop-shaped brush from within the base material. We found that this surface functions as a low friction sliding system on the order of 10^-3. In parallel, we established conditions for synthesizing ion gel thin films with slide ring crosslinks.It was confirmed that the synthesized polymer brush and gel function as low-friction materials with regeneration and repair functions.

Free Research Field

高分子材料化学

Academic Significance and Societal Importance of the Research Achievements

従来の金属材料やダイヤモンドライクカーボンなどのハード材料における接触面積低減による摩擦低減に対し、ポリマーブラシやゲルなどの柔らかいソフト材料は相手材の凹凸にソフト変形し相手面を侵襲することなく低摩擦を保持できることを示した。これらの材料は自己修復機能をも有するので、特に交換に多大なコストがかかる宇宙空間やマイクロデバイスシステムの摩擦材料として大きなメリットがある。

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Published: 2025-01-30  

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