無潤滑下での熱可塑性エラストマーとプラスチックの摩擦力低減(機械要素,潤滑,設計,生産加工,生産システムなど)

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タイトル別名
  • Friction Reduction between Thermoplastic Elastomers and Plastics under Unlubricated Condition(Machine Elements, Design and Manufacturing)
  • 無潤滑下での熱可塑性エラストマーとプラスチックの摩擦力低減
  • ムジュンカツ カ デ ノ ネツ カソセイ エラストマー ト プラスチック ノ マサツリョク テイゲン

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In the medical field, plastic syringes are used with silicone oil for the sliding area between a barrel and gasket, where barrels are typically plastics such as PP (Polypropylene) and gaskets are made of either vulcanized rubber or TPE (Thermoplastic elastomer). However, silicone oil is considered to have some demerits: accumulation in the body and adsorption of medicine's constituent. Therefore, the development of unlubricated plastic syringes is desired. In this study, in order to decrease the friction between barrels and gaskets under unlubricated condition, we treated PP and TPE for medical use by a surface fluorination with PFPE (Perfluoropolyether) and excimer lamp. The effect of the treatment was estimated by making friction test, analyzing FTIR spectrum and measuring surface free energy. As a result of experiment, it was confirmed that the friction coefficient between fluorinated TPE and non-treated PP is decreased by 50%.

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