G1101-1-1 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のための光化学的フッ素化処理(機素潤滑設計一般セッション1)

概要

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In the medical field, plastic syringes are used with silicone oil for the sliding area between barrels and gaskets, where the barrels are typically plastics such as PP (Polypropylene) and the gaskets are usually made of TPE (Thermoplastic elastomer). However, silicone oil is considered to have some demerits. Therefore, the development of unlubricated plastic syringes is desired. In this study, to decrease the friction between barrels and gaskets under unlubricated condition, we treated PPs and TPEs by a surface fluorination with PFPE (Perfluoropolyether) application and VUV (Vacuum ultraviolet) irradiation with excimer lamp. As a result of experiment, it was confirmed that the friction coefficient between fluorinated TPEs and non-treated PPs decreased by up to 77%. In addition, it was confirmed that the decreasing of friction coefficient was accompanied by decreasing of real contact area and work of adhesion arisen from the reduction of surface free energy.
社団法人日本機械学会の論文
2009-09-12