表面技術
Online ISSN : 1884-3409
Print ISSN : 0915-1869
ISSN-L : 0915-1869
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65 巻, 5 号
選択された号の論文の6件中1～6を表示しています
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小特集／表面処理と知財/特許
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研究論文
  • プラズマプロセスを援用した高接着性ポリテトラフルオロエチレン／エポキシ樹脂／SUS304界面形成技術
    是津 信行, 山村 和也, 井筒 祐志, 我田 元, 大石 修治, 手嶋 勝弥
    2014 年 65 巻 5 号 p. 227-233
    発行日: 2014/05/01
    公開日: 2015/05/01
    DOIhttps://doi.org/10.4139/sfj.65.227
    ジャーナル フリー
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    Polytetrafluoroethylene (PTFE) is used in quake-absorbing structures because of its low friction characteristic. Because of its low surface energy, however, a pristine PTFE surface exhibits difficulty adhering to other substances. Consequently, PTFE surface normally requires some pretreatment such as chemical modification before adhesion. We herein propose a new surface modification route for adhesion enhancement of PTFE/epoxy resin interfaces using plasma-assisted morphological and molecular designs. Plasma processing methods under air and in water were used to introduce the peroxide radical and porous structures onto the PTFE surface. Subsequently, a polyethyleneimine derivative having primary amino groups at the molecular end in the side-chain was chemically modified by graft copolymerization to introduce reactive functional groups on the surfaces against epoxy resin-based glue. We achieved enhancement of T-peel strength between the PTFE substrate/ epoxy resin/ SUS substrate of 9.3 N/mm, which exceeds the T-peel strength obtained from conventionally used sodium-naphthalene processing (9.1 N/mm).
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技術論文
  • 光表面活性化によるシクロオレフィンポリマーの接合：接合強度評価とマイクロ流路への応用
    谷口 義尚, 金 永鍾, 萩生 真知子, 田口 好弘, 杉村 博之
    2014 年 65 巻 5 号 p. 234-239
    発行日: 2014/05/01
    公開日: 2015/05/01
    DOIhttps://doi.org/10.4139/sfj.65.234
    ジャーナル フリー
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    For application to synthetic resin parts and to the fabrication of microfluidic devices made of cyclo-olefin polymer (COP), an adhesiveless bonding technology was developed: photo-activation bonding. A Xe excimer lamp irradiating vacuum ultraviolet (VUV) light of 172 nm wavelength was used as a light source for COP surface modification. The surface modification procedure is extremely simple. A COP plate placed in air with atmospheric pressure is irradiated with the VUV light. Based on VUV photochemistry assisted with atmospheric oxygen, a modified layer including large amounts of polar functional groups (-OH, -CHO, -COOH, etc.) is formed on the COP plate. The VUV-modified COP plates were bonded at a low temperature through attractive interactions between the modified layers on the COP plates without deforming the plates＇ preformed microstructures. A strength test of bonding was conducted to elucidate the effects of surface modification and bonding conditions such as VUV-irradiation distance (dVUV), VUV-irradiation time (tVUV), bonding pressure (PB), bonding temperature (TB), and bonding time (tB).
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