• Title/Summary/Keyword: Chemical coupling

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Surface Modification of Glass Fiber for Polymer Insulator by Plasma Surface Treatment (플라즈마 표면처리에 따른 고분자절연재료용 유리섬유의 표면개질)

  • 임경범;이덕출
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.52 no.5
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    • pp.206-206
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    • 2003

  • It is hard to expect excellent electrical, mechanical and chemical properties from most of the composite materials presently used as insulators due to insufficient wettability property caused by the difference of interfacial properties between the matrix material and the reinforcer. Therefore, various interfacial coupling agents have been developed to improve the interfacial properties of composite materials. But if the wettable coupling agents are used outdoor for a long time, change in quality takes place in the coupling agents themselves, bringing about deterioration of the properties of the composite materials. In this study, glass surface was treated by plasma to examine the effect of dry interface treatment without coupling agent. It was identified that the optimum parameters for the best wettability of the samples at the time of generation of plasma were oxygen atmosphere, 0.1 torr of system pressure, 100 W of discharge power, and 3 minutes of discharge time. Also, the surface resistance rate and dielectric property were improved.

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Surface Modification of Glass Fiber for Polymer Insulator by Plasma Surface Treatment (플라즈마 표면처리에 따른 고분자절연재료용 유리섬유의 표면개질)

  • 임경범;이덕출
    • The Transactions of the Korean Institute of Electrical Engineers C
    • /
    • v.52 no.5
    • /
    • pp.206-212
    • /
    • 2003

  • It is hard to expect excellent electrical, mechanical and chemical properties from most of the composite materials presently used as insulators due to insufficient wettability property caused by the difference of interfacial properties between the matrix material and the reinforcer. Therefore, various interfacial coupling agents have been developed to improve the interfacial properties of composite materials. But if the wettable coupling agents are used outdoor for a long time, change in quality takes place in the coupling agents themselves, bringing about deterioration of the properties of the composite materials. In this study, glass surface was treated by plasma to examine the effect of dry interface treatment without coupling agent. It was identified that the optimum parameters for the best wettability of the samples at the time of generation of plasma were oxygen atmosphere, 0.1 torr of system pressure, 100 W of discharge power, and 3 minutes of discharge time. Also, the surface resistance rate and dielectric property were improved.

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Improvement of Mechanical Interfacial Properties of Silica/Rubber Composites by Silane Coupling Agent Treatment (실란 커플링제를 이용한 실리카/고무 복합재료의 기계적 계면 물성의 향상)

  • Park, Soo-Jin;Cho, Ki-Sook;Lee, Jae-Rock
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2001.10a
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    • pp.121-124
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    • 2001

  • Surface-modified silica holds considerable promise in the development of advanced materials for good mechanical properties and stability. In this work, the surface and mechanical interfacial properties of silicas treated with silane coupling agents, such as Y-methacryloxy propyl trimethoxy silane (MPS). Y-glycidoxy propyl trimethoxy silane (GPS), and Y-mercapto propyl trimethoxy silane (MCPS), are investigated. The effect of silane surface treatments of silica on the surface properties and surface energetics are studied in terms of surface functional values and contact angle measurements. And their mechanical interfacial properties of the silica/rubber composites are studied by the composite tearing energy ($G_{IIIC}$). As a result. the mechanical interfacial properties are improved in the case of silane-treated composites compared with untreated one. It reveals that the functional groups on silica surface by silane surface treatments play an important role in improving the degree of adhesion at interfaces in a silica-filled rubber system.

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