• Title/Summary/Keyword: Silicon rubber

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Surface Aging Properties of Silicon Rubber Insulator by salt-fog (Silicon rubber 애자의 salt-fog 표면열화 특성)

  • 이종찬;이운용;조한구;박대희
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.11a
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    • pp.255-257
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    • 2001
  • In this paper, the silicon rubber insulator for transmission line was experimented for 1,000 hours aging test in salt-fog condition. To evaluate and examine the aging properties of silicon rubber insulator for test, the leakage current of surface was measured. Also hydrophobicity and scanning electron microscopy were compared with initial and aged sample respectively Above results, we can confirm that the surface properties of silicon rubber insulator easily aged by salt-fog condition.

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Surface Aging Properties of Silicon Rubber Insulator by salt-fog (Silicon rubber 애자의 salt-fog 표면열화 특성)

  • Lee, Jong-Chan;Lee, Un-Yong;Cho, Han-Goo;Park, Dae-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.11b
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    • pp.255-257
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    • 2001
  • In this paper, the silicon rubber insulator for transmission line was experimented for 1,000 hours aging test in salt-fog condition. To evaluate and examine the aging properties of silicon rubber insulator for test, the leakage current of surface was measured. Also hydrophobicity and scanning electron microscopy were compared with initial and aged sample respectively. Above results, we can confirm that the surface properties of silicon rubber insulator easily aged by salt-fog condition.

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Individual Identification by Bite Mark using Silicon Rubber Impression Material (Silicon Rubber Impression Material의 교상 감정에의 이용)

  • 김영구
    • Journal of Oral Medicine and Pain
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    • v.4 no.1
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    • pp.13-21
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    • 1979
  • Cases involving bite marks have increased considerably since first reports of bite wound for the individual identification in Korea 1969. This is probably due to fact that investigating officers are now more aware of the value of bite mark evidence and are always alter to the possibility of sign of bite mark. Authors recently had an experience in the identification of a criminal by tracing marks made on silicon rubber impression from corp genital organ.

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Development of a Micro-pressure Sensor with high-resisting Pressure for Military Applications (군수용 고내압을 가지는 마이크로 압력센서의 개발)

  • Shim, Joon-Hwan;Seo, Chang-Taeg;Lee, Jong-Hyun
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2005.06a
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    • pp.1016-1021
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    • 2005
  • A piezoresistive pressure sensor using a silicone rubber membrane has been fabricated on the selectively diffused (100)-oriented n/n+/n silicon substrates by a unique silicon micromachining technique using porous silicon ething. The width, length and thickness of the beam were 120${\mu}m$, 600${\mu}m$ and 7${\mu}m$, respectively and the thickness of the silicone rubber membrane was 40${\mu}m$. By the fusion of silicon beam and silicone rubber membrane, the mechanical strength of the pressure sensor could be highly improved due to smaller shear stress. The effectiveness of the sensor was confirmed through an experiment and FEM simulation in which the pressure sensor was characterized.

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Duplication of Koryo Tripitaka (Taejang′kyong) by Copper Electroforming (전주공정을 이용한 팔만대장경 동판제작)

  • 김인곤;강경봉;이재근;오명현
    • Journal of the Korean institute of surface engineering
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    • v.37 no.1
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    • pp.22-27
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    • 2004
  • Copper electroforming process has been applied to duplicate Koryo Tripitaka (Taejang'kyong), wooden printing block. Thin copper replica printing plates of 1 mm thickness was successfully manufactured from the printing face (54.5${\times}$25.5 cm) of wooden printing plate. Major processes are (1) silicon rubber replication of the master (2) silvering on silicon rubber (3) copper electroforming (4) separation of copper from the silicon mandrel (5) final coloring by brass plating and trimming. This process has various Potential applications in making thin metallic objects such as plaques, statues, bust and hollow metal objects for jewelry.

Design and fabrication of a comb-type differential pressure sensor with silicon beams embedded in a silicone rubber membrane (실리콘 빔이 실리콘 고무 멤브레인에 삽입된 빗살형 차압센서의 설계 및 제조)

  • Park, Jeong-Yong;Kong, Sung-Soo;Seo, Chang-Taeg;Shin, Jang-Kyoo;Koh, Kwang-Rak;Lee, Jong-Hyun
    • Journal of Sensor Science and Technology
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    • v.9 no.6
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    • pp.424-429
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    • 2000
  • A novel differential pressure sensor has been developed with silicon beams embedded in a silicone rubber membrane. The transducer is usable for most applications involving exposure to harsh media. A piezoresistive differential pressure sensor using silicone rubber membrane has been fabricated on the selectively diffused (100)-oriented n/n+/n silicon substrates by a unique silicon micro-machining technique using porous silicon etching. The pressure sensitivity is about $0.66\;{\mu}V/mmHg$ and the non-linearity is less than 0.1%.

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A Study on the Structural Characteristics of the Hollow Casket made of Silicon Rubber (실리콘 중공 가스켓의 구조적 특성에 관한 연구)

  • Lee, Seung-Ha;Lee, Tae-Won;Sim, Woo-Jin
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.10
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    • pp.2044-2051
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    • 2002
  • In this paper, the deformed shape, the contact forces and the load-displacement curves of the real hollow gasket made of silicon rubber are analyzed using a commercial finite element program MARC. In the numerical analysis, the silicon rubber is assumed to have the properties of the geometric and material nonlinearity and the incompressibility, and the hyperelastic constitutive relations of that material are represented by the generalized Mooney-Rivlin and Ogden models. The outer frictional contact between the hollow gasket and the groove of rigid container and the inner self-contact of the hollow gasket are taken into account in the course of numerical computation. Experiments are also performed to obtain the material data for numerical computation and to show the validity of the mechanical deformation of the hollow gasket, resulting in good agreements between them.

The Dielectric Properties of the Wire for Silicon Rubber (전선용 실리콘 고무의 유전특성)

  • Lee, Sung-Ill;Park, Seoung-Ho
    • Proceedings of the Safety Management and Science Conference
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    • 2012.11a
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    • pp.355-368
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    • 2012
  • This paper, the hardness of the silicone rubber wire for 50, 60 degrees, 70 degrees High Temperature Vulcanizing (HTV) method using specimens were fabricated. In this paper, in order to investigate the dielectric properties of silicone rubber for wire specimens, the temperature range of $30^{\circ}C{\sim}170^{\circ}C$, the frequency range from 100Hz~4.5MHz report surveyed about the frequency and temperature dependent properties.

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