• Title/Summary/Keyword: POLYMER

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Behavior of Polymer-Impregnated Concrete Beams (폴리머 침투콘크리트 보의 거동)

  • 변근주;이상민;유동우;이용진
    • Proceedings of the Korea Concrete Institute Conference
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    • 1992.04a
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    • pp.67-73
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    • 1992
  • Polymer-Impregnated Concrete(PIC) is a new polymer-concrete composite material which consist of basic cement concrete and polymer. The mechanical properties and behavior of PIC depend on the type of polymers and the impregnation techniques. In general, the polymer impregnation can improve the strength, durability and ductility of normal concrete. The objective of this study is to develop the analytical procedure for analyzing the structural responces of polymer-impregnated concrete beams with different polymer loading by using finite element method on the basis of experimental results.

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Novel Coatable Polarizer Based on Polymer-Stabilized Lyotropic Chromonic Liquid Crystals

  • Bae, Yun-Ju;Jeong, Kwang-Un;Shin, Seung-Han;Lee, Myong-Hoon
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.517-519
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    • 2009
  • We fabricated thin film polarizer by coating lyotropic chromonic liquid crystals (LCLCs) dissolved in anionic monomer solution. Compared to water-based technique, the new method provided many advantages such as excellent coatability, good adhesion to various substrates, and superb surface hardness.

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Study on the flow characteristics of the polymer reactors (고분자 반응기의 내부 유동 특성에 관한 연구)

  • Choi D. S.;Im Y. H.;Han S. P.
    • 한국전산유체공학회:학술대회논문집
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    • 2002.05a
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    • pp.134-139
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    • 2002
  • This study is focused on investigating the characteristics of internal flow of the polymer reactor and its effect on the polymer quality. Four types of polymer reactor which have different kind of impeller, baffle and operation condition were calculated by CFD. Fluent 6 have been used to simulate mixing phenomena of reactor. According to the comparison of computational results and SEM photographs of polymer particle, distribution of turbulent dissipation rate greatly influences on the quality of polymer. So, distribution of turbulent dissipation rate to be important criterion to predict polymer quality.

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폴리실세스키옥산

  • Hwang, Seung-Sang;Baek, Kyung-Youl;Choi, Seung-Sock;Lee, He-Seung;Oh, Dong-Yeop
    • Polymer Science and Technology
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    • v.20 no.2
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    • pp.135-140
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    • 2009
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Drying Shrinkage of High-Fluidity Polymer-Modified Paste (고유동 폴리머 시멘트 페이스트의 건조수축)

  • Joo, Myung-Ki;Lee, Youn-Su;Yeon, Kyu-Seok
    • Proceedings of the Korea Concrete Institute Conference
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    • 2006.11a
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    • pp.929-932
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    • 2006
  • The effects of polymer-binder ratio, antifoamer content and shrinkage-reducing agent content on the setting time and drying shrinkage of high-fluidity polymer-modified pastes are examined. As a result, the setting time of the high-fluidity polymer-modified pastes tends to delayed with increasing polymer-binder ratio. Irrespective of the antifoamer content, the drying shrinkage of the high-fluidity polymer-modified pastes tend to decrease with increasing polymer-cement ratio and shrinkage-reducing agent content.

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