• Title/Summary/Keyword: 합성섬유

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Necking Formation in Drawing Processes of Fibers (섬유의 연신 공정에서의 네킹 형성)

  • 윤형섭;정관수;윤재륜
    • Proceedings of the Korean Fiber Society Conference
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    • 2001.10a
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    • pp.131-134
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    • 2001
  • 합성섬유의 방사공정 중 하나인 연신 공정은 섬유의 성질을 향상시키기 위해 고화된 상태의 섬유를 신장하는 공정이다. 연신할 때 변형이 국부적으로 일어나는 네킹이 일반적으로 관찰되는데, 이 현상은 방사 공정 후에 일어나는, 합성섬유의 역학적 성질과 미세구조에 큰 영향을 미친다[1]. 본 논문에서는 네킹을 분자 구조의 변화에 대한고려 없이 거시적인 관점에서 해석하였다. (중략)

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Effect of Fiber Volume Fraction on Bond Properties of Structural Synthetic Fiber in Polypropylene Fiber Reinforced Cement Composites (폴리프로필렌섬유보강 시멘트 복합재료에 정착된 구조용 합성섬유의 부착거동에 미치는 섬유 혼입률의 효과)

  • Lee, Jin Hyeong;Park, Chan Gi
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.15 no.4
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    • pp.125-135
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    • 2011
  • The bond properties between polypropylene fiber reinforced cement composites and structural synthetic fiber have been investigated. in this paper. Three levels of polypropylene fibers volume fraction were used, 0.10%, 0.15%, and 0.20% in a series of Dog-bone pull out tests. The bond strength between structural synthetic fiber and polypropylene fiber reinforced cement composites increases with the volume fraction of polypropylene fiber, but the bond strength decreases above the amount of 0.20% by volume of polypropylene fiber reinforced cement composites. Also, the addition of polypropylene fiber a significant improved the interface toughness and the frictional resistance, The microstructure of structural synthetic fiber surface was investigated after the pullout test. The scratched of structural synthetic fiber increased with the polypropylene fiber volume fraction.

Effect of Polyvinyl Alcohol Fiber Volume Fraction on Pullout Behavior of Structural Synthetic Fiber in Hybrid Fiber Reinforced Cement Composites (하이브리드 섬유 보강 시멘트 복합 재료에서 구조용 합성 섬유의 인발 거동에 미치는 폴리비닐 알코올 섬유 혼입률의 효과)

  • Lee, Jin-Hyung;Park, Chan-Gi
    • Journal of the Korea Concrete Institute
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    • v.23 no.4
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    • pp.461-469
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    • 2011
  • In this study, the effect of polyvinyl alcohol (PVA) fiber volume fraction on the pullout behavior of structural synthetic fiber in hybrid structural synthetic fiber and PVA fiber cement composites are presented. Pullout behavior of the hybrid fiber cement composites and structural synthetic fiber were determined by dog-bone bond tests. Test results found that the addition of PVA fiber can effectively enhance the structural synthetic fiber cement based composites pullout behavior, especially in fiber interface toughness. Pullout test results of the structural synthetic fiber showed the interface toughness between structural synthetic fiber and PVA fiber reinforced cement composites increases with the volume fraction of PVA fiber. The microstructural observation confirms the incorporation of PVA fiber can effectively enhance the interface toughness mechanism of structural synthetic fiber and PVA fiber reinforced cement composites.

면 니트의 CPB 염색가공기술 및 현황

  • 김원중
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2003.08a
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    • pp.95-135
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    • 2003
  • 섬유제품 중 의류용으로 소비자들이 가장 많이 선호하는 것은 면 섬유이고, 그 중 니트제품이 차지하는 비율은 약 절반 정도이다. 면 섬유가 갖는 여러 가지 장점들을 대체하기 위하여 여러 가지 합성섬유가 개발되었으나, 천연섬유에 대한 소비자 인식이 높아지면서 스판덱스와 같은 탄성섬유를 제외한 합성섬유 소비는 점차 줄어들고 있는 반면, 면 섬유와 천연 원료에서 추출하는 모달, 텐셀, 라이오셀 등의 셀룰로오스계 신 소재는 그 소비가 증가하고 있는 추세이다. (중략)

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면 니트의 CPB 염색가공기술 및 현황

  • 구홍림
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2002.08a
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    • pp.71-116
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    • 2002
  • 섬유제품 중 의류용으로 소비자들이 가장 많이 선호하는 것은 면 섬유이고, 그중 니트제품이 차지하는 비율은 약 절반 정도이다. 면 섬유가 갖는 여러 가지 장점들을 대체하기 위하여 여러 가지 합성섬유가 개발되었으나, 천연섬유에 대한 소비자 인식이 높아지면서 스판덱스와 같은 탄성섬유를 제외한 합성섬유 소비는 점차 줄어들고 있는 반면, 면 섬유와 천연 원료에서 추출하는 모달, 텐셀, 라이오셀 등의 셀룰로오스계 신 소재는 그 소비가 증가하고 있는 추세이다. (중략)

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Low Temperature Carrier Dyeing of PVC Filaments with Disperse Dyes (분산염료를 이용한 PVC 필라멘트의 캐리어 저온 염색법)

  • 조한문;김익수;김재필
    • Proceedings of the Korean Fiber Society Conference
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    • 2001.10a
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    • pp.255-258
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    • 2001
  • 가발을 만드는데 사용되는 재료는 크게 인모와 합성섬유로 나눌 수 있다. 이중 합성섬유는 인모에 비해 가격이 저렴하고 관리가 쉬우며 동일한 제품을 대량 생산할 수 있다는 장점이 있다. 이러한 장점을 이용한 가발용 합성섬유로는 모다크릴, 나일론, 폴리에스테르 등이 있는데, 근래에는 이들보다 생산이 쉽고 단가가 낮은 PVC 필라멘트의 사용이 증가하는 추세이다. (중략)

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Bond Properties of Nonpolar Macro Synthetic Fiber in Cement Mortar with Maleic Anhydride Grafted Polypropylene Powder (무수말레인산이 그라프트된 폴리프로필렌 분말 첨가에 따른 시멘트 모르타르와 무극성 마크로 합성섬유의 부착 특성)

  • Lee, Jin-Hyung;Park, Chan-Gi
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.2A
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    • pp.137-143
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    • 2011
  • This study evaluated the effects of maleic anhydride grafted polypropylene powder (mPP) contents on the bond properties of cement mortar and nonpolar macro synthetic fibers (macro synthetic fiber). Dog-bone bond tests were performed to evaluate the bond performance of macro synthetic fiber in cement mortar with varying amounts of mPP (0%, 5%, 10%, 15%, 20%, 25%, 30% of cement weight). The bond properties (pullout behavior, pullout load and interface toughness) of macro synthetic fiber in cement mortar increased as the mPP contents was increased. The bond properties increased with the mPP contents. The microstructure of macro synthetic fiber surface was examined after the pullout test to analyze the frictional resistant force according to mPP contents during the pullout process of macro synthetic fiber in cement mortar. The scratched of macro synthetic fiber increased with the mPP contents.

Pullout and Flexural Performance of Structural Synthetic Fibers by Geometry and Sectional Area Change (구조용 합성섬유의 형상 및 단면적 변호에 따른 부착 및 휨 성능)

  • Won, Jong-Pil;Back, Chul-Woo;Park, Chan-Gi;Han, Il-Yeong;Kim, Bang-Lae
    • Journal of the Korea Concrete Institute
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    • v.15 no.5
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    • pp.643-649
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    • 2003
  • The purpose of this study were evaluated to flexural and bond performance by sectional area and geometry change through bond and flexural test of a structural synthetic fiber. Six deformed structural synthetic fibers were investigated and pullout and flexural test was conducted. Included parameters is three different geometries of fiber and two of fiber sectional area. The test result shows that the cycles and amplitude of structural synthetic fiber increased, pullout load and pullout fracture energy decreased and flexural strength increased, if sectional area is same. The sectional area increased, pullout load and pullout fracture energy increased and flexural strength decreased, if cycles and amplitude of structural synthetic fiber is same. Based on test results, structural performance of the concrete could know that is influence by pullout performance of fiber as well as various factor (fiber number, material properties etc).

Comfort Finishing on Synthetic Fibers (합성섬유에의 Comfort 가공)

  • Ryu Hyo-Seon
    • Journal of the Korean Society of Clothing and Textiles
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    • v.6 no.1
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    • pp.67-72
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    • 1982
  • 이 해설문에서는 최근 수년간 개발된 합성섬유에의 Comfort 가공 : Polyester 섬유의 촉감 개선, 소수성섬유에 있어서 친수성을 향상시키기 위한 화학적인 처리, 대전방지가공, 오염방지가공, 그리고 유연제에 대한 것을 문헌조사를 통해 소개하고 있다.

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Bond, Flexural Properties and Control of Plastic Shrinkage Cracking of Crimped type Synthetic Fiber Reinforced Cement Based Composites (Crimped Type 합성섬유로 보강된 시멘트 복합재료의 부착, 휨 및 소성수축균열제어 특성)

  • Won, Jong Pil;Park, Chan Gi;Lim, Dong Hee;Back, Chul Woo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.26 no.6A
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    • pp.1033-1039
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    • 2006
  • The purpose of this study are to evaluated bond, flexural properties and control of plastic shrinkage cracking of crimped type synthetic fiber with amplitude 6 mm and height 1.8 mm reinforced cement based composites. Bond and flexural test were conducted in accordance with the JCI-SF 8 and JCI SF-4 standard, respectively. The plastic shrinkage cracking test was conducted for evaluating the effect of fiber in reducing shrinkage cracking in cement based composites. Test results indicated that the crimped typel synthetic fibers performed significantly better than the straight type fiber in terms of interface toughness and pullout load and the crimped type synthetic fibers improved the flexural toughness of concrete. Also, the increasing the crimped type synthetic fiber volume fraction from 0.00% to 1.00% improved the plastic shrinkage cracking resistance. Specially, the effect of control of plastic shrinkage cracking is excellent at the more than 0.5% fibre volume fraction.