• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.57-60
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• 1998

전도성 고분자들은 그 도전성과 제전성에 주목을 받아 다양한 공액계에 유래하는 많은 기능이 발견되면서 가공성과 안정성이 개선된 새로운 폴리머가 출현되어 다양한 용도 전개가 실현되고 있다. 특히 전도성을 지닌 의류소재 개발을 위한 다양한 고분자들 중 최근 합성이 쉽고 가격이 싸며 우수한 전도도와 물성을 부여하는 Polyaniline에 관한 관심이 집중되고 있어 이에 관한 활발한 응용 연구가 진행되고 있다. (중략)

• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.264-267
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• 1998

고속용융방사는 권취속도의 고속화에 의해 공정시간 및 제조비용 절감을 통해 생산성을 극대화할 수 있어 산업적으로 아주 중요한 섬유 형성 공정이다 또한 생산성의 향상을 위해 방사속도가 증가하는 추세인데, 이러한 경향은 공정-구조-역학적 성질의 관계를 정립해야 하는 필요성을 증가시키고 있다. (중략)

• Proceedings of the Korean Fiber Society Conference
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• 2003.10b
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• pp.114-117
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• 2003

Conventional heating the heat source cause the molecules to react from the surface toward the center so that successive layers of molecules heat in turn. The product surfaces may be in danger of over heating by the time heat penetrates the material. Microwave, however, produce a volume heating effect. All molecules are set in action at the same time. It also evens temperature gradients and offers other important benefits such as selective heating. (omitted)

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.75-78
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• 2001

폴리에스테르나 나일론의 세섬도 섬유를 사용한 소재가 실크와 같은 외관, 유연한 태 등의 감각적으로 우수한 특성을 가지기 때문에 최근에 섬유업계에서 큰 관심을 모으고 있다 이와 같은 세섬도 섬유는 부가가치를 높이기 위해 통상보다 복잡한 마무리 가공이 필요하며 염색가공에 있어서도 일반사 나일론보다 그 염색거동이나 견뢰도에 있어서 보다 엄격한 염료나 약품의 선택이 중요하다. (중략)

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.79-82
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• 2001

합성섬유 중에서는 폴리에스테르 다음으로 많이 생산되는 나일론 섬유는 최근에는 새로운 용도로서 극세 혹은 초극세 나일론섬유를 제조하여, 신감성, 고부가가치를 부여하는 차별화 상품으로서 이용을 개발ㆍ검토하고 있다. 이러한 세섬도 섬유를 사용한 소재가 폴리에스테르(PET)의 경우에는 형태 안정화를 위해 열처리를 실시하는데, 나일론의 경우도 공정 중에서 다양한 열의 영향을 받음으로써 염색성이나 화학적 성질에 변화가 생긴다. (중략)

• Journal of the Korea Concrete Institute
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• v.27 no.2
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• pp.157-167
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• 2015

Cement composites subjected to high-velocity projectile shows local failure and it can be suppressed by improvement of flexural toughness with reinforcement of fiber. Therefore, researches on impact resistance performance of cement composites are in progress and a number of types of fiber reinforcement are being developed. Since bonding properties of fiber with matrix, specific surface area and numbers of fiber are different by fiber reinforcement type, mechanical properties of fiber reinforced cement composites and improvement of impact resistance performance need to be considered. In this study, improvement of flexural toughness and failure reduction effect by impact of high-velocity projectile have been evaluated according to fiber type by mixing steel fiber, polyamide, nylon and polyethylene which are have different shape and mechanical properties. As results, flexural toughness was improved by redistribution of stress and crack prevention with bridge effect of reinforced fibers, and scabbing by high-velocity impact was suppressed. Since it is possible to decrease scabbing limit thickness from impact energy, thickness can be thinner when it is applied to protection. Scabbing of steel fiber reinforced cement composites was occurred and it was observed that desquamation of partial fragment was suppressed by adhesion between fiber and matrix. Scabbing by high-velocity impact of synthetic fiber reinforced cement composites was decreased by microcrack, impact wave neutralization and energy dispersion with a large number of fibers.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.05a
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• pp.213-214
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• 2012

This paper presents basic study to develop high performance concrete for concrete filled tube with addition content of steel fiber. In this study, all mixtures was added to nylon fiber (1.5 kg/㎥) and steel fiber was mixed by 0, 20 and 40 kg/㎥ respectively. To evaluate the property of high performance concrete was used to various test methods which were slump flow, air content, U-box test, O-lot test and L-flow(to 300 mm, 500 mm). Also, compressive strength test was measured by ages.

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.191-194
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• 2001

Among the many electrically conducting materials, Polypyrrole (PPy) is one of the most promising, intrinsically conducting polymers (ICP) due to its high conductivity, oxygen resistant and good environmental stability. To enhance the mechanical properties, the researchers have studied the polymer-textile composites. These composites can provide the both excellent physical properties and electrical conductivity. (omitted)

• The Korean Journal of Rheology
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• v.10 no.2
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• pp.57-64
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• 1998

A pultrusion resin impregnation (PRI) die, which has been developed recently in our laboratory, was used to pre-pare various composite system. The continuous fiber reinforced composites of glass fiber/polypropylene(GFPP) and glass fiber/polyamide 6 (GFPA) were first manufactured by means of the PRI die and then cut into chopped pellets of predet-ermined length. These pellets and either virgin or modified thermoplastic resin were melt-mixed by a twin screw extruder to prepare GF/PA/PP and GF/PA/PPMA system. The mechanical properties of these blends were investigated and discussed in terms of their morphological observations. These preliminary results revealed that this new impregnation die could be suc-cessfully applied to produce prepregs suitavle for the final shaping process.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2010.03a
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• pp.174-175
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• 2010