• Title/Summary/Keyword: Inorganic Fiber

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Development of a flexible solar cell fiber by using an organic-inorganic hybrid materials (${\codt}$ 무기 하이브리드 재료를 이용한 플렉서블 태양전지 섬유의 개발)

  • Song, Jun-Hyung;Kim, Joo-Yong;Park, Jung-Hyun;Kim, Gu-Young;Kim, Young-Kwan
    • 한국신재생에너지학회:학술대회논문집
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    • 2007.06a
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    • pp.299-301
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    • 2007
  • An organic-inorganic hybrid solar cell fibers with characteristics such as formability, low-cost and tailorability was developed by deposition of C60 and CuPc on fiber surface. In spite of some variation according to the temperature of ITO deposition, the maximum open circuit voltage of 0.39V was attained at $150^{\circ}C$(1000end). The resulting solar cell showed the performances Isc=0.482, Voc=0.320, FF=0.285 ${\eta}_{e}=0.044$% which are comparable to one of other types of solar cells in literature.

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Flame Retardant Properties of Basalt Fiber Reinforced Epoxy Composite with Inorganic Fillers (무기 필러가 첨가된 현무암섬유 강화 에폭시 복합재료의 난연 특성)

  • Mun, So Youn;Lee, Su Yeon;Lim, Hyung Mi
    • Composites Research
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    • v.32 no.6
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    • pp.368-374
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    • 2019
  • Basalt fiber reinforced epoxy composites with inorganic filler (BFRP-F) such as Mg(OH)2 (magnesium hydroxide), Al(OH)3 (aluminum hydroxide), Al2O3 (aluminum oxide) and AlOOH (boehmite) were prepared by hand lay-up and hot pressing. The combustive properties of BFRP-F were improved comparing with basalt fiber reinforced epoxy composite (BFRP) without inorganic filler. At a 30 wt% resin content, the limited oxygen index (LOI) of BFRP is 28.9, which is higher than that of epoxy (21.4), and the LOI of BFRP-F is higher than that of BFRP. The BFRP-F showed the lower peak heat release rate (PHRR), total heat release (THR) and total smoke release rate (TSR) than those of BFRP. We confirmed that the flame retardant properties of the composite were improved by the addition of inorganic filler through the dehydration reaction and oxide film formation.

A Study on the Physical Characteristics of Repair Mortar Using Sepiolite (Sepiolite를 보강섬유로 사용한 단면보수 모르타르의 물리적 특성변화에 관한 연구)

  • Lee, Mun-Hwan;Song, Tae-Hyeob;Lee, Sea-Hyun;Park, Seung-Ho
    • Proceedings of the Korea Concrete Institute Conference
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    • 2006.05b
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    • pp.337-340
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    • 2006
  • Utilize several kinds of reinforcement fibers to control workability and surface crack in occasion of mortar used in dilapidated concrete section repair public law. Polypropylene or poly vinyl alcohol that is hydrophilic fiber etc. is used much usually with this reinforcement fiber. Reinforcement fiber does important action that control crack that enhances coherence between material and happens at dry contraction. In this study, wished to use Sepiorite that inorganic materials and affinity such as cement are excellent nature inorganic world fiber and improve repair mortar performance. In this study, as reinforcement fiber, wished to grasp physical characteristics that uses Sepioraiteu and happens this time and grasp application possibility of concrete's repair mortar.

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Analysis of the Flowability for Organic·Inorganic Fiber with the Variation of Length (유·무기 섬유 길이조합변화에 따른 섬유 보강 모르타르의 유동성 분석)

  • Park, Yong-Jun;Kang, Byung-Hoi;Lee, Hong-Kyu;Jo, Man-Ki;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.128-129
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    • 2014
  • In this study, flowability of the mortar added with length change and combination of steel and inorganic fiber has been tested to evaluate the performance of fiber-reinforced mortar. The following results could be made as the conclusion. Early age flow of the mortar has been decreased when fibers added. Slump also decreased with the adding of fibers. For the air content, comparing with Plain, all the specimens with fibers showed higher air content than Plain., Addition of every kinds fibers showed the similar EIS test results.

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Effect of Shearing on Crystallization Behavior of Nylon 6/Silver Nanocomposites (전단조건이 나일론 6/은 나노복합소재의 결정화거동에 미치는 영향)

  • Chae, Dong-Wook;Oh, Seong-Geun;Kim, Byoung-Chul
    • Proceedings of the Korean Fiber Society Conference
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    • 2002.04a
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    • pp.321-324
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    • 2002
  • Recently, organic-inorganic nanocomposites have attracted great interest from researchers since they frequently exhibit unexpected hybrid properties synergistically derived from two components[1]. The addition of highly dispersed inorganic nano-sized fillers permits improvement of certain properties of polymers as compared with conventional particulate composites; increase of modulus and strength, improved barrier properties, increase in solvent and heat resistance, and good optical properties[2]. (omitted)

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A solar Cell Fiber using Semi-conductive Polymers (반도체형 고분자를 이용한 태양전지섬유)

  • Song, Jun-Hyung;Kim, Joo-Yong
    • Textile Coloration and Finishing
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    • v.20 no.1
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    • pp.44-47
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    • 2008
  • Organic semi-conductive materials have characteristics such as the advantages of easy formability, low-cost and diversity along with moderate semi-conductive properties. In this paper, we developed a flexible organic-inorganic hybrid solar cell fiber. First, we made a solar cell on the glass and attached the solar cell on the glass fiber similarly. In the latter case, thermal deposition method was employed in order to effectively apply ITO onto fiber surface. The amount of ITO was controlled by varying the temperature from 25, 150 to $300^{\circ}C$. Optimum result was obtained at $150^{\circ}C$ where maximize the deposition amount without significant decomposition of ITO. Despite of maximum open circuit voltage of 0.39V, the resulting current was quite unstable and weak, limiting realistic applications. It was, however, concluded that the flexible solar cell fiber developed showed a possibility of low-weight application from functional clothing for military to space suit mainly due to flexibility and thus wear ability.

Rheology Performance of fiber-Reinforced Mortar with Length Combination of Organic and Inorganic Fiber (유·무기 섬유 길이조합변화에 따른 섬유보강 모르타르의 레올로지 특성)

  • Kang, Byeog-Hoe;Park, Yong-Jun;Jo, Man-Ki;Lee, Gun-Cheol;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.130-131
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    • 2014
  • In this study, Analyse about flowability for fiber-reinforud mortar has been focused. Organic and inorganic fibers with different length have been combinatiorly used. The results showed using combination length of the fibers decrease the flowability, comparing with plain, fracture styess has been increased, Results also showed when several kinds of fibers used together showed the highest fracture stress.

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The Strength and Flowing Properties of PVA Fiber Mortar using the Low-carbon Inorganic Composite according the Replacement Ratio of Fine Aggregate (잔골재 치환율별 저탄소 무기결합재를 사용한 PVA섬유 모르타르의 유동 및 강도특성)

  • Park, Jong-Pil;Moon, Ji-Hwon;Kim, Gyu-Yong;Lee, Sang-Soo;Song, Ha-Young
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.89-90
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    • 2012
  • This study analyzed and compared the flowing and strength properties of mortar depending on the different fine aggregate replacement ratios and whether or not the mixing of PVA fiber was applied. blast furnace slag, red mud, and silica fume that are industrial by-products were used for the analysis. The findings showed that higher replacement level of fine aggregate increased air content while decreasing the table flow. In addition, in case of the compressive strength, Plain mortar and PVA fiber with the replacement ratios of 15% and 30%, respectively showed the greatest strength development.

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Changing Fundamental Properties of HPFRCC Depending on Combination and Content of Organic and Inorganic Fibers (유·무기섬유 혼입비 및 혼입율 변화에 따른 HPFRCC의 기초물성 변화)

  • Lee, Jea-Hyeon;Moon, Byeong-Yong;Park, Yong-Jun;Jo, Sung-Jun;Kim, Jong;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.28-29
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    • 2016
  • Recently, the attention on high tensile, and high performance cementitious composite (HPFRCC) which can minimize the damage from explosion of inflammable gas and chemicals has been increased. In spite of outstanding tensile performance, HPFRCC has the drawbacks of fiber ball, undesirable cost, and high autogenous shrinkage. therefore, in this research, to develop the optimum HPFRCC, the fundamental properties and autogenous shrinkage of HPFRCC was analyzed depending on various combination and content of organic and inorganic fibers.

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