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니들펀칭 라미네이팅 부직포의 특성화 연구(I) -포구조와 기공특성-
복진선,홍철재,주창환 한국섬유공학회 1998 한국섬유공학회지 Vol.35 No.11
The purpose of this study was to investigate the fabric structure and pore size distribution of the needle punching laminated nonwovens (NPLN) produced by changing the number of layers and punching density. The morphological structure and pore characteristics of NPLN fabrics were tested and the results obtained are as follows: The morphological structure of NPLN fabrics showed that the barb needles could penetrate perfectly up to 4 single layers of 125 g/$m^2$ fabric weight. However, the needle did not completely penetrate above 400 punches/$\textrm{cm}^2$ punching density. The maximum and mean pore diameters decreased with increasing number of layers, while the mean pore diameter of NPLN decreased as the punching density increases up to 300 punches/$\textrm{cm}^2$ with 2 layers or 3 layers and then increased slightly above this. The minimum pore diameter of NPLN did not vary significantly with the processing variables studied.
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이은주,복진선,홍철재,주창환 한국섬유공학회 2000 한국섬유공학회지 Vol.37 No.1
Texturing is carried out on synthetic filament yarns to achieve appearance and physical characteristics similar to spun yarns. These characteristics are affected by processing parameters and supply yarn properties. We have produced pin and air-jet textured (PAT) yarns and air-jet textured (AT) yarns with different processing parameters, such as overfeed ratio and air pressure, to characterize the splitting behavior and physical properties of split-type microfine polyester/nylon (P/N) filament yarns. PAT and AT yarns had more loops and entanglement formation with increase in overfeed and air pressure, and it was shown that the PAT yarns had more compact at the yarn core and exhibited a greater number of loops than the AT yarns. The fiber splitting of RAT and AT yarns occurred at 10% overfeed, 7kg/$\textrm{cm}^2$ and 20% overfeed, 8kg/$\textrm{cm}^2$, respectively. The tenacity and breaking extension of two ir-jet textured yarns were generally reduced with the increase of overfeed and air pressure as compared with those of supply yarns. But the tenacity of AT yarns was generally higher than that of PAT yarns, while the braking extension of AT yarns was lower than that of PAT yarns, as the overfeed and air pressure were increased. The instability of PAT and AT yarns increased with increasing overfeed and air pressure. But the instabilities of PAT yarns were higher than those of AT yarns.
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전상후,복진선,박재우,전두환,Chun, Sang Hoo,Bok, Jin Sun,Park, Jae Woo,Chun, Du Hwan 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.3
This study aimed to investigate a durability test of a textile composite belt for use in steel slitting. The belt was developed by combining scrim fabric and a nonwoven sheet composite with resin impregnation and a silicon finish. Because resin impregnation is necessary for a textile composite slitting belt, this study focussed primarily on examining two different types of resin influencing the belt durability, namely, thermosetting resin PVB and thermoplastic resin PET. The accelerated test conditions were obtained through a performance comparison with reference belt (50 hr with 500N load). The results indicate that thermosetting PVB is more suitable for the overall durability of a belt under repeated load conditions with friction when compared to thermoplastic PET, although PVB tends to increase the brittleness in comparison when compared to PET.
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3성분 섬유 혼용에 의한 Wet-laid 부직포의 구조 및 공학적 성능 평가
차주희,김북성,복진선,전한용,Cha, Ju Hee,Kim, Book Sung,Bok, Jin Seon,Jeon, Han-Yong 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.2
In this study, polyarylate nonwoven fabrics were manufactured by a wet-laid process by using viscose rayon and amorphous PET fiber as binding fibers. The engineering performance was evaluated after calendering to obtain a compact structure. From the polyarylate wet-laid nonwoven fabrics, it was confirmed that polyarylate fiber and binding fibers were mixed evenly. Through calendering, the permeability and pore size of the wet-laid nonwoven fabrics were significantly reduced owing to the compact structure. The bending strength and tensile strength increased through calendering, but the tensile elongation decreased. From an analysis of the tensile properties, monolayer wet-laid nonwoven fabrics showed better evenness than multilayer wet-laid nonwoven fabrics. In addition, multilayer wet-laid nonwoven fabrics showed a higher anisotropy than monolayer wet-laid nonwoven fabrics.
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진공압밀 공법용 등방성 스펀본드 지오텍스타일의 성능평가
안승재,김진일,복진선,이현석,전한용,Ahn, Seung Jae,Kim, Jin Il,Bok, Jin Seon,Lee, Hyun Seok,Jeon, Han-Yong 한국섬유공학회 2014 한국섬유공학회지 Vol.51 No.4
In this study, the performance of isotropic spunbonded geotextiles, which are used in vacuum consolidation, was tested both in the laboratory and in the field. Two kinds of isotropic spunbonded geotextiles were prepared. One was a matrix/binder structure using low-melting polyethylene terephthalate (PET) copolymer (co-PET) fibers for web bonding. The other consisted of sheath/core (co-PET/PET) fibers. Through the index test, it was seen that the performance of the sheath/core structure isotropic spunbonded geotextiles was better for use with vacuum consolidation than the matrix/binder structure isotropic spunbonded geotextiles. However, the drainage performance test, which simulates a construction environment, showed that the sheath/core structure isotropic spunbonded geotextiles were unstable. The matrix/binder isotropic spunbonded geotextiles showed better results for the drainage test and the field test results for the matrix/binder isotropic spunbonded geotextiles showed that they were suitable for use with vacuum consolidation.
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반사형 단열재의 표면방사율에 따른 중공층의 열저항에 관한 연구
권영철(Kwon, Young-Cheol),주진갑(Joo, Jin-Gap),조희석(Jo, Hui-Seok),복진선(Bok, Jin-Seon),박창석(Park, Chang-Seok) 한국건축친환경설비학회 2011 한국건축친환경설비학회 논문집 Vol.5 No.2
Reflective insulation systems are fabricated from aluminum foils with a variety of backings, such as kraft paper, plastic film, polyethylene bubbles, or cardboard. Emittance (or emissivity) refers to the ability of a material’ surface to emit radiant energy. All materials have emissivities ranging from zero to one. The lower the emittance of a material, the lower the heat (infra-red radiant energy) radiated from its surface. Aluminum foil has a very low emittance, which explains its use in reflective insulation and radiant barriers. This study indicates the thermal resistance of the reflective air space in "building energy saving guideline" should be changed to reflect its realistic value which is 3 times higher that in the guideline. The surface emittance of reflective insulation should also be under 0.05, which is examined by authorized organizations or laboratories and checked by construction supervisors.
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