• 한국의류산업학회지
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• 제5권4호
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• pp.408-412
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• 2003

The micro structure of POY was modified and a wool-like touch yarn of composite fibers with different shrinkage was made. With this yarn 12 different fabrics with wool like touch were prepared. The characteristic physical property changes of the fabrics examined are as follows: 1. In all cases, the initial high shrinkage stages were observed in hot water treatment and the 3D images of complex multilayer of typical doubling fibers with different shrinkage were also observed in hot air treatment of 170C. 2. The tensile strength changes of satin and plain fabrics with the change of twist count showed similar behavior. However, WT's were slightly higher and RT's was lower in twill and satin fabrics than those in plain fabric. 3. Since a slight decrease of B's of twill fabric found with increasing twist count under given experimental condition, it could be influenced on the anti-drape stiffness was decreased and flexibility was increased. 4. A significant decrease of G values was observed in the twist count 800-1000 T.P.M However, in the twist count higher than 1000 T.P.M G values observed were kept nearly constant. 5. MIU of plain and twill fabrics showed a drastic decrease at the twist count higher than 1000 T.P.M.

• 한국염색가공학회지
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• 제6권3호
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• pp.8-14
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• 1994

A new flame retardant diphenyl butylamidophosphate (DPBAP) for PET fabric was synthesized and its flame retardancy was examined. The results have shown that PET fabrics treated by DPBAP(with DPBAP and on 4-10 %) show excellent flame retardancy. Since the DPBAP treated PET fabric show essentially no change in the drape stiffness and the tensile strength, it is believed that DPBAP is chemically stable in PET fabric. In addition to this, the washing fastness of DPBAP on PET fabric tested by the 5 times of water washing method also appeared to be excellent. Judging from the fact that DPBAP was synthesized from relatively cheap material as well as the above cited DPBAP properties as a good flame retardant, the potential of DPBAP to be developed as a commercial flame retardant for PET fabric seems to be high.

• 한국의류학회지
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• 제28권7호
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• pp.882-891
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• 2004

The purpose of this study was to improve dye effect and method in order to facilitate the use of persimmon juice dyeing. Silk fabrics were pad-dyed to 100% pick-up using padding machine after dipping in persimmon juice extracted from unripe persimmons indigenous to Jeju. The color of dyed silk fabrics by padding method was more even and repeatable than that by traditional hand method. Persimmon juice concentrations were 4 types 10, 25, 50 and 100%. The silk fabrics were pad-dyed to 100% pick-up and were repeatedly dyed two times and three times with 100% concentration. The higher the concentration, the more color deepened. UV Irradiation instead of sunlight was applied to color developing. Irradiation times were shortened to 1-8hrs. Color values which reguired 30-50 hrs. in sunlight irradiation. were obtained in 3-5 hrs. with UV irradiation. Tensile strengths of silk fabrics in UV irradiation decreased but not decreased in sunlight irradiation. Elongations of silk fabrics in sunlight irradiation increased but decreased in W irradiation. Drape stiffness increased up to three times.

• 대한가정학회지
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• 제26권2호
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• pp.29-38
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• 1988

The shearing properties, which belong to the mechanical properties of fabrics, are most closely related to the appearnace of weared clothes, formation and feeling of wearing. And they are the elements which show the sense of touch, the properties of drape, folds and recoveryk curve foring, and keeping up formation. Sorts of 156 commercial skil fabrics and polyester fabrics of Korean make for women's cloth were tested for shearing propreties. All samples were classified into for summer and for fall and winter wear. Then shearing properties were measured by kawabata's evluation method. In this study shear stiffness(G) and shear hysteresis (2HG, 2HG5) of shearing prperties were measurd, then G/W and 2HG/G which are concerning to formation of weared clothes and trnsformatio behavior wre properties. The results obtained are as follows: 1. Silk fabrics were higher than polyester fabrics in G and 2HG. Thickness and weight of the fabrics for summer were a third to a half of those of the fabrics for fall and winter, but shearing properties were almost the same in the two types of the fabrics. 2. Fabrics for fall and winter were lower than fabrics for summer in G/W and fabrics for summer were lower than fabrics for fall and winter in 2HG/G. 3. korean women's silk cloth was much lighter than Japanese kimono cloth in weight but thickness and shearing properties were almost the same in the two types of the clothes.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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• pp.39-40
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• 2010

건물이 대형화 고층화되어 감에 따라서 층고를 절감시킴과 동시에 장스팬을 구현할 수 있는 부재에 대한 요구가 늘어가고 있다. 비록 많은 연구자에 의해서 층고절감과 장스팬에 대한 요구를 만족시키기 위한 연구가 진행되고 있지만, 여전히 두 가지 요구사항을 동시에 만족시키는 효율적인 시스템이 부족한 실정이다. 본 연구에서 제안하는 파형웨브를 가진 프리스트레스 합성보는 시공성과 구조적인 성능을 동시에 향상시킬 수 있다. 시공과정에서 발생할 수 있는 비대칭 하중에 상대적으로 작은 부재를 가지고 강한 저항성을 발휘하여 시공성을 높일 수 있으며, 또한 동바리와 서포트 등의 가설부재를 줄임으로써 경제성도 확보할 수 있다. 파형웨브는 아코디언효과를 만들기 때문에 프리스트레스의 도입효율이 좋아져 더 큰 상향치올림를 유발시켜 부재의 처짐을 줄일 수 있다. 5개의 실험체를 제작하여 제안한 합성보의 효율성을 검토하였는데 그 주요한 변수로는 웨브와 플렌지에 용접된 형태와 drape point의 개수이다. 실험을 통하여 제안한 프리스트레스 합성보가 기존에 프리스트레스를 도입하지 않은 합성보 보다 큰 휨강성과 휨강도를 발휘한다는 것을 증명하였다.

• 한국잠사곤충학회지
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• 제28권1호
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• pp.66-71
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• 1986

생사 및 견직물에 대한 효소정련방법을 구명하기 위한 시험 결과 1. 각종 효소정련조건이 정련효율에 비치는 영향에 있어서 정련온도 및 정련용의 산도는 Papain 7$0^{\circ}C$, pH 5-6, Trypsin 4$0^{\circ}C$ pH 8, Alkalase 50-6$0^{\circ}C$, pH 8-9에서 각각 정련효율이 가장 높았다. 2. Alkalase 처리농도가 생사의 정련효율에 미치는 영향에 있어서 처리농도가 0.6-1.0g/l 범위에서 높이면 정련시간을 단축시킬 수 있다. 3. 생사의 Alkalase정련에 있어서 정련전처리(95$^{\circ}C$, 10분 1g/l NaHCO3) 또는 정련후처리(2%, o.w.f. sodium silicate, 8$0^{\circ}C$, 20분)를 행하면 정련효율을 향상시킬 수 있었다. 4. 효소정련견사의 강력(g/d), 신도 및 라우지네스 성적은 비누 정련견사에 비하여 향상되는 경향이었다. 5. Alkalase에 의한 효소정련에 있어서 생견직물의 조련정도가 정련효율에 미치는 영향은 조련연감율이 높을수록 효소정련효율이 높았으며 205 이상에서는 하부다에 및 크\ulcorner데신 모두 완전한 정련이 가능하였다. 6. 조련연감율을 20%로 한 견포에 대하여 3종의 효소정련을 실시한 경우 Papain 및 Trypsin 정련구는 Alkalase 정련구에 비하여 정련효율이 저하되었다. 7. 효소정련견포의 강건도는 크\ulcorner데신의 경우 1.27cm로서 대조인 비누소오다 정련견포 1.53cm에 비하여 17% 저하되었고 Drape 계수는 0.297로서 비누소오다 정련견포의 0.321에 비하여 7% 감소됨으로서 유건한 촉감이 향상되었다.

• 패션비즈니스
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• 제8권1호
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• pp.141-155
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• 2004

Chitosan, the natural biodegradable polymer derived from chitin by de- acetylation, has been widely applied to the textile finishing processes for excellent anti-microbial characteristic and handle improvement of fabric. The purpose of this study is to investigate the change of handle when cotton fabric is treated with chitosan-polyurethane mixed solution. The viscosity values of chitosan solutions were 8cps and 50cps, and the wet-pick-up% was maintained at 90%. In case of mixing with water soluble polyurethane, the mixture ratio of chitosan and polyurethane was settled on the solid content ratio of 1:0, 1:0.5, 1:1, 1:2. Also the change of physical properties by neutralization in NaOH solution was studied. The results can be summarized up as follows : 1. Extensibility(EM) and tensile energy(WT) of cotton fabric treated with chitosan are decreased, but bending rigidity(B) is remarkably increased. With the addition of polyurethane, the decrease of EM and WT is weakened and the increase of B is weakened. The case of neutralization is similar to the case of polyurethane addition. 2. By treating fabric with chitosan, FUKURAMI(Fullness and softness) is decreased, but KOSHI(Stiffness), SHARI(Crispness), HARI(Anti-drape Stiff ness) are increased. With the addition of polyurethane, the decrease of FUKURAMI is diminished and the increase of KOSHI, SHARI, HARI are diminished. 3. As the viscosity of chitosan solution increased, the air permeability value increased. The addition of polyurethane decreased the air permeability.

• 한국염색가공학회지
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• 제6권2호
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• pp.55-62
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• 1994

The mend for fabric products has been increased remarkably with increasing population, housings, mutistory buildings,...and etc. during the last two decades. However, since fabrics are highly combustible and can produce toxic gases during the combution, fabric products can result in serious human injury as well as financial damage. Acknowledged by this, a new phosphorus based flame retardant suitable for PET fabric has been synthesized by making use of the reaction of diphenyl chloro phosphate and hexamethylenediamine. Since the starting meterials are relatively cheap and the yield of this reaction is high (more than 90%), this reaction seems to be very effective as wall as very economic. By analyzing various spectrophotometric analysis data such as NMR, FT-IR, and Mass, this new flame retardant is identified to be N,N’-Bis(diphenyl chlorophosphoro)diamino hexane. In the mean time, DSC measurement has shown that the melting point and the boiling point of this material are around 115$^{\circ}C$ and around 40$0^{\circ}C$, respectively. The flame retardancy test done on the PET fabric processed by this flame retardant have shown excellent in times of flame contact, times of flame contact for washable. The most economical finishing condition estimated 10% in concentration of BDPDH, Moreover, it has been also found that the drape stiffness of the PET fiber processed by the flame retartant is changed very litter compared to the unprocessed original PET fabrics. Judging from this, the potential of this new phosphrdus based compond as a flame retardant for PET fabric seems to be high.

• 한국염색가공학회지
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• 제21권1호
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• pp.38-45
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• 2009

First of all, the properties imparted to PET fabrics are resistance to and recovery from creasing or wrinkling when wet or dry; high resistance to stretch in the filament yarns but not in the staple; high abrasion resistance; good texture and appearance; resistance to heat ageing; good chemical resistance and good resistance, behind glass, to sunlight. But, the low moisture regain of PET fabric conduces to static troubles in textile processing. Furthermore, garments made from PET may, during wear, develop electric charges which attract to the fabric particles of soil(dirt, swarf, dust) flying in the air, so that the cuffs of shirts, for example, become soiled quickly and are not easily laundered clean. The sericin constitutes 25$\sim$30％ of silk protein and surrounds the fibroin fiber with sticky layer that supports the formation of a cocoon. The useful biochemical properties of sericin protein are oxidation resistant, antibacterial, UV resistant, hydrophilic property, and good affinity with hydrophobic material. These properties can be used as an improving reagent or a coating agent for natural and synthetic fibers, fabrics, and other intermediate products. The sericin is also applied to cross-link, and can be blended with other materials. In this study, we modified the surface of PET fabric by mixture of sericin finishing agent; sericin, polyuretane binder and 1,2,3,4-butanetetracarboxylic acid (BTCA) cross-link agent. Also, we investigated the finshing effect; moisture regain, stiffness, handle, drape and electrostatic. The moisture regain of PET fabric treated with sericin finishing agent was higher than that of untreated PET fabric. As a result of evaluating influence about handle of PET fabrics treated with sericin finishing agent, it was confirmed that the sericin finishing agent could be use as a linen like finishing agent.

• 감성과학
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• 제13권2호
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• pp.391-402
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• 2010

전기방사한 나노섬유 웹은 가는 섬유직경과 수많은 미세공극 구조로 인해 우수한 투습성 및 차단 성능을 나타내며, 초박막 초경량의 특성을 갖는다. 이러한 특성 때문에 새로운 투습방수 소재로서 전기방사한 나노섬유 웹을 이용하고자 하는 시도가 이루어지고 있으며, 본 연구에서는 나노섬유 웹 처리소재의 역학적 특성을 측정하고 이를 기존 투습방수 소재와 비교함으로써 기능적 성능과 더불어 감성적 성능을 만족시키는 새로운 투습방수 소재 개발을 위한 기초자료를 제시하고자 하였다. 실험실 제작(lab-scale) 나노섬유 웹과 대량생산(commercial) 나노섬유 웹을 이용하여 웹 밀도와 기반 직물, 적층 구조, 라미네이팅 여부 등에 차이를 두어 다양한 전기방사 나노섬유 웹 처리소재를 제작하였다. 이들 시료에 대해 KES-FB system을 이용하여 역학적 특성을 평가하고, 이를 기존 투습방수 소재인 고밀도 직물, PTFE 라미네이팅 직물, PU 코팅 직물의 역학적 특성치와 비교하였다. 연구 결과, 실험실에서 제작한 나노섬유 웹 처리소재는 부피감이 있으면서 유연하였고, 대량생산된 나노섬유 웹을 라미네이팅한 소재는 신장 변형이 적은, 치밀한 구조의 소재인 것으로 나타났다. 또한 고밀도 직물과 실험실 제작 나노섬유 웹 처리소재는 낮은 인장선형성과 굽힘강성, 전단강성으로 유사한 거동을 나타내어, 기존 PU 코팅이나 PTFE 라미네이팅 직물에 비해 뻣뻣함이 덜하면서 유연하고 부드러운 태를 가지는 것으로 해석되었다. 따라서 전기방사 나노섬유 웹 처리소재가 일정 수준의 방수성을 확보한다면 기능적 성능과 감성적 성능을 모두 충족시키는 새로운 투습방수 소재로 이용될 수 있을 것으로 사료된다.