• 패션비즈니스
• /
• 제7권3호
• /
• pp.36-44
• /
• 2003

Chitosan treatment of textile fabrics has been studied to improve fabric characteristics and functions. Natural dyestuffs have been more actively employed in environment-conscious finishing products. In this study, chitosan treated cotton and nylon fabrics were prepared for dyeing with a few natural dyestuffs. These were Caesalpina sappan, Gardenia jasminoides, and cochineal in the form of powder. Hand-related physical and mechanical properties and luster characteristics were examined using the KES-FB series instruments and a set of luster measuring equipment. The chitosan treatment seemed to be more effective in terms of increasing stiffness for cotton fabric. Since cotton fibers have more -OH groups in the molecules, they provide more linkage sites with the chitosan than the nylon 6 fibers do.

• 한국감성과학회:학술대회논문집
• /
• 한국감성과학회 2003년도 춘계학술대회 논문집
• /
• pp.8-13
• /
• 2003

Frictional sound of 13 vapor permeable water repellent fabric by sound generator were recorded and analysed through FFT analysis. The frictional Sounds were quantified by calculating total sound pressure(LPT), the level range ΔL and the frequency difference Δf. Mechanical properties were measured by KES-FB. LPT values of specimens finished wet coating were higher than those of dry coating. Values for bending rigidity, shear stiffness, surface roughness and compressional recovery of polyurethane fabrics increased compared with the cire finished fabrics. Laminated fabrics had high values of frictional coefficient and low values of surface roughness. LPT showed significant correlation with compressional energy, weight and thickness. (ΔL) was highly correlated with compressional linearity, frictional coefficient, compressional recovery, and (Δf) with tensile linearity, compressional energy, thickness, and weight.

• 한국복합재료학회:학술대회논문집
• /
• 한국복합재료학회 2002년도 춘계학술발표대회 논문집
• /
• pp.17-21
• /
• 2002

A finite element method based on the two-dimensional progressive failure analysis is presented for characterizing the strength and failure of the unidirectional-fabric hybrid laminated composite joints under pin loading. The 8-node laminated shell element is incorporated in the updated Lagrangian formulation. Various failure criteria including the maximum stress, Tsai-Wu, Yamada-Sun, and combinations of them are used in conjunction with the complete unloading stiffness degradation method. For the verification, joint tests are conducted for the specimens with various geometries. Although there are some differences depending on the geometry, the finite element model using the Yamada-Sun or the combined Yamada-Sun and Tsai-Wu criterion predicts the failure strength best.

• 한국염색가공학회지
• /
• 제32권4호
• /
• pp.226-231
• /
• 2020

This study investigated effect of particle sizes of polymer binders for digital textile printing(DTP) pigment inks on touch of fabrics. The polymer binders were synthesized via miniemulsion polymerization of methyl methacrylate(MMA), butyl acrylate(BA), N-ethylolacrylamide(NEA) and methacrylic acid(MAA). The prepared binders were applied to black pigment inks and those black pigment inks were used to dye cotton fabrics. Then, color strength, rubbing fastness, stiffness, surface and bending properties of the dyed fabrics were investigated. Depending on the particle size of the polymer binder used, color strength, friction fastness, stiffness, surface and bending properties change. Generally, the larger the particle size of the polymer binder, the softer properties.

• 한국의류학회지
• /
• 제29권6호
• /
• pp.877-884
• /
• 2005

The importance and usefulness of a subjective evaluation of the sensorial properties of scoured silk fabrics is discussed. Silk fabric was treated at 12 different scouring rates and the scoured fabrics were used as specimens. Using paired comparisons, three trained subjects, evaluated seven subjective sensorial properties; softness, elasticity, drape, stiffness, crispness, and luster. A quad experimental design was adopted as an effective and reliable evaluation method. Results showed that some properties such as drape, luster were easily discriminated depending on the scouring rates whereas the smoothness was not easily discriminated. As the scouring rate increased, it was hard to discriminated the softness, drape, and stiffness, which indicates there is an optimum scouring rates to have a certain sensorial properties. It was suggested that these results should be applied to the manufacturing process.

• 로봇학회논문지
• /
• 제14권2호
• /
• pp.150-156
• /
• 2019

Haptic systems have been widely used for both virtual reality and augmented reality application including game, entertainment, education and medical sectors. Clothing designers and retailers initiated using AR and VR technologies to help the consumers find style with the perfect fit. Most of the developed augmented reality shopping is implemented by overlapping the image of the clothes on the customer so that he/she can find the fit. However, those are only visual information and the customer cannot experience the real size and the stiffness of the clothes. In this paper, we present the haptic upper garment which provides the haptic feedback to the user using cables. By controlling the length of the cable, the size of the clothes is set and by stiffness control, the compliance of the fabric is implemented. The haptic garment is modeled for precise control and the distributed controller architecture is described. With the haptic upper garment, the user's experience of the virtual clothes is greatly enhanced.

• Composites Research
• /
• 제12권3호
• /
• pp.8-16
• /
• 1999

탄소직포/탄소/SiC 복합재는 탄소직포/탄소 프로폼을 SiC의 유기전구체인 polycarbosilane에 다중함침 열처리하여 제조하였다. 더불어 탄소 섬유의 분율과 배열 형태가 다른 두 가지 종류의 저밀도 탄소/탄소 복합재 즉, 탄소직포($\thickapprox$55 vol%)/탄소 복합재와 chopped 탄소섬유($\thickapprox$40 vol%)/탄소 복합재를 $1700^{\circ}C$ 진공 분위기에서 용융 실리콘과 반응결합하여 고밀도의 탄소섬유/Si/SiC 복합재도 제조하였다. 이 반응 결합 공정 이전 각 밀도가 1.6g/$cm^3$인 탄소직포/탄소 복합재와 1.15g/$cm^3$인 chopped 탄소섬유/탄소 복합재는 반응결합 후 그 밀도가 각각 2.1g/$cm^3$로 증가하였다. 제조한 복합재는 전형적인 섬유강화 복합재의 파괴거동을 보였으며 반응결합 후 밀도와 stiffness 그리고 탄성 한계 강도 등은 모두 현저히 증가하였다. 3점 곡강도와 인장 시험으로 기계적 물성을 비교평가하였다. 탄소직포/탄소 복합재와 chopped 탄소섬유/탄소 복합재의 곡강도에 대한 인장 강도의 비는 약 1/3이었다. 탄소직포/Si/SiC 복합재의 밀도는 2.06g/$cm^3$, 최대 곡강도는 ~120 MPa, 탄성한계 응력은 ~80 MPa를 나타내었다.

• 감성과학
• /
• 제13권2호
• /
• pp.391-402
• /
• 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.

• 품질경영학회지
• /
• 제7권2호
• /
• pp.11-16
• /
• 1979

Recently towel cloth has a good prospect as sports wear and out fashion wear. So we will discuss correlational effects between towel cloth quality and it's physical properties. In order to investigate the effect of pile length on the stiffness and absorption of the towel cloth, some experiments have been carried out, and then analyzed by the correlation coefficient.

• 패션비즈니스
• /
• 제20권3호
• /
• pp.119-132
• /
• 2016

Weighting of silk fabrics have long been practiced in silk fabric trading based on the primary consideration of price-weight, and secondary one of quality improvement in handle, luster, and drape properties. Recent trend of practicing weighting of silk fabrics is, however, focused on the improvement of the handle, luster, drape, and other properties. During the finishing processes of synthetic fiber, nylon, comprising amide structure, include the use of tannic acid, especially in the dyeing. A multitude of studies are being implemented in terms of improving fastness to washing, fastness to light of dyed nylon product, or the light fastness of nylon 6 itself. In this study, the effects of various tannic acid treatments on the physical properties related to the handle of nylon 6 and silk fabrics are examined and reviewed. The effects of treatment condition of the tannic acid, e.g., the concentration of the aqueous tannic acid solution, treatment time, and temperature were investigated. As the concentration of the aqueous solution of tannic acid increased, the bending rigidity values of the silk and nylon 6 fabrics increased. The treated fabrics felt stiff to the touch. Within the mild conditions of bending employed in the bending measurement of KES, nylon 6 treated fabric specimen exhibited a trend of improvement of bending resiliency within the range of small bending deformation. The weight of treated fabrics have all increased. The air-permeability values decreased as the treatment concentration increased. However, the decrease tendency of air permeability values may be alleviated by adjusting the fabric count during the tentering or expanding processes, either by tension adjustment or heat treatment. Optimum conditions of the treatment for nylon 6 are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1, and those for silk fabric treatment are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1. The treatment conditions will lead to the improvement in the properties of fabrics for summer.