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면/스판덱스 직물의 텐터링 신장률에 따른 세탁 후 변형
석혜준,정혜원,김효정,권진,Seok, Hye-Joon,Chung, Hae-Won,Kim, Hyo-Jeong,Kwen, Jin 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.5
The purpose of this study was to determine the effects of laundering on the shrinkage and elasticity of cotton/spandex fabrics, in which one group was enhanced 5%, the other group was 10%, the third group was 15% during tentering and the final group was not enhanced but dyed with a reactive dye. The laundering conditions were varied in washing temperature, drying methods and number of wash cycles. Shrinkage and elasticity as the extension and elastic recovery after stretching at a force of 15 N for cotton/spandex fabrics were investigated. The fabrics which were treated with greater enhancing during tentering, showed greater shrinkage, lower extension and less elastic recovery after repeated washings and dryings. The cotton/spandex fabric which was enhanced 5% during tentering showed the least amount of deformation after 20 washings. The greatest deformation of the cotton/spandex fabrics occurred after the first wash, but the increases in shrinkage and elasticity were reduced as the number of wash cycles increased. The fabrics which were washed at $20^{\circ}C$ and air dried showed lower shrinkage and lower extension with the force of 15 N than the fabrics washed at $40^{\circ}C$ and dried in the tumble dryer. This showed that drying temperatures had a greater affect on the deformation of the cotton/spandex fabrics than the washing temperatures.
Space Syntax를 이용한 도심 토지이용특성 분석
석혜준(Seok Hye-June),이만형(Lee Man-Hyung) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.5
Applying spatial analysis methods derived from Space Syntax theories, this study intends to analyze major land-use patterns in the Central Business District(CBD) areas. In specific, it focuses on quantifying the relationship between the spatial factors and land-use characteristics in Cheongju CBD. After repeated experiments between spatial integration and CBD land use patterns, this study finds that sales, service, business, and residential values are statistically significant. The same trends are repeated between spatial integration and zonal areas. Lastly, this study reconfirms the fact that the most profitable functions seem to locate along the highest order of boulevards. These results imply that there exists dynamic relationship between spatial integration and official land price in Cheongju CBD areas.
텐터 신장률이 다른 면/스판덱스 능직물의 반복세탁에 따른 역학적 특성 및 태 비교
정혜원,권진,김효정,석혜준,Chung, Hae-Won,Kwon, Jin,Kim, Hyo-Jeong,Seok, Hye-Joon 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.4
The effects of the tentering-extension rates and repeated washing on the mechanical properties and hand values of cotton/ spandex twill were examined. A 3% spandex containing cotton twill was treated by tenter extension at different rates of 0%, 5%, 10% and 15%. The processed fabric with a 0% extension rate was also dyed using a reactive dye. The KES-FB system was utilized to measure the mechanical properties of the twill, and the basic and total hand values were determined using a KN-201-MDY and KN-301-WINTER, respectively. The fabrics treated with greater tentering extension and dried in a clothes tumble dryer showed lower bending and shear properties, and became softer and smoother. The greatest change in the mechanical properties and hand values occurred after the first wash, but the differences in the washed and unwashed state decreased with increasing number of wash cycles. These results show that cotton/spandex twill should be extended 5% during tentering to yield less deterioration of the T.H.V., and be dried in a clothes tumble dryer to maintain a soft and smooth hand without affecting the shrinkage and elasticity.