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RISS 인기검색어
- 검색키워드
- 저자 : 지동선 (검색결과 2 건)
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투습성은 의복의 쾌적성 평가에 있어서 매우 중요한 인자중의 하나이다. 본 연구에서는 의복원단의 투습성을 평가하기 위하여 Fourt와 Whelen의 투습이론을 근거로 하여 직물의 투습성에 영향을 주는 요인들을 분석하고, 투습도 측정장치를 설계제작해서 소모직물을 시료로 하여 Fick의 법칙에 따르는 투습량을 측정하고 투습저항을 계산하여 직물의 두께, 클로드 커버, 고유투습저항, 기공직경 (pore diameter)및 평면기공률 등의 직물모수가 투습저항이 미치는 영향을 실험적으로 규명했다. 그 결과 소모직물의 투습저항을 종속변수로 하고 직물모수를 독립 변수로 하는 회전식을 구할 수 있었고, 직물에서 수증기 전달의 주된 통로가 될 것으로 믿어지는 기공을 가상하여 기공직경과 평면기공률을 실의 직경과 직물밀도로 부터 계산할 수 있었으며, 또한 직물모수로부터 Whelan이 정의한 직물의 고유투습저항을 구하여 본 실험에서 측정한 투습저항치와 고유투습저항치 간의 실험식을 구하므로써 직물설계에서 정해진 모수만 가지고도 설계된 직물의 투습저항을 추정평가 할 수 있는 자료를 제시했다. The transfer of water vapor from the skin through clothing is an important factor in human comfort. This factor is a resistance to the diffusion of water vapor through textiles. In this thesis, the present writer made a tester measuring the water vapor permeability in application with Fick's law in order to evaluate the water vapor transfer resistance of woven fabrics based on Whelan's and Fourt's theory. With this tester some experiments were carried out for worsted fabrics made of ring spun yarns under the environmental conditions. The experimental results were analyzed for the various parameters of fabric, and can be summarized as follows: The pose diameter and the open free area can be derived from the diameter f yarn and fabric count. The regression equation which is able to evaluate the water vapor transfer resistance (R_(F)) by Fick's law, was derived from the intrinsic resistance (R_(W)) calculated from the specifications of woven cloth construction by simple regression analysis. The water vapor transfer resistance of fabric is a dependent variable, and three parameters of fabric (i.e. thickness, porosity, and open free area) are simultaneous independent variables. The second order regression model can be fitted from the method of least squares by response surface analysis. The water vapor transfer resistance of woven fabric increases in proportion to its thickness, cloth cover, and intrinsic resistance, on the contrary it decreases in proportion to its open free area and pore diameter. And it is considered to be desirable to weave into plain fabrics by the fined yarns more than N_(m) 2/72 in order to accelerate to the rate of water vapor transmission.
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綿絲의 撚係數가 單係强力과 伸度에 미치는 影響에 관한 硏究
Strength and elongation have long accepted by many as the most vital characteristics of yarn, Tensile and elongation in physical properties of cotton yarn can be evaluated from single end strength and elongation at break, In this thesis, as the results of single end test, single end strength and elongation with varying yarn count and T.M.(Twist Multiplier) were measured by experiment and also the effects of T.M. on the single end strength and elongation were investigated in various yarns, thus conclusions could be found as follows: 1. Optimum twist multipliers at maximum single end strength of open-end and ring spun cotton yarns were found to close at the point of T.M.6.3 in O.E.(open-end yarn) 10Ne,T.M.5.6 in C.D.(carded yarn} 20Ne,T.M.5.5 in C.D.30Ne and 40Ne,T.M.5.9 in C.M.(combed yarn)58Ne. 2. Single end strength of open-end and ring spun cotton yarns decreased as the yarn became finer. 3. T.M. at the minium single end strength CV% of cotton yarns was found to occur at the points of T.M.6.3 in O.E.10Ne, T.M.4.0 in C.D.20Ne, T.M.4.4 in C.D.30Ne, T.M.4.7 in C.D.40Ne, T.M.3.9 in 58Ne. 4. Elongation at break of open-end ring spun cotton yarns increased as the yarn became coarser. 5. Elongation at break of cotton yarn was found to increase whenever T.M was increased in C.D. 30Ne and C.M. 58Ne, but at first in O.E.10Ne and C.D.20Ne it increased, afterwards it was found to decrease suddenly at the points of T.M. 9.5 in O.E.10Ne, T.M.8.9 in C.D.20Ne.
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