• Title/Summary/Keyword: Fabric properties

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Measurement of Thickness of Still Air Layer above Fabrics (직물의 표면 정지 공기층의 두께 측정)

  • 나영주
    • Journal of the Korean Society of Clothing and Textiles
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    • v.21 no.7
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    • pp.1117-1123
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    • 1997
  • This paper describes the measurement of thickness of still air layer above fabrics and its relationship to structural properties of fabrics. Rayon fabrics - of both filament and spun - and wool nylon blended fabrics varied in terms of surface hairiness were used. Temperature and relative humidity above fabrics were measured at the various distances from the fabric surface. Increase in the thickness of fabric, fabric weight, yarn count, and crimp resulted increase in thickness of still air layer above fabric. Surface hairiness of fabrics as well as the structural properties were found to be related with the thickness of still air layer above fabrics.

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A Study on the mechanical properties of fabrics by fabric trend themes -2002/03 Fall & Winter season for women′s wear- (소재 트랜드 테마별 직물의 역학적 특성 연구 -2002/03 여성복 추동 시즌을 중심으로-)

  • 주정아;유효선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.8
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    • pp.958-968
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    • 2003
  • The purpose of this study was to clarify the different mechanical properties of fabrics among the theme groups classified by fashion fabric trend. This study can be useful for fabric marketers and planners to design new products. In order to carry out this study, the fabric samples of representative theme for‘2002/03 F/W fashion fabric trend were collected from a fashion company and were measured to analyze the mechanical properties, hand value(H.V) and total hand value(T.H.V) by KES-FB System. The results were as follows. 1. The theme-A of‘Luxury, Elegance’was consisted of wool, rayon and PET and had a lower B, 2HB of bending properties and a lower G and 2HG5 of shear properties. The theme-B of‘Technical, Functional’was consisted of synthetic fibers such as PET, PA, PU and elastic fiber and had a higher MIU and a lower MMD, SMD of surface properties. The theme-C of‘Vintage, Aged’was consisted of mostly cotton and had the highest B and 2HB. The theme-D of‘Fancy, Airy’was consisted of mostly woolen wool, polyacryl and polyamide and had a high MMD and SMD of surface properties and a high LC and RC of compression properties. 2. As the results of analyzing H.V and T.H.V through KES-FB system, the theme-A showed a higher Smoothness and lower Stiffness. The theme-B had a lower Smoothness, Fullness, Soft feeling and T.H.V and the theme-C had the highest Stiffness. The theme-D showed the highest Fullness and Soft Feeling but the lowest Stiffness.

Modification of Tencel Fabric Treated with Chitosan ( I ) - Change of Physical Properties - (키토산처리에 의한 텐셀 직물의 개질기능화(I) - 물성 변화를 중심으로 -)

  • 배현숙;육은영
    • Textile Coloration and Finishing
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    • v.14 no.1
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    • pp.18-26
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    • 2002
  • Chitosan has reactive amino and hydroxyl groups which can be used to chemically alter its properties under the mild reaction conditions. Thus the cationization of Tencel with Chitosan is effective to modify the fabric. To investigate the modified properties of Tencel fabric, the tests were performed under the several finishing process with enzyme/glutaraldehyde/softener. The internal structure of Tencel which has the structure of cellulose II wasn't changed by enzyme, chitosan and crosslinking agent treatment and the thermal stability was improved by chitosan and crosslinking agent treatment. Wrinkle recovery angle under the dry condition increased highly until $0.1\textrm{mol}/\ell$ of glutaraldehyde concentration, and then decreased. Tensile strength of modified Tencel fabric decreased with increasing of weight loss, but it was improved more or less by chitosan, crosslinking agent and softener. Moisture regain was improved by enzyme and chitosan treatment. And antibacterial activity showed nearly 100% on Tencel fabric treated with 0.5% chitosan and adsorption of metal ion increased with increasing of chitosan concentration.

Properties of cotton fabric treated with $TiO_2$/PEG ($TiO_2$/PEG처리 면직물의 특성)

  • 김정진;장정대
    • Textile Coloration and Finishing
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    • v.14 no.3
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    • pp.53-58
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    • 2002
  • Cotton fabric was treated with TiO$_2$-PEG600 mixed solution by pad-dry-cure and wet-fixation process to improve the performance properties as well as antibiosis effect and its laundering durability. In this paper, the effects of concentration of $TiO_2/PEG$ and fixation process were investigated on laundering durability and properties of cotton fabric treated with glyoxal. As the concentration of $TiO_2/PEG$ increased fixation, W.I., K/S of treated cotton fabric increased. Application of wet-fixation method provided a further improvement in fixation, laundering durability of treated cotton fabric.

Tensile Properties of Carbon-Glass/Epoxy Hybrid Laminates Produced by VARTM (VARTM 법으로 제작한 탄소-유리/에폭시 하이브리드 적층재의 인장 특성)

  • Kim, Yonjig
    • Korean Journal of Metals and Materials
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    • v.49 no.10
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    • pp.760-765
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    • 2011
  • This paper presents a study of the tensile behavior of carbon and glass fiber reinforced epoxy hybrid laminates manufactured by vacuum assisted resin transfer molding (VARTM). The objective of this study was to develop and characterize carbon fiber reinforced plastic hybrid composite material that is low cost and light-weight and that possesses adequate strength and stiffness. The effect of position and content of the glass fabric layer on the tensile properties of the hybrid laminates was examined. The strength and stiffness of the hybrid laminates showed a steady decrease with an increase of the glass fabric content this decrease was almost linear. Fracture strain of these laminates showed a slight increasing trend when glass fabric content was increased up to 3 layers, but at a glass fabric content > 3 layers the strain was almost constant. When glass fabric layers were at both outer surfaces, the hybrid laminate exhibited a slightly higher tensile strength and elastic modulus due to the small amount of glass yarn pull-out.

Evaluation of Texture Image and Preference to Men's Suit Fabrics according to Mechanical Properties, Hand and Fabric Information of Wool Blended Fabrics (모 혼방직물의 역학적 특성과 태 및 소재 정보에 따른 남성 정장용 소재의 질감이미지와 선호도 평가)

  • Kim, Hee Sook;Na, Mi Hee
    • Korean Journal of Human Ecology
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    • v.23 no.2
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    • pp.317-328
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    • 2014
  • In this study, differences of texture image and preference for men's suit fabrics according to mechanical properties, hand and fabric information were investigated. 55 subjects evaluated texture image and preference of 12 kinds of wool blended fabrics. For statistical analysis, t-test and pearson correlation coefficients were used. The results were as follows: Most of mechanical properties effected on texture images, and bending property and shearing property were effected on tactile preference and purchasing preference. For hand, objective hand values showed correlations with subjective texture images and preferences, but THV had almost no correlations. In sensory images according to presence of fabric information, fabrics were evaluated thinner, lighter, more pliable and smooth by cognition of wool blending ratio. For sensibility images, fabrics were evaluated more refined, intellectual, dignified and less practicable after recognize of wool blending ratio. In preferences, tactile preference was increased and purchasing preference was decreased after recognize fabric information. Therefore, significant differences of texture image and preference were observed according to presence of fabric information.

Changes of Physical Properties of Hanji Yarn Blended Fabrics after Fusing (한지사 혼용직물의 접착심 접착 후 역학적 물성 변화)

  • Jee, Ju-Won
    • Journal of the Korean Society of Clothing and Textiles
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    • v.44 no.1
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    • pp.159-174
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    • 2020
  • We selected 100% cotton fabric, 100% Hanji yarn fabric and two kinds of cotton / Hanji yarn blended fabrics and fused them with three kinds of interlinings in order to examine changes to the physical properties and the post-adhesion physical properties of Hanji yarn blended fabrics. Changes in KES values were examined after fusing. First, EM, B, 2HB, MMD values of Hanji yarn blended fabrics were higher than cotton fabric, and LT, RT, G, 2HG, LC, WC values of cotton fabric were higher than Hanji yarn blended fabrics. Tensile recovery was lowered, bending stiffness was increased, and shear stiffness was lowered when Hanji yarn was mixed. Second, the KES value of LT, B, 2HB, G, 2HG, LC, WC increased after fusing, while the EM, MMD values decreased. SMD was shown to decrease or increase depending on the type of fabric. The adhesive effect on bending stiffness and shear stiffness due to the mixing of Hanji shows a different tendency in the comparison of αB and αG.

Computation of Equivalent Material Properties of Woven Fabric Composites Using Homogenization Technique (균질화기법을 이용한 WFC의 등가물성치 산출)

  • 이진희;장지현;윤민우
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1997.10a
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    • pp.1-7
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    • 1997
  • Equivalent thermal conductivities and elasticity properties of woven fabric composites are computed using homogenization technique. The computational results show that the strength and thermal conductivity linearly increase with fiber volume fraction and that the variations of undulation of fibers has little effect on equivalent material properties. Homogenization technique is proved useful in the study of woven fabric composites and may find a lot more applications in the area.

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Mechanical Properties of VARTM Processed Abaca Fabric Composites (VARTM 공정으로 성형된 Abaca 패브릭 복합재의 기계적 특성평가)

  • Byun, Gill Jae;Ha, Jong-Rok;Kim, Byung-Sun;Joe, Chee Ryong;Ok, Ju Seon
    • Composites Research
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    • v.25 no.6
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    • pp.198-204
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    • 2012
  • The objective of this study is to improve the mechanical properties in abaca fabric/epoxy composites produced using a VARTM process. The mechanical properties were improved by increasing the surface roughness of the fabric through plasma polymerization and improving the interfacial adhesion between the epoxy and the fabric through changing its hydrophilic properties to the hydrophobic properties. Plasma polymerization at atmospheric pressure and room temperature was used, and the optimal polymerization time to improve the mechanical properties was investigated. NaOH treatment on the fabric was also carried out for the comparison. The composite fabricated using the fabric polymerized for 10 seconds shows the highest tensile strength compared to that of none-polymerized or NaOH treated. Plasma polymerization for more than 20 seconds exhibits decrease in the tensile strength. As a result, the plasma polymerization for more than 20 seconds may have caused some damages on the surface of the fabrics. Also, the hydrophilic abaca represents a tendency of presenting the hydrophobic properties in absorption and sedimentation tests.

Image Analysis of Luster Images of Woven Fabrics and Yarn Bundle Simulation in the Weave - Cotton, Silk, and Velvet Fabrics -

  • Kim, Jong-Jun
    • Journal of Fashion Business
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    • v.6 no.6
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    • pp.1-11
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    • 2002
  • The attractiveness of the textile fabrics are generally judged by visual or tactile evaluation methods. Since the surface of the textile materials are so diverse that the visual factors such as optical properties or luster of the fabrics are not easily measurable. While most of the cotton fabrics are not so much lustrous, calendering process could impart the cotton fabric better luster. Also, the general grade silk-like polyester fabrics resemble silk fabric with some limit in terms of luster properties. One of the interesting fabrics showing subdued luster is the velvet fabrics with dark shade. In this study, the luster related properties are examined using some image analysis methods. Yarn models based on the fabric weave types were developed to further investigate the effect of fabric crimp shapes due to weave on the optical properties or luster of the fabrics.