The effect of the nano-structured aerogel powder on the structural parameters, water repellency, and water vapor/air permeability of a fibrous polyester material

2016 ◽  
Vol 177 ◽  
pp. 99-111 ◽  
Author(s):  
Zahra Mazrouei-Sebdani ◽  
Akbar Khoddami ◽  
Hassan Hadadzadeh ◽  
Mohammad Zarrebini ◽  
Ali Karimi ◽  
...  
Keyword(s):  
Water Vapor ◽  
Structural Parameters ◽  
Water Repellency ◽  
Air Permeability ◽  
Polyester Material

scholarly journals Thermal and breathability management of microencapsulated phase change material (MPCM) incorporated jute fabric

2021 ◽  
Vol 16 ◽  
pp. 155892502110295
Author(s):  
Abdus Shahid ◽  
Solaiman Miah ◽  
Abdur Rahim
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Fluctuation ◽  
Water Repellency ◽  
Air Permeability ◽  
Jute Fabric ◽  
Moisture Management ◽  
Microencapsulated Phase Change Material ◽  
Fabric Surface ◽  
Change Material

Jute bags are widely used to carry food grains and other materials that may be prone to quality deterioration due to thermal fluctuation. Thermal and moisture properties play a significant role in the packaging materials in the form of a container. This study deals with the effect of microencapsulated phase change material (MPCM) with hydrophobic binder on thermal and moisture management properties of jute fabric. Jute fabric was treated with MPCM by pad-dry-cure method. The treated sample was characterized by thermogravimetric analysis (TGA), differential scanning colorimeter (DSC), scanning electron microscope (SEM), moisture management tester (MMT), and air permeability tester. The results revealed that MPCM treated jute fabric shows greater thermal stability and heat absorption ability of 10.58 J/g while changing from solid to liquid phase. The SEM image ensures even distribution of MPCMs on fabric surface and surface roughness was also observed using image processing software. The air permeability was found to decrease whereas the water repellency enhanced in the developed sample.

scholarly journals Characteristics of Knitted Structures Produced by Engineered Polyester Yarns and Their Blends in Terms of Thermal Comfort

2015 ◽  
Vol 10 (1) ◽  
pp. 155892501501000 ◽  
Author(s):  
Nida Oğlakcioğlu ◽  
Ahmet Çay ◽  
Arzu Marmarali ◽  
Emel Mert
Keyword(s):  
Water Vapor ◽  
Thermal Comfort ◽  
Moisture Transfer ◽  
Water Vapor Permeability ◽  
Air Permeability ◽  
Vapor Permeability ◽  
Moisture Management ◽  
Thermal Comfort Properties ◽  
Knitted Structure ◽  
Drying Properties

Engineered yarns are used to provide better clothing comfort for summer garments because of their high levels of moisture and water vapor management. The aim of this study was to investigate the characteristics of knitted structures that were produced using different types of polyester yarns in order to achieve better thermal comfort properties for summer clothing. However they are relatively expensive. Therefore, in this study engineered polyester yarns were combined with cotton and lyocell yarns by plying. This way, the pronounced characteristics of these yarns were added to the knitted structure as well. Channeled polyester, hollow polyester, channeled/hollow blended polyester, cotton, and lyocell yarns were plied with each other and themselves. Then, single jersey structures were knitted using these ply yarn combinations and air permeability, thermal resistance, thermal absorptivity, water vapor permeability, moisture management, and drying properties were tested. The results indicate that channeled PES fabrics are advantageous for hot climates and high physical activities with regards to high permeability and moisture transfer and also to fast drying properties. Besides, air permeability and thermal properties improved through the combination of lyocell yarn with engineered polyester yarns. However, the use of lyocell or cotton with engineered yarns resulted in a to a decrease in moisture management properties and an increase in drying times

Preparation of Cross-Linked Cellulase Aggregate and Application to Cool Finishing of Cotton Fabric

2021 ◽  
Vol 8 (3) ◽  
pp. 1-7
Author(s):  
Gang Bai ◽  
Bingbing Feng ◽  
Yanchun Liu ◽  
Shujiao Dai
Keyword(s):  
Water Vapor ◽  
Cotton Fabric ◽  
Silicone Oil ◽  
Air Permeability ◽  
Kinetic Friction ◽  
Capillary Effect ◽  
Bending Rigidity ◽  
Moisture Permeability ◽  
Treated Sample ◽  
The Stability

Cellulase was immobilized by cross-linked enzyme aggregation to improve the stability of cellulase. The prepared cross-linked cellulase aggregates (CLCAs) and ice silicone oil were used for the cool finishing of cotton fabric. The results showed that the CLCAs extended the cellulase stability compared to free cellulase. The surface softness, smoothness, moisture permeability, and air permeability of the cotton fabric increased after CLCAs and ice silicone oil treatment. Shearing rigidity of the treated sample was 0.44 cN/(cm·deg), bending rigidity was 0.0069 cN cm, and the drape coefficient was 29.3%. Coefficient of kinetic friction of the treated sample was 0.186. The capillary effect of the treated fabric was 12.1 cm/(30 min). Air permeability was 354.3 L/(m2·s). Moisture penetrability was 3.912 g/(m2·d). The thermal and water-vapor resistance were 0.0194 m2·°C/W and 4.691 Pa·m2/W, respectively.

scholarly journals Study on Waterproof and Air Permeability of Inorganic Insulated Decorative Panel

2018 ◽  
Vol 175 ◽  
pp. 01001
Author(s):  
Hu Xiang-lei ◽  
Wang Hong-jun ◽  
Gao Ying
Keyword(s):  
Water Vapor ◽  
Weak Link ◽  
Protective Layer ◽  
Outer Wall ◽  
High Water ◽  
Air Permeability ◽  
Composite Panel ◽  
Vapor Flux ◽  
System Supplier ◽  
Complete Set

According to the climatic characteristics, the paper investigates relation between waterproof and air permeability of inorganic insulated decorative panel. The paper believes there are two main problems in the waterproof of inorganic insulated decorative panel, one is the gap is a weak link for waterproof as some weather proofing silicone sealants have poor elastic modulus, the other is the failure of construction details causes partial waterproofing failure. The composite panel system is best supplied in a complete set by the system supplier, which is a main comprehensive solution to the waterproofing problem of the composite panel. Through analyzing software simulation and experimental construction, the paper puts forward suggestion that hot summer and cold winter areas should take practical technical measures, including the use of the protective layer with high water vapor flux density or the installation of exhaust plugs in the outer wall base, or setting water vapor escaping channel such as PVC exhaust plug in the glue seam, in the actual project.

scholarly journals Investigation of the comfort properties of traditional woven fabrics with different structural parameters

2020 ◽  
Vol 71 (04) ◽  
pp. 302-308
Author(s):  
MINE AKGUN ◽  
GIZEM KARAKAN GUNAYDIN ◽  
AYÇA GÜRARDA ◽  
ERHAN KENAN ÇEVEN
Keyword(s):  
Thermal Resistance ◽  
Water Vapour ◽  
Structural Parameters ◽  
Air Permeability ◽  
Woven Fabrics ◽  
Water Vapour Permeability ◽  
Test Results ◽  
Vapour Permeability ◽  
Thermal Absorptivity

Turkish traditional Buldan weavings are known as special fabrics in terms of providing comfortable clothes which are known to be natural and healthy in Denizli, Turkey. The research presented in this paper assesses the effects of different fabric structural parameters of Buldan fabrics on comfort properties such as thermal resistance, thermal absorptivity, water vapour permeability and air permeability. Five different Buldan fabrics woven with different fabric structural parameters were produced. According to test results, cotton/Tencel Buldan fabrics indicated similar comfort properties with the 100% cotton Buldan fabric properties. Additionally, the lowest thermal absorptivity was observed from 100% cotton Buldan fabrics which give the warmth feeling among the evaluated samples.

scholarly journals Comparative Analysis of Knits from Peat Fibre and its Combinations with Other Natural Fibres

2017 ◽  
Vol 25 (0) ◽  
pp. 24-29
Author(s):  
Daiva Mikučioniené ◽  
Lina Čepukonė
Keyword(s):  
Comparative Analysis ◽  
Physical Properties ◽  
Water Adsorption ◽  
Structural Parameters ◽  
Air Permeability ◽  
Raw Material ◽  
Loop Length ◽  
Knitted Fabrics ◽  
Natural Origin ◽  
Mechanical And Physical Properties

Natural and man-made fibres of natural origin are more and more widely used, while consideration of sustainability is constantly increasing. The properties and processing behaviour of newly introduced fibres of natural origin are usually compared and often predicted on the basis of widely investigated fibres; however, this prediction sometimes does not have any confirmed basis. Structural parameters and the majority of mechanical and physical properties of knitted fabrics depend on technical characteristics of the knitting machine, on the properties of yarns as well as on the origin of the raw material. This study attempts to develop knits from new natural peat fibres and their combination with widely used woollen, cotton and elastomeric Lycra yarns and to investigate the influence of peat fibre’s nature on structural parameters such as loop length, wale and course spacing, area density, the tightness factor and on main physical properties such as dimensional stability, air permeability and water adsorption.

Sign in / Sign up

Export Citation Format

Share Document