The Experts below are selected from a list of 7941 Experts worldwide ranked by ideXlab platform

Robert A. Shanks - One of the best experts on this subject based on the ideXlab platform.

  • Silica aerogel-integrated nonwoven protective fabrics for chemical and thermal protection and thermophysiological wear Comfort
    Journal of Materials Science, 2020
    Co-Authors: Mohiuddin Ahmed Bhuiyan, Abu Shaid, Israt Jahan, Lijing Wang, Robert A. Shanks
    Abstract:

    This research has designed and prepared a protective Clothing layer by integrating porous silica aerogel with nonwoven fabrics for simultaneous chemical and thermal protection. Protective interlining having resistance to heat and liquid chemical penetration was developed by sandwiching randomly distributed aerogel particles between viscose nonwoven fabric layers. The nonwoven layer and aerogel particle layer were explored by analysing fabric surface morphology. Physical characterization of the test specimens revealed that the weight and thickness of fabric increased after the integration of aerogel particles. Consequently, improved chemical resistance and thermal resistance were observed in the aerogel–nonwoven fabrics with higher aerogel concentration. For Clothing Comfort, the high air permeability indicated sufficient breathability by transferring air and water vapour from the body to the atmosphere and vice versa through apparel. Improved evaporative transmittance and cooling index of aerogel–fabrics suggested that the fabric will create a favourable thermal Comfort microenvironment between the skin and apparel. For wear Comfort regarding wet clinginess, the high water uptake and evaporation rate of the fabric specimens indicated their ability to retain and evaporate large amounts of perspiration vapour in a hot and humid atmosphere. The overall performance of the aerogel–nonwoven fabrics suggested that the integration of silica aerogel with viscose nonwoven fabric is a prospective approach for developing protective interlining that will provide reliable chemical and thermal protection as well as adequate Clothing Comfort to the wearer.

K. Parsons - One of the best experts on this subject based on the ideXlab platform.

  • personal factors in thermal Comfort assessment Clothing properties and metabolic heat production
    Energy and Buildings, 2002
    Co-Authors: George Havenith, Ingvar Holmér, K. Parsons
    Abstract:

    In the assessment of thermal Comfort in buildings, the use of the Predicted Mean Vote (PMV) model is very popular. For this model, data on the climate, on Clothing and on metabolic heat production are required. This paper discusses the representation and measurement of Clothing parameters and metabolic rate in the PMV context. Several problems are identified and for some of these solutions are provided. For Clothing insulation it was shown that effects of body motion and air movement are so big that they must be accounted for in Comfort prediction models to be physically accurate. However, effects on dry heat exchange are small for stationary, light work at low air movement. Also algorithms for convective heat exchange in prediction models should be reconsidered. For evaporative heat resistance of the Clothing worn, which is currently not an input factor in the PMV model, it was shown that in cases where special Clothing with high vapour resistance is worn (e.g. clean-room Clothing), Comfort may be limited by the Clothing as it will induce a high skin wettedness. Thus, for such cases Clothing vapour resistance should not be neglected in the calculation of Comfort using the PMV model, or the induced skin wettedness should be calculated separately. The effects on thermal Comfort of reductions in vapour resistance due to air and body movements are also shown to have a substantial impact on the Comfort limits in terms of skin wettedness and cannot be neglected either. For metabolic heat production it was concluded that for precise Comfort assessment a precise measure of metabolic rate is needed. In order to improve metabolic rate estimation based on ISO 8996, more data and detail is needed for activities with a metabolic rate below 2 MET. Finally, it was shown that the methods for determining metabolic rate provided in ISO 8996 (typically used in Comfort assessment and evaluations) do not provide sufficient accuracy to allow determination of Comfort (expressed as PMV) in sufficient precision to classify buildings to within 0.3 PMV units as proposed in the upcoming revision of ISO 7730.

Mohiuddin Ahmed Bhuiyan - One of the best experts on this subject based on the ideXlab platform.

  • Silica aerogel-integrated nonwoven protective fabrics for chemical and thermal protection and thermophysiological wear Comfort
    Journal of Materials Science, 2020
    Co-Authors: Mohiuddin Ahmed Bhuiyan, Abu Shaid, Israt Jahan, Lijing Wang, Robert A. Shanks
    Abstract:

    This research has designed and prepared a protective Clothing layer by integrating porous silica aerogel with nonwoven fabrics for simultaneous chemical and thermal protection. Protective interlining having resistance to heat and liquid chemical penetration was developed by sandwiching randomly distributed aerogel particles between viscose nonwoven fabric layers. The nonwoven layer and aerogel particle layer were explored by analysing fabric surface morphology. Physical characterization of the test specimens revealed that the weight and thickness of fabric increased after the integration of aerogel particles. Consequently, improved chemical resistance and thermal resistance were observed in the aerogel–nonwoven fabrics with higher aerogel concentration. For Clothing Comfort, the high air permeability indicated sufficient breathability by transferring air and water vapour from the body to the atmosphere and vice versa through apparel. Improved evaporative transmittance and cooling index of aerogel–fabrics suggested that the fabric will create a favourable thermal Comfort microenvironment between the skin and apparel. For wear Comfort regarding wet clinginess, the high water uptake and evaporation rate of the fabric specimens indicated their ability to retain and evaporate large amounts of perspiration vapour in a hot and humid atmosphere. The overall performance of the aerogel–nonwoven fabrics suggested that the integration of silica aerogel with viscose nonwoven fabric is a prospective approach for developing protective interlining that will provide reliable chemical and thermal protection as well as adequate Clothing Comfort to the wearer.

G Nalankilli - One of the best experts on this subject based on the ideXlab platform.

Marmarali A. - One of the best experts on this subject based on the ideXlab platform.

  • Evaluating the effect of spinning systems on thermal Comfort properties of modal fabrics
    'IOP Publishing', 2017
    Co-Authors: Aydin I. Secil, Kertmen M., Marmarali A.
    Abstract:

    17th World Textile Conference of the Association-of-Universities-for-Textiles (AUTEX) - Shaping the Future of Textiles -- MAY 29-31, 2017 -- GREECEWOS: 000417214900226In recent years the importance of Clothing Comfort became one of the most important feature of the fabrics. The aim of this study is to characterize thermal Comfort properties of single jersey fabrics were knitted using 100% modal yarns which were spun in various types of yarn spinning methods such as ring spinning, compact spinning, rotor spinning and airjet spinning. Thermal Comfort properties like air permeability, thermal resistance, thermal absorptivity and water vapour permeability of fabrics were tested. The results indicate that compact spinning technology will be appropriate for the summer climate casual wear.Assoc Univ Textile

  • A novel medical bandage with enhanced Clothing Comfort
    'IOP Publishing', 2016
    Co-Authors: Oglakcioglu N., Sari B., Ute T. Bedez, Marmarali A.
    Abstract:

    48th International Congress of the International-Federation-of-Knitting-Technologists (IFKT) -- JUN 08-11, 2016 -- Moenchengladbach, GERMANYWOS: 000392727400021Compression garments are special textile products which apply a pressure on needed body zones for supporting medical, sport or casual activities. Medical bandages are a group of these garments and they have a very common usage for compression effect on legs or arms. These bandages are generally produced by using synthetic raw materials such as polyamide or polyester fibres. Medical bandages are in contact with skin. Even if the synthetic fibres are used, they may cause both Comfort and health problems like allergies. Nowadays in textile sector, the expectations of clients include using of natural fibres as far as possible in all garments. Natural fibres have good advantages such as breathability, softness, moisture management ability, non-allergenic and ecologic structure and these characteristics present optimum utilization conditions. In this study, tubular medical bandages were manufactured by using core spun yarns (sheath fibres are selected as tencel, bamboo and cotton, core material is elastane) and their pressure and Comfort (air and water vapour permeability) characteristics were investigated. The results indicated that the bandages have good Comfort abilities beside adequate pressure values for compression effect. These garments can constitute a new production field for medical bandages with their Comfort properties in addition to pressure characteristics.Int Federat Knitting Technologist