Mechanical properties of bifacial fabrics

Zhu, Licheng; Naebe, Maryam; Blanchonette, Ian; Wang, Xungai

doi:10.1177/0040517517700193

Cited by 8 publications

(6 citation statements)

References 17 publications

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“…Numerous studies have been performed using chemical and physical treatments, which can enhance some of these properties, but may impact adversely on other things, such as the fabric's rigidity and air permeability. Bifacial hybrid fabrics have thus been introduced recently, showing greater and faster moisture transfer properties (Zhu et al 2017a) with better heat transfer (Zhu et al 2017b), as well as an improved strength and abrasion resistance (Zhu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Screen-printing of microfibrillated cellulose for an improved moisture management, strength and abrasion resistant properties of flame-resistant fabrics

et al. 2021

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Low moisture absorbency of hydrophobically coated flame-resistant (FR) fabrics do not correlate well with the thermophysiological comfort. In this frame, we were the first to study the effect of screen-printed microfibrillated cellulose (MFC) on fabric’s breathability and moisture build-up and transfer as user-friendly and wear-related comfortable coating. The amount of MFC applied and its patterning was varied using different printing parameters, the density and thickness of FR fabric, and studied by add-on measurement and microscopic imaging. The effect of MFC coating and its durability (attachment) after a post-printing of hydrophobic polyacrylate on the same (layer-by-layer) or other side of the fabrics was considered, thus to maintain one side of the fabric (facing towards the wearer) hydrophilic while keeping the other side (facing outward) hydrophobic. The results showed that MFC provides uniform and repeatable printing, which gave homogeneous patterning with good layering on the fabrics, although, resulting in the MFC concentration, squeegee’ pressure, and fabric’ structure dependent add-on, its imprinting and co-crosslinking within the polyacrylate. This slightly reduced the fabric air-permeability, but increased it surfaces wetting, moisture uptake kinetic and capacity (hydroscopicity), without affecting the water vapour transfer. Besides, the polyacrylate could fix the MFC pre-printed on the other side of the fabric, thus maintaining its hydrophilicity, being more pronounced in the case of less open and thicker fabric, while improving its tensile/tear strengths and abrasion resistance, without deterioration of the fabric`s flammability.

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Section: Introductionmentioning

confidence: 99%

Screen-printing of microfibrillated cellulose for an improved moisture management, strength and abrasion resistant properties of flame-resistant fabrics

et al. 2021

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“…Our group has reported on the design and manufacturing of bifacial fabrics for apparel uses. 26,27 Bifacial fabrics show a unique appearance, with a knitted structure on one face and a woven structure on the other, as shown in Figure 1. We have also reported that porosity plays a key role in heat and moisture transfer properties of woven, knitted, and bifacial fabrics.…”

mentioning

confidence: 99%

Determination of the porosity in a bifacial fabric using micro-computed tomography and three-dimensional reconstruction

Zhu

Wang

Hinestroza

et al. 2017

Textile Research Journal

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Fabric porosity affects the performance of textile materials, and characterization of the pore size in fabrics is a particularly difficult task. In this study, micro-computed tomography and reconstructed three dimensional (3D) images were used to accurately measure the fabric porosity and to determine the number, diameters, and locations of the pores. To validate the flexibility of the proposed technique, we analyzed woven, knitted, and bifacial fabrics made of wool/acrylic and polyester. Distributions of pore diameters and pore connections in the bifacial fabric confirmed that this fabric comprises a combination of woven and knitted structures. The volume porosities of the woven, knitted, and bifacial fabrics obtained from 3D reconstruction were similar to those calculated based on other techniques such as mathematical models. While the different fabric structures used in this study showed similar volume porosities, they had different air permeability. However, porosity analysis suggested new evidence to validate permeability measurements in fabrics. A new method for determining fabric surface and measuring fabric thickness is proposed, which accesses the number and diameters of inter-fiber pores. Having access to this type of information can potentially be used to engineer and to tune the performance of textiles.

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“…More detailed descriptions of the machine can be found in Zhu et al's work. [34][35][36] Experimental setup Yarn pull-out test Yarn pull-out tests were performed to verify the increase in yarn gripping in structured modified fabrics. The setup is schematically illustrated in Figure 4.…”

Section: Fabric Designmentioning

confidence: 99%

An experimental investigation of the yarn pull-out behavior of plain weave with leno and knitted insertions

Zhou

Ali

Gong

et al. 2019

Textile Research Journal

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Yarn–yarn sliding force plays a vital role in absorbing impact energy for plain fabrics. This paper reports the methods and results of an investigation on the mechanisms that enable higher yarn pull-out force of woven fabrics with the incorporation of lenos and knits. The experimental results suggested that the insertion of leno lines on plain weave gives an approximately 20% increase in junction rupture force over the original plain construction. With knitted structures inserted, the structure-modified fabrics showed a junction rupture force up to about 15 times higher than simple plain weave. It was even found that the yarns failed rather than pulled out in multiple yarn pull-out tests. This is because knitted structures tend to become self-locked and consequently restrict yarn displacement when subjected to external loading. This investigation reports a method to increase the frictional force between the warp and weft yarns based on textile technologies. It is expected that the results obtained could provide some useful information for the engineering design of flexible ballistic protection systems.

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Mechanical properties of bifacial fabrics

Cited by 8 publications

References 17 publications

Screen-printing of microfibrillated cellulose for an improved moisture management, strength and abrasion resistant properties of flame-resistant fabrics

Screen-printing of microfibrillated cellulose for an improved moisture management, strength and abrasion resistant properties of flame-resistant fabrics

Determination of the porosity in a bifacial fabric using micro-computed tomography and three-dimensional reconstruction

An experimental investigation of the yarn pull-out behavior of plain weave with leno and knitted insertions

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