Thermal and Mechanical Properties of Sol-Gel Silica Coated Fabrics

Tav, Abdullah; Öz, Yahya; Akyildiz, Halil I.

doi:10.31590/ejosat.1000774

Cited by 4 publications

(6 citation statements)

References 37 publications

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“…The weight loss in pure cotton occurred in a single step, whereas the degradation of the cellulose starts at 290 °C and ends at around 390 °C with a peak temperature of 364 °C. Similar observations were reported in a previous work [33]. The sample coated with the polymers and polyurethane-based thickener and with the carbonbased paste has shown a slightly higher weight loss, occurring in two stages.…”

Section: Thermogravimetric Analysissupporting

confidence: 90%

Joule-Heating Effect of Thin Films with Carbon-Based Nanomaterials

et al. 2022

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Smart textiles have become a promising area of research for heating applications. Coatings with nanomaterials allow the introduction of different functionalities, enabling doped textiles to be used in sensing and heating applications. These coatings were made on a piece of woven cotton fabric through screen printing, with a different number of layers. To prepare the paste, nanomaterials such as graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (CNTs) were added to a polyurethane-based polymeric resin, in various concentrations. The electrical conductivity of the obtained samples was measured and the heat-dissipating capabilities assessed. The results showed that coatings have induced electrical conductivity and heating capabilities. The highest electrical conductivity of (9.39 ± 1.28 × 10−1 S/m) and (9.02 ± 6.62 × 10−2 S/m) was observed for 12% (w/v) GNPs and 5% (w/v) (CNTs + GNPs), respectively. The sample with 5% (w/v) (CNTs + GNPs) and 12% (w/v) GNPs exhibited a Joule effect when a voltage of 12 V was applied for 5 min, and a maximum temperature of 42.7 °C and 40.4 °C were achieved, respectively. It can be concluded that higher concentrations of GNPs can be replaced by adding CNTs, still achieving nearly the same performance. These coated textiles can potentially find applications in the area of heating, sensing, and biomedical applications.

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Section: Thermogravimetric Analysissupporting

confidence: 90%

Joule-Heating Effect of Thin Films with Carbon-Based Nanomaterials

et al. 2022

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“…In contrast, when the 3D WKSF was coated by (SA þ PVA) sol, the fibers were bound to each other and the fabric was homogenously coated (fiber to fiber bonding by PVA), resulting in more smooth and more adequate adhesion as compared to SA coating. 13 After coating with (SA þ PVA), the morphology of all coated 3D WKSFs was inflated by the surface of the substrate. Additionally, SA and S1.…”

Section: Resultsmentioning

confidence: 99%

“…39 On the other hand, three steps were used to prepare a 5 wt.% PVA solution in clean water. 13 Before stirring, the preferred amount of PVA was allowed to soak and swell in the water. A simpler suspension procedure was made available without affecting the polymer chains.…”

Section: Silica Sol Aerogels and Pva Solution Preparationmentioning

confidence: 99%

“…A pliable material is produced by the development of an inorganic colloidal solution (sol) and the gelatinization of the sol into a permanent fluid phase (gel). 13 The sol-gel technology offers crucial benefits like lower processing temperature, higher level of pureness, and a broad range of initiating monomers providing a potential path to a variety of material compositions, in addition to cost savings and simple fabrication. 14 Recently, the literature includes studies that have extensively investigated the silica sol-gel responses.…”

mentioning

confidence: 99%

“…35 Moreover, Tav et al used PVA/ silica to improve and study the thermal and mechanical properties of polyester (PET), polyamide 6.6 (PA 6.6), and cotton fabrics. 13 Thus, PVA can be a better choice to incorporate silica components into textile materials (i.e. three-dimensional (3D) weft-knitted spacer fabrics (WKSFs)) to increase mechanical properties since it is water soluble and can react with silica compounds.…”

mentioning

confidence: 99%

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Study on thermal, mechanical, and wettability properties of three-dimensional weft-knitted spacer fabrics with various silica aerogels coating

Islam

Wang

Pan

et al. 2023

Textile Research Journal

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This study investigated the thermal, mechanical, and oil absorption-retention properties at various temperatures (20°C, 30°C, 40°C, 50°C, and 60°C) of three-dimensional (3D) weft-knitted spacer fabrics with optimal performance of silica aerogel coating that demands exceptional attention. Silica aerogels and (silica aerogels + poly(vinyl-alcohol)) sols were prepared and coated on 3D weft-knitted spacer fabrics to study and compare the basic properties, i.e. thermal resistance, thermal conductivity, tensile strength, initial modulus, compression, bending rigidity, wettability, oil absorption, and retention capacity. The scanning electron microscopy and Fourier transform infrared spectroscopy studies were completed to understand the influence of both coatings on 3D weft-knitted spacer fabrics such as surface morphology and molecular interaction. The tensile, bending, and compression tests of 3D weft-knitted spacer fabrics were accomplished to check their durability, bendability, and compressibility. All the coated samples (both silica aerogels and (silica aerogels + poly(vinyl-alcohol))) showed greater thermal resistance (0.0971 ± 0.0003 m2 KW−1 and 0.0912 ± 0.0005 m2−1KW−1) and the lower thermal conductivity would be (0.0309 ± 0.0001 Wm−1 K−1 and 0.0329 ± 0.0002 Wm−1 K−1) instead of (0.0329 ± 0.0002 Wm−1 K−1 and 0.0329 ± 0.0002 Wm−1 K−1) with better thermal stability than the uncoated samples, most specifically coated sample 5. Besides, coated sample 5 exposed higher oil absorption ((7.91 ± 0.06 g/g and 7.88 ± 0.06 g/g) and (7.56 ± 0.04 g/g and 7.53 ± 0.04 g/g)) and retention ((90.10 ± 0.53% and 89.07 ± 0.55%) and (92.47 ± 0.49% and 91.43 ± 0.47%)) capacity for vegetable and engine oil in all conditions, especially at 40°C. The outcomes demonstrated that both coatings played a vital role in the thermal, mechanical, and wettability properties of 3D weft-knitted spacer fabrics with statistically significant performance ( p < 0.05). Moreover, these new types of sorbents (3D weft-knitted spacer fabrics) have better consequences in most cases than conventional knitted, woven, and nonwoven sorbents. Hence, these 3D weft-knitted spacer fabrics could be used for industrial applications as eco-friendly and multifunctional oil sorbent materials.

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Examination of the metallization behaviour of an ABS surface

Ünlü,

Öz,

Erdoğan

et al. 2023

Surface Engineering

Self Cite

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The main scope of this work is the metallization of high density Acryonitrile Butadiene Styrene (ABS) surfaces for aerospace applications. Originality and main focused area of the study is to grasp the mechanism of physical properties of the surface and the effect of wet chemical processes on the surface of the ABS substrate. After surface sensitization and metallization with nano-sized ions, the polyurethane surface is metallized and nickel (Ni) coated with electroless and elecrolytic Ni plating processes. The ultimate goal of these advances is the production of composite lay-up tools for the production of primary and secondary composite aircraft parts from nanoscale to macro level. Composite lay-up tool requirements of the aerospace industry include a minimum thickness of 5 mm, acceptability of airtightness testing and reduced surface roughness. Results show that increasing current density adversely affects the surface morphology and metallization processes enhance the surface conductivity of the foam.

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Thermal and Mechanical Properties of Sol-Gel Silica Coated Fabrics

Cited by 4 publications

References 37 publications

Joule-Heating Effect of Thin Films with Carbon-Based Nanomaterials

Joule-Heating Effect of Thin Films with Carbon-Based Nanomaterials

Study on thermal, mechanical, and wettability properties of three-dimensional weft-knitted spacer fabrics with various silica aerogels coating

Examination of the metallization behaviour of an ABS surface

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