scholarly journals High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Pham Thi Thu Trang ◽  
Le Ha Giang ◽  
Nguyen Ba Manh ◽  
Trinh Duc Cong ◽  
Ngo Trinh Tung ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Titanium Chloride ◽  
Coating Materials ◽  
Sem Image ◽  
Coated Fabric ◽  
Tio2 Sol ◽  
Coating Method ◽  
Coated Fabrics ◽  
Fabric Surface

SiO2 and TiO2 sols were successfully synthesized by using sodium silicate and titanium chloride as Si and Ti sources. SiO2-TiO2 sol coated polyester/cotton fabric was fabricated by deep-coating method and using SiO2, TiO2 sols as coating materials. SiO2-TiO2 coated fabric were characterized by XRD, FTIR, TGA, SEM and EDX. From SEM image, it showed the SiO2, TiO2 particles of 20-30 nm which well deposited on fabric surface. TGA result revealed the significant improvement of thermal resistance and stability of SiO2-TiO2 coated fabric as compared to those of uncoated fabric. Flame retardant performance of SiO2-TiO2 coated fabrics was much better than that of uncoated fabric. Thus, SiO2-TiO2 coated fabric SiO2-TiO2 content of 26wt% showed the UL-94 classification of V-0 and LOI value of 30.3 were obtained. Moreover, mechanical property (tear strength) of SiO2-TiO2 coated fabrics were also improved.

Nanocrystalline TiO2 Coated-Fabric for UV Shielding and Anti-Bacterial Functions

2008 ◽  
Vol 569 ◽  
pp. 21-24 ◽  
Author(s):  
O. Nimittrakoolchai ◽  
Sitthisuntorn Supothina
Keyword(s):  
Optical Properties ◽  
Food Packaging ◽  
Tio2 Layer ◽  
Uv Shielding ◽  
Coated Fabric ◽  
Before And After ◽  
Qualitative Test ◽  
Coated Fabrics ◽  
Fabric Surface ◽  
Commercial Tio2

Due to excellent photocatalytic and optical properties of titanium dioxide (TiO2), it has been applied in several products such as food packaging plastics, materials for vehicles or for buildings and sunscreen-protecting cosmetics. In this present work, the synthesized as well as commercial TiO2 was coated onto a household curtain fabric for anti-microbial and ultraviolet (UV) shielding functions. The coating was performed by inducing the deposition of TiO2 layer from the Ti precursor onto the fabric surface pre-treated with silane adhesive agent so as to improve the adhesion. Ag nanoparticles were also incorporated in some samples to further improve the antibacterial function. Anti-bacterial activities of the coated fabric were evaluated by standard qualitative test (the Kirby-Bauer test (AATCC 147)). Efficiency for UV shielding was evaluated by measuring a UV-Vis reflection of the coated fabrics both before and after subjecting to several washing cycles. The result showed that the TiO2-coated fabrics developed had potential as antibacterial and UV shielding for the curtain industry.

scholarly journals Effect of fixation conditions on yellowing behavior of cellulose powder–coated fabrics

2019 ◽  
Vol 14 ◽  
pp. 155892501982904
Author(s):  
Gizem Manasoglu ◽  
Mehmet Kanik ◽  
Kenan Yildirim
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Curing Temperature ◽  
Cellulose Powder ◽  
Spectroscopy Analysis ◽  
Surface Change ◽  
Coated Fabric ◽  
Powder Samples ◽  
Coated Fabrics ◽  
Fabric Surface

In this study, the yellowing behavior of cellulose powders, which is applied to pretreated polyester woven fabrics with concentrations of 100 g/kg by knife coating technique, was investigated. After drying process, coated fabrics were cured at different conditions to determine the effects of the curing temperature and time on yellowing behaviors. The yellowness–whiteness of coated fabrics was measured with a spectrophotometer according to ASTM E313. As the curing temperature and time increase, yellowing effect was more observable. However, the effect of temperature increase is found to be more significant than the increase in curing duration in terms of more observed yellowness. In order to investigate the reason of yellowing, cellulose powder samples were heated in drying oven at three different heating temperatures (130°C, 150°C, and 170°C) for three different heating periods (3, 5, and 7 min). Then, thermal gravimetric analysis and Fourier transform infrared spectroscopy analysis of powder samples were performed for each temperature–period combinations. No ring-opening reaction on the cellulose group was found in the Fourier transform infrared spectroscopy analysis. However, the changes in the spectra can be attributed to the chain breakage in the cellulose macromolecules as well as water loss from the molecular structure during the heating process. Microscopic and scanning electron microscopic analysis was carried out to see any surface change on the fiber and coated fabric. There was no detectable surface change on the fiber and coated fabric surface, apart from a color change on the fabric surface.

Study of the effect of thermal conductivity on the anti-icing performance of coated fabrics

2020 ◽  
Vol 90 (17-18) ◽  
pp. 2035-2045
Author(s):  
Lun Han ◽  
Xiaoming Zhao ◽  
Yuhong Shen
Keyword(s):  
Thermal Conductivity ◽  
Melting Process ◽  
Graphite Powder ◽  
Melting Rate ◽  
Angle Measuring ◽  
Coated Fabric ◽  
Thermal Constants ◽  
Coating Method ◽  
Coated Fabrics ◽  
Oil Repellent

The anti-icing property of materials can be influenced by many factors, such as mechanical forces, electrostatic forces, van der Waals interaction and so on. In this research, the effect of thermal conductivity on the anti-icing performance of coated fabrics was studied. An instrument to observe the melting process of the ice on various materials was designed, by which the melting rate of the ice on the samples could be tested. A formula for the variation of the melting rate of the ice on the samples against the thermal conductivity of the samples was deduced using a mathematical method. It was proved that the formula can be used to study the effect of thermal conductivity on the anti-icing performance of coated fabrics. A coated fabric with anti-icing performance was prepared with Nomex IIIA fabrics, PU-2540 (Polyurethane-2540), Teflon emulsion, graphite powder, SiC powder and TG-581 (fluorine-containing water and oil repellent-581) using a knife coating method. The properties of the samples were investigated by using a video optical contact angle measuring instrument (OCA15 Pro), a thermal constants analyzer (TPS2500S, Hot Disk, Sweden), an anti-icing property tester, and other devices. Results show that the coated fabrics prepared in this manner have good performance in ease of ice removal and a low interaction with water and ice, resulting in good anti-icing properties.

scholarly journals FLAME RETARDANCY IMPROVEMENT OF MODIFIED COTTON FABRIC BY NANO SILICA SOL COATING

2020 ◽  
Vol 58 (4) ◽  
pp. 473
Author(s):  
Vu Anh Tuan ◽  
Pham Thi Thu Trang ◽  
Giang H. Ha Le ◽  
Manh B Nguyen ◽  
Tran Quang Vinh ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Flame Retardancy ◽  
Dip Coating ◽  
Silica Sol ◽  
Nano Silica ◽  
Tear Strength ◽  
Coating Method ◽  
Coated Fabrics ◽  
Dip Coating Method ◽  
Fabric Surface

Cotton fabric was coated by silica sol at different times using dip-coating method. Nano silica coated fabrics were characterized by XRD, FTIR, SEM, EDX, TGA. From SEM result, it showed that fabric surface was coated by nanosilica particles of 20-30 nm size. Nano silica coated fabrics showed the improvement not only flame retardancy (LOI increased from 18.4 to 30.8) but also the tear strength. Tear strength increased from 23 N/mm (cotton fabric) to 29.9 N/mm (fabric coated nanosilica at 3 times).

Preparation and Properties of Knitted Coated Fabric with Flame Retardancy

2010 ◽  
Vol 156-157 ◽  
pp. 1313-1317
Author(s):  
Jian Feng Di ◽  
Jie Xu ◽  
Wen Qin Du
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Orthogonal Experiment ◽  
Woven Fabric ◽  
Knitted Fabric ◽  
Coating Process ◽  
Coated Fabric ◽  
Washing Durability ◽  
Variable Function ◽  
Coated Fabrics

Due to its excellent performance, special style and variable function, coated fabric is used more and more widely by the public. At present, there are lots of coated fabrics, most of which are made from woven fabric, knits are rarely used. The reason is knitted fabric has good elasticity and large deformation. Therefore, it is difficult to control the tension in the direct coating process. In this paper, the transfer coating process is adopted to solve this problem. First of all, knitted fabric was finished by padding flame retardant, then coated with polyurethane(PU) which includes flame retardant. The optimum transfer coating process is obtained by orthogonal experiment. Knitted coated fabrics with flame retardancy are manufactured by the optimum coating process. Washing durability of coated fabric was tested through the washing test. The results showed that the coated fabric has good flame retardancy and the washing durability.

Effect of Construction on Mechanical Behavior of Fabric Reinforced Rubber

2006 ◽  
Vol 79 (2) ◽  
pp. 199-216 ◽  
Author(s):  
S. Farboodmanesh ◽  
J. Chen ◽  
J. Mead ◽  
K. White
Keyword(s):  
Mechanical Response ◽  
Dip Coating ◽  
Coating Materials ◽  
Warp Yarn ◽  
Competitive Edge ◽  
Coated Fabric ◽  
Rubber Coating ◽  
Coated Fabrics ◽  
Weave Pattern ◽  
Selection Of

Abstract Fabrics coated with rubber have wide applications in fields such as medical substrates, protective clothing, and flexible membranes for civil structures, airbags, geotextiles and industrial fabrics. As the market for coated fabrics expands to applications with more complex geometries and loading conditions, a competitive edge can be gained by optimizing the selection of fabric substrate and coating materials. This work includes a detailed experimental study of the effect of various parameters such as weave pattern, yarn size, and coating thickness on rubber coated fabric mechanical response. Nine types of woven PET fabrics were fabricated, consisting of the same warp yarn size and count, but different fill yarns (220, 500, and 1000 denier) and weave patterns (plain weave, 4-harness satin weave, and 8-harness satin weave). The fabrics were coated with neoprene latex using a dip-coating process. The coating penetration was much greater for the two-ply warp yarns than the fill yarns. Both coated and uncoated fabrics were tested. Shear tests and microscopy were used to understand the interaction between the fabric structure and the rubber coating. Results suggest that the shear behavior of the rubber-coated fabric is dominated by the rubber at low shear angles and by the fabric at higher shear angles. These results improve our ability to predict and prevent undesirable behaviors such as wrinkling, distortion and tear.

scholarly journals Examination of the Coating Method in Transferring Phase-Changing Materials

2021 ◽  
Author(s):  
Makbule Nur Uyar ◽  
Ayşe Merih Sarıışık ◽  
Gülşah Ekin Kartal
Keyword(s):  
Temperature Regulation ◽  
Melting Process ◽  
Impregnation Method ◽  
Thermal Camera ◽  
Method Performance ◽  
Fabric Structure ◽  
Coated Fabric ◽  
Melting Period ◽  
Coating Method ◽  
Fabric Surface

In this study, it is intended to identify the characteristics of heat regulation in heat storage microencapsulated fabrics and it is aimed to examine the effect of application method for microcapsules. For this purpose, phase-changing materials (PCM) microcapsules were applied according to the method of impregnation and coating on cotton fabrics. The presence and distribution of microcapsules on the fabric surface were investigated by scanning electron microscopy (SEM). The temperature regulation of the fabrics was examined utilizing the temperature measurement sensor and the data recorder system (Thermal camera). According to the DSC analysis, the melting process in fabrics coated with Mikrathermic P microcapsules occurred between 25.83oC - 31.04oC and the amount of heat energy stored by the cotton fabric during the melting period was measured as 2.70 J/g. Changes in fabric surface temperature due to the presence of microcapsules in the fabric structure were determined in the measurements. When comparing the transfer methods of PCM capsules, the contact angle of impregnated and coated fabric was obtained as 42o and 73o, respectively. As a result of the study, when the analysis results of the microcapsules transferred to the fabric by the impregnation and coating method are evaluated, it is seen that the PCM transferred fabric with the impregnation method performs more efficient temperature regulation. However, the analysis results show that fabrics transferred with PCM by coating also perform heat absorption, although not as much as the impregnation method. Performance evaluation according to the target properties of textile material will give the most accurate result for the fabrics which are treated by coating and impregnation method.

scholarly journals Heat Scanning for the Fabrication of Conductive Fibers

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1405
Author(s):  
Jina Jang ◽  
Haoyu Zhou ◽  
Jungbae Lee ◽  
Hakgae Kim ◽  
Jung Bin In
Keyword(s):  
Silver Nanowires ◽  
Building Blocks ◽  
Dip Coating ◽  
Coating Materials ◽  
Scanning Time ◽  
Silver Ink ◽  
Nylon Fiber ◽  
Coating Method ◽  
Conductive Fibers ◽  
Tubular Heater

Conductive fibers are essential building blocks for implementing various functionalities in a textile platform that is highly conformable to mechanical deformation. In this study, two major techniques were developed to fabricate silver-deposited conductive fibers. First, a droplet-coating method was adopted to coat a nylon fiber with silver nanoparticles (AgNPs) and silver nanowires (AgNWs). While conventional dip coating uses a large ink pool and thus wastes coating materials, droplet-coating uses minimal quantities of silver ink by translating a small ink droplet along the nylon fiber. Secondly, the silver-deposited fiber was annealed by similarly translating a tubular heater along the fiber to induce sintering of the AgNPs and AgNWs. This heat-scanning motion avoids excessive heating and subsequent thermal damage to the nylon fiber. The effects of heat-scanning time and heater power on the fiber conductance were systematically investigated. A conductive fiber with a resistance as low as ~2.8 Ω/cm (0.25 Ω/sq) can be produced. Finally, it was demonstrated that the conductive fibers can be applied in force sensors and flexible interconnectors.

scholarly journals The Effects on Thermal Efficiency of Yttria-Stabilized Zirconia and Lanthanum Zirconate-based Thermal Barrier Coatings on Aluminum Heating Block for 3d Printer

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 792
Author(s):  
Hasan Demir
Keyword(s):  
Temperature Distribution ◽  
Heat Loss ◽  
Yttria Stabilized Zirconia ◽  
Thermal Barrier ◽  
Print Quality ◽  
Stabilized Zirconia ◽  
Coating Materials ◽  
Lanthanum Zirconate ◽  
Barrier Coating ◽  
Coating Method

Fused filament fabrication is an important additive manufacturing method, for which 3D printers are the most commonly used printing tools. In this method, there are many factors that affect the printing quality, chief among which is temperature. The fusion temperature of the material is created by an aluminum heating block in the extruder. Stability and a constant temperature for the aluminum heating block are inevitable requirements for print quality. This study aims to use the thermal barrier coating method to increase the thermal efficiency and stability of the aluminum heating block by reducing heat loss. Furthermore, it aims to perform steady-state thermal analysis using finite element analysis software. The analyses are carried out in stagnant air environment and at the printing temperature of acrylonitrile butadiene styrene material. In order to examine the effects of different coating materials, blocks coated with two different coating materials, as well as uncoated blocks, were used in the analyses. The coating made with yttria-stabilized zirconia and pyrochlore-type lanthanum zirconate materials, together with the NiCRAl bond layer, prevent temperature fluctuation by preventing heat loss. The effects of the coating method on average heat flux density, temperature distribution of blocks, and temperature distribution of the filament tube hole were investigated. Additionally, changes in flow velocity were determined by examining the effects of the thermal barrier coating method on temperature distribution. The average heat flux density in the coated blocks decreased by 10.258%. Throughout the investigation, the temperature distributions in the coated blocks became homogeneous. It was also observed that both coating materials produce the same effect. This article performs a steady-state thermal analysis of a conventional model and thermal-barrier-coated models to increase print quality by reducing heat loss from the aluminum heating block.

Mechanical properties of PVDF-coated fabric under tensile tests

2015 ◽  
Vol 35 (4) ◽  
pp. 377-390 ◽  
Author(s):  
Andrzej Ambroziak
Keyword(s):  
Mechanical Properties ◽  
Polyvinylidene Fluoride ◽  
Cyclic Load ◽  
Tensile Tests ◽  
Woven Fabrics ◽  
Uniaxial Tensile ◽  
Cyclic Tests ◽  
Comprehensive Investigation ◽  
Coated Fabric ◽  
Coated Fabrics

Abstract This article describes the laboratory tests necessary to identify the mechanical properties of the polyvinylidene fluoride (PVDF)-coated fabrics named Precontraint 1202S and Precontraint 1302S. First, a short survey of the literature concerning the description of coated woven fabrics is presented. Second, the material parameters for PVDF-coated fabrics are specified on the basis of biaxial tensile tests. A comparison of the 1:1 biaxial and the uniaxial tensile tests results is also given. Additionally, biaxial cyclic tests were performed to observe the change of immediate mechanical properties under cyclic load. The article is aimed as an introduction to a comprehensive investigation of the mechanical properties of coated fabrics.

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