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Magnetic properties of hematite (α − Fe2O3) nanoparticles synthesized by sol-gel synthesis method: The influence of particle size and particle size distribution

, pp. 752, 2018. [10] Z. Shaoqiang, T. Dong, Z. Geng, H. Lin, Z. Hua, H. Jun, L. Yi, L. Minxia, H. Yaohua and Z. Wei, “The influence of grain size on the magnetic properties of Fe 3 O 4 nanocrystals synthesized by solvothermal method”, Journal of Sol-Gel Science and Technology , pp. 1–8, 2019. [11] J. Mohapatra, F. Zeng, K. Elkins, M. Xing, M. Ghimire, S. Yoon, S. R. Mishra and J. P. Liu, “Size-dependent magnetic and inductive heating properties of Fe 3 O 4 nanoparticles: scaling laws across the superparamagnetic size”, Physical Chemistry Chemical

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Using Sandblasting and Sol Gel Techniques for the Preparation of a Metal Surface and Their Effects on the Durability of Epoxy-Bonded Joints

Abstract

The epoxy-bonded joints are widely employed in aerospace in the Composite Patch Bonded Repair (CPBR) method used for repair metallic and composite structures. The properties of epoxy usually meet the mechanical and environmental requirements, but the durability of bonded joints depends also on the surface preparation.

The most common techniques used for the surface preparation are Forest Product Laboratory’s (FPL) technique and Phosphoric Acid Anodizing (PAA). Both methods ensure very good adhesion but they have some disadvantages. They require the application of toxic and aggressive acids, dangerous for the operator. Also, the use of acids for cleaning the surfaces can cause corrosion.

The sandblasting treatment of metal surfaces ensures quite good adhesion. This technique requires neither specialist equipment nor the use of toxic substances. Recommended by the Royal Australian Air Force (RAAF) the technique is also used by the Air Force Institute of Technology.

Sol Gel is a new product developed for the treatment of metal surfaces before bonding. It is not hazardous for the operator and it does not cause corrosion due to its specific chemical composition.

The article describes the behavior of bonded joints between two metal surfaces prepared using sandblasting and Sol Gel. The investigations were carried out in various environment conditions according to the ASTM Standards.

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A Study on Electrical Performances and Lifetime of a Flexible Electrochromic Textile Device

Abstract

Using their ability to change their color according to an external stimulation, chromic materials can be used to form a color-changing textile. Electrochromism, more particularly, is a colour change phenomenon caused by the application of an electrical potential. A flexible textile electrochromic device composed of four layers is presented. In order to improve the lifetime of this structure, the electrical performances of the electrolyte layer are studied. A method to measure and calculate the resistance variations of the electrolyte applied on a textile cotton substrate is given. Relations between the electrical performances of the electrolyte and the electrochromic effect of the device are also highlighted.

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Characterization of TiO2 films obtained by a wet chemical process

ZhanyingZhang, “Thickness-dependent electron transport performance of mesoporous TiO 2 thin film for dye-sensitized solar cells”, Electrochimica Acta vol. 114 (2013) 318-324. [5] S. R. Meher and L. Balakrishnan, “Sol-gel derived nanocrystalline TiO 2 thin films: A promising candidate for self-cleaning smart window applications”, Materials Science Semiconductor Processing vol. 26 (2014) 251-258. [6] R. Dunford, A. Salinaro, L. Cai, N. Serpone, S. Horikoshi, H. Hidaka and J. Knowland, “Chemical oxidation and DNA damage catalysed by inorganic sunscreen

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Photostability of TiO2-Coated Wool Fibers Exposed to Ultraviolet B, Ultraviolet A, and Visible Light Irradiation

(6), 413-417. [20] Montazer, M. Pakdel, E. (20112). Functionality of nano titanium dioxide on textiles with future aspects: Focus on wool. Journal of Photochemistry and Photobiology C-Photochemistry Reviews, 12(4), 293-303. [21] Pakdel, E., Daoud, W. A., Wang, X. G. (2015). Assimilating the photo-induced functions of TiO 2 -based compounds in textiles: Emphasis on the sol-gel process. Textile Research Journal, 85(13), 1404-1428. [22] Montazer, M., Amiri, M. M., Reza, M. A. M. (2013). In situ synthesis and characterization of nano ZnO on wool: Influence

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Study on the Use of Aerogel on the Surface of Basalt Fabric

., Zhong, Y., Mao, Z. (2017). Preparation and characterization of thermal protective aluminum hydroxide aerogel/PSA fabric composites. Journal of Sol-Gel Science and Technology, 82, 370-379. [10] Kumbhar, V. P. (2014). An overview: Basalt rock fibers – New construction material. Acta Engineering International, 2(1), 11-18. [11] Frydrych, I. (2008). Clothing material science - Raw materials on the protective clothing. Part I: Clothing protecting against fire (in Polish). Przegląd Włókienniczy – Włókno Odzież Skóra, 6, 29-33. [12] Militký, J., Kovačič, V

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Single-Step Antimicrobial And Moisture Management Finishing Of Pc Fabric Using Zno Nanoparticles

Abstract

Functionalization of textile fabrics with metal oxide nanoparticles can be used to add antibacterial and moisture management properties to them. Current work focuses on the development of these properties on polyester/cotton woven fabrics by treating them with zinc oxide nanoparticles for workwear and sportswear applications. Zinc oxide nanoparticles, prepared by sol-gel method, were applied on fabric samples, which were then tested for antibacterial and moisture management properties using standard test methods AATCC 147 with Staphylococcus aureus and AATCC 195, respectively. It was found that application of ZnO nanoparticles improved both these properties with smaller particle imparting larger effects on both of them.

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Production Method that Leads to TiO2 Nanofibrous Structure Usable in Food Packaging

-3-319-05203-8. WETCHAKUN, N. – INCESSUNGVORN, B. – WETCHAKUN, K. 2012. Influence of calcination temperature on anatase to rutile phase transformation in TiO 2 nanoparticles synthesized by the modified sol–gel method. In Materials Letters, vol. 82, 2012, September, pp. 195–198.

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Use of short fibers as a filler in rubber compounds

References [1] Hashim A.S. et al., Silica reinforcement of epoxidized natural rubber by the sol-gel method. Journal of Sol-Gel Science and Technology, 5, 1995, 211-218. [2] Zhang Y. et al., Effect of Carbon Black and Silica Fillers in Elastomer Blends, Macromolecules, 34, 2001, 7056-7065. [3] Kalaprasad G.N. et al., Crab Shell Chitin Whisker Reinforced Natural Rubber Nanocomposites. 1. Processing and Swelling Behavior, Biomacromolecules, 4, 2003, 657-665. [4] De D. et al., The effect of grass fiber filler on curing characteristics and

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Nanocrystalline proprieties of TiO2 thin film deposited by ultrasonic spray pulverization as an anti-reflection coating for solar cells applications

. 11(7) (2010) 786-790. [8] S. M, Jung, Y.H. Kim, S. I. Kim and S. I. Yoo, “Design and fabrication of multi-layer anti-reflection coating for III-V solar cell”, Current Applied Physics , vol. 11 (2011) 538-541. [9] S. Kermadi, N. Agoudjil, S. Sali, M. Boumaour, S. Bourgeois and M. C. Marco de-Lucas, “Sol-gel synthesis of xTiO 2 (100-x) SiO 2 nanocomposite thin films: Structure, optical and anti-reflection properties”, Thin Solid Films , vol. 564 (2014) 170-178. [10] Zhaoyong Wang, Ning Yao and Xing Hu, “Single material TiO 2 double layers anti

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