Preparation and characterization of heat-insulating Ag/TiO 2 composite membranes based on magnetron sputtering technolog
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THE SCIENCE AND TECHNOLOGY OF VAPOR PHASE PROCESSING AND MODIFICATION OF SURFACES
Preparation and characterization of heat-insulating Ag/TiO2 composite membranes based on magnetron sputtering technology Tingting Zhuo1, Shan He1, Binjie Xin1,a) Mingyu Zhuang1
, Zhuoming Chen1,b), Xiaoxia Liu1,
1
School of Fashion Technology, Shanghai University of Engineering Science, Shanghai 201620, China Address all correspondence to these authors. e-mail: [email protected] b) e-mail: [email protected] a)
Received: 9 June 2019; accepted: 7 October 2019
Silver/titanium dioxide (Ag/TiO2) membranes were successfully deposited on poly(sulfone amide) substrates by direct current magnetron sputtering and radio frequency magnetron sputtering techniques with pure silver (Ag) and TiO2 targets. The prepared membranes were systematically characterized by scanning electron microscopy X-ray diffraction, insulation tests, and Fourier transform infrared spectrometry. The dependence of the main sputtering parameters on optical and thermal properties of the film was investigated by an orthogonal analysis method. Optimal parameters of fabricate Ag/TiO2 membranes with better comprehensive performances could be obtained ultimately. The infrared reflection rate and temperature difference of the Ag/TiO2 film deposited with the optimized parameters were 81.6% and 90 °C, respectively. The high infrared reflection and excellent thermal conductivity properties of the Ag/TiO2 composite membrane make it a promising candidate for thermal insulating coatings on fabrics, and can be used for the development of high-performance protective garments in the future.
Introduction There are strong demands for heat-insulated textiles in fields of human and industrial protection. Robots, instead of humans, are also required to be protected during the automatic industrial manufacturing process. In order to prolong the service lives of robots in the extremely unsafe and abominable working environment, protective measures, such as external covering suits, should be executed accordingly [1, 2]. By far, there are many research works on the preparation methods to design and assemble heatinsulated textiles, such as traditional textile finishing, chemical plating [3], and plasma impulse chemical vapor deposition [4]. However, problems such as long time-consuming reactions, high temperature, and complex processes have limited its application. Thus, a simple, high-speed, and low-temperature [8, 9, 10] process for the preparation of heat-insulated textiles is still necessary to meet the economic and industrial needs. Magnetron sputtering deposition [5, 6, 7] is considered as one of the most effective deposition methods to produce thin films, and it can be further used to prepare antibacterial films [12, 13], optical films [20, 27, 28],
ª Materials Research Society 2019
insulated films, infrared reflective films [11], and so on. In addition, magnetron sputtering technology was first used to prepare functional films on smooth substrates, and the properties of the films were found
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