Abstract
The transport sector is the fastest growing contributor to climate emissions and experiences the highest growth in energy use. This study explores the use of TiO2 nanoparticles for obtaining photocatalytic nanocomposites with improved infrared reflectance properties. The nanocomposites were prepared by dispersing 0–20 wt% of TiO2 nanoparticles in an unsaturated polyester resin. The effect of TiO2 on the curing kinetics was studied by differential scanning calorimetry, showing a significant delay of the curing reactions. The thermal reflectance of the modified resins was characterized by UV-Vis-NIR spectrophotometry, measuring total solar reflectance (TSR). The TiO2 greatly increased the TSR of the resin, due to the reflectance properties of the nanoparticles and the change in color of the modified resin. These nanocomposites reflect a significant part of near-infrared radiation, which can contribute to a reduction of the use of heating, ventilation, and air conditioning. Moreover, the photocatalytic effect of the TiO2 modified nanocomposites was studied by monitoring the degradation of an organic model contaminant in an aqueous medium under UV light, and the reusability of the nanocomposites was studied with 5 cycles. The developed nanocomposites are proposed as a solution for reducing global warming and pollutant emissions.
Highlights
Transportation is an essential part of human activity which supports socio-economic activities
The heating setup mainly consisted of a 100 W infrared lamp mounted at the top, a test box made of insulated polyurethane boards and a multichannel temperature measuring system
The effect of TiO2 nanoparticles on the curing kinetic of the unsaturated polyester resin was studied by differential scanning calorimetry, in dynamic and isothermal modes
Summary
Transportation is an essential part of human activity which supports socio-economic activities. Panels in refrigerated reduction have been explored for these vehicles, focused on the use o vehicles remain the channel through which heat infiltration into the cooling chamber is different insulation materials with low thermal conductivity, such as porous polyme controlled [6]. The modification of thermo-optical properties of the external glass fiber/resi strategies explore the use of phase change materials (PCMs) with a high thermal storage composite inthermal the panels can be an interesting alternative. Has beenefficiency reported density for energy storage (TES), which offers enhancingItthe energy of that th thermo-optical properties of thesystems external surface the vehicle bodywork can account fo cold storage and transportation [10,11,12], butof the effect of PCM is conventionally short in time. The developed nanocomposites are proposed as a solution for reducing global warming and pollutant emissions
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