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Information × Registration Number 0224U033563, (0123U103016) , R & D reports Title Polymer-defecs CNT composite materials for effective absorption coatings based on stochastic conducting networks popup.stage_title встановлення механізмів поглинання/відбивання ІЧ-випромінювання в досліджуваних композитах та впливу товщини зразків на зазначені параметри. Head Mykhailova Halyna Yu., Кандидат фізико-математичних наук Registration Date 30-12-2024 Organization Institute of Metal Physics. G.V. Kurdyumov of the National Academy of Sciences of Ukraine popup.description1 Method of the synthesizing absorbent thin films based on polymer-CNT composites, determining the nature of the absorptive capacity of these composites in the IR frequency range of electromagnetic radiation and creating on this basis new compact, light and highly effective absorbing coatings of electromagnetic radiation in the military and energy spheres popup.description2  The properties of a nanocomposite based on polytetrafluoroethylene with carbon nanotubes of different defectivity and content depending on the conditions of the synthesis of a thin film, which affect the absorption properties of the obtained samples, and the distribution of components in the nanocomposite, were investigated. It was found that the synthesis of samples based on a polymer matrix with the addition of carbon nanotubes containing synthesis defects at a temperature of 230°C contributes to the partial preservation of the granular structure of the polymer in the composite with the formation of a continuous polymer matrix that envelops the CNTs. During directional rolling, the CNTs are mainly oriented along its direction. Directional rolling of the composite at elevated temperatures allows obtaining samples with a predominant orientation of the CNTs along the rolling direction. The obtained samples are opaque to IR radiation. In the presence of contact between the composite sample and the heated surface, the intrinsic radiation of the samples becomes noticeable, depending on the thickness and composition of the sample, after a time of several seconds to several minutes, while the opacity of the material in the IR range remains, which indicates the possibility of using such materials as absorbing coatings. Product Description popup.authors Lebed Vitalii S. popup.nrat_date 2024-12-30 Close