Розділ 1. Композиційні матеріали на основі полімерів (матеріали, технології, обладнання, вибори)

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https://ela.kpi.ua/handle/123456789/61992

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Перегляд Розділ 1. Композиційні матеріали на основі полімерів (матеріали, технології, обладнання, вибори) за Автор "Bilousova, Anna"

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  • Ескіз
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    Effect of nanoscale additives and ultraviolet stabilizers on the destruction of thin-layer coatings under the influence of UV radiation
    (Liha-Pres, 2023) Maniecki, Tomasz; Bilousova, Anna
    The destruction of paint and varnish coatings in atmospheric conditions is a problematic niche of today, which makes it urgent to identify the negative impact of nanoparticles on the stability of water repellency and the need for further research on improving the stability of water repellency for systems intended for use in atmospheric conditions. The author of the article investigates the effect of the introduction of nanoscale additives and ultraviolet stabilizers into thin-layer coatings on their destruction under the influence of ultraviolet radiation.
  • Ескіз
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    The effect of pyrogenic SIO2 nanoparticles on the photodegradation of polymer coatings when exposed to UV irradiation
    (Liha-Pres, 2023) Myronyuk, Oleksiy; Baklan, Denys; Bilousova, Anna
    The study investigates the impact of functionalized silica nanoparticles on the photodestruction of styrene acrylic polymer-based coatings. The research uses infrared spectroscopy, ablation speed, and water contact angle measurements to analyze the UV degradation of thin layer coatings under accelerated aging conditions. HALS amine loaded coatings are used as a reference. Results show that the photodegradation of the silica nanoparticles-polymer composite thin film coatings is influenced by two factors: screening of UV radiation and increased polymer hydrophilization speed. At nanoparticle loads over 15 wt. %, the thickness ablation speed decreases from 1.3 to 1.2 μm/h, and the contact angle sharply drops to 40 from the initial 89 within the first 30 minutes of exposure.