Application of Silica Aerogel in Composites Protecting Against Thermal Radiation

• Autorzy: Krzemińska Sylwia , Cieślak Małgorzata , Kamińska Irena , Nejman Alicja

Identyfikatory

DOI

10.2478/aut-2020-0008

• Języki publikacji: EN

Abstrakty

EN

Aerogels are characterized by excellent insulation properties and a good resistance to high and low temperatures. The objective of this study was to investigate the effects of silica aerogel on thermal properties of textile–polymer composites. Aerogel was applied in protective clothing fabric to improve its heat resistance. The composites were produced by coating a fabric made of meta-aramid (polyamide–imide) yarns with a dispersion of polychloroprene latex and synthetic resins or an acrylic–styrene dispersion with aerogel (100–700 μm particle size). The composites were subjected to thermal radiation (20 kW/m2) and their thermal properties were determined by thermogravimetry/derivative thermogravimetry (TG/DTG). Scanning electron microscopy/X-ray energy dispersive spectroscopy (SEM/EDS) was used to characterize the microstructure and study the elemental composition of materials. The thermal conductivity and resistance of composites were measured with an Alambeta apparatus. The tests indicated an increase in resistance to thermal radiation by approximately 15–25%. In TG/DTG analysis, the initial temperature for an unmodified fabric was 423.3°C. After modification, it decreased to 361.8° and 365.3°C for composites with 7 and 14% of aerogel, respectively. SEM images revealed a reduction in aerogel particle size.

Słowa kluczowe

EN

radiation resistance; exposure; radiant heat; silica aerogel; aerogel composites; thermal conductivity; SEM/EDS; TG/DTG; protective clothing

PL

odporność na promieniowanie; promieniowanie cieplne; aerożel krzemionkowy; kompozyty aerożelowe; przewodność cieplna; SEM/EDS; TG/DTG; odzież ochronna

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2020
• Tom: Vol. 20, no. 3
• Strony: 274--287
• Opis fizyczny: Bibliogr. 40 poz.

Twórcy

autor

Krzemińska Sylwia

• Central Institute for Labour Protection-National Research Institute (CIOP-PIB), Czerniakowska 16, 00-701 Warsaw, Poland

autor

Cieślak Małgorzata

• Łukasiewicz Research Network – Textile Research Institute, Brzezińska 5/15, 92-103 Lodz, Poland

autor

Kamińska Irena

• Łukasiewicz Research Network – Textile Research Institute, Brzezińska 5/15, 92-103 Lodz, Poland

autor

Nejman Alicja

• Łukasiewicz Research Network – Textile Research Institute, Brzezińska 5/15, 92-103 Lodz, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).