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Osmanov Z.N., Kurdenkova A.V., Bulanov Ya.I. Study of mechanical properties under compression of non-woven insulation materials taking into account operating conditions. Journal of Clothing Science. 2026; 11(1). Available at: https://kostumologiya.ru/PDF/08TLKL126.pdf (in Russian).

Study of mechanical properties under compression of non-woven insulation materials taking into account operating conditions

Osmanov Zaur Nurbievich
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
E-mail: osmanov-zn@rguk.ru
RSCI: https://elibrary.ru/author_profile.asp?id=788845

Kurdenkova Alla Vyacheslavovna
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
E-mail: akurdenkova @yandex.ru
ORCID: https://orcid.org/0000-0003-1024-2890
RSCI: https://elibrary.ru/author_profile.asp?id=678649

Bulanov Yaroslav Igorevich
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
E-mail: bulanov-yai@rguk.ru
ORCID: https://orcid.org/0000-0001-6224-6012

Abstract. This article presents the results of an experimental study of the deformation behavior of nonwoven insulation materials, Hollowfiber Volumetric and Soft, under compressive forces, with surface densities ranging from 70 to 600 g/m². This study focuses on analyzing the influence of structure, density, and external conditions on the material’s ability to resist compression and restore its original shape. The methodology included determining elastic and plastic deformation and compressibility under static loads (250, 500, and 1 000 g), assessing changes in maximum compressive force in the temperature range from +20°C to -20°C, and studying irreversible deformation during high-cycle loading (up to 2 000 cycles).

It was found that increasing the material’s density increases its rigidity, reducing compressibility and residual deformation. A decrease in temperature leads to a 20–25 % decrease in the required compressive force. The most intense irreversible deformation (up to 27 % of the initial thickness) occurs during the first 500 loading cycles, after which the process stabilizes. The results show that the material structure plays a key role: a looser fibrous structure of the fabric, with equal density, exhibits slightly greater initial compressibility but better elasticity after the removal of light loads. The obtained quantitative dependences of deformation characteristics on key factors enable a scientifically sound approach to the selection and design of products that require dimensional stability and thermal insulation properties under long-term variable mechanical and climatic loads.

Keywords: nonwoven materials; compression deformation; elasticity; compressibility; residual deformation; temperature dependence; cyclic loading; surface density

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