Badania właściwości termoizolacyjnych tkanin odzieżowych

Istnieje wiele metod i przyrządów do oceny termoizolacyjności materiałów włókienniczych. W referacie przedstawiono wyniki badań za pomocą: "modelu skóry", Alambety, Thermo Labo II i Permetesu właściwości termoizolacyjnych tkanin odzieżowych o programowo zróżnicowanej strukturze. Omówiono zasady działania poszczególnych przyrządów oraz przeprowadzono analizę porównawczą wyników otrzymywanych za pomocą ww. przyrządów pomiarowych.

Thermal comfort is an outcome of many factors connected with the human body, climatic conditions of environment and clothing, which is a barrier protecting the human organism against a negative influence of external factors. The influence of the clothing on the heat exchange between the human body and surroundings is very complicated. It depends on many factors such as: air temperature, air movement and humidity. No less important role is played by the raw material as well as the micro- and macrostructure of clothing. There are a lot of properties characterizing the thermal insulation of fabrics. Thermal resistance, water-vapor resistance and air permeability are considered as the most important comfort-related properties of fabrics. Thermal insulation properties of textiles can be assessed by different measurement devices. Sweating guarded - hot plate test (Fig. 1) is commonly known and applied in practice. The method is standardized in Polish Standard [1]. Other devices: Alambeta (Fig. 2), Thermo Labo II and Permetest (Fig. 3) are relatively new and their application is not widespread up till now. In the presented work the measurement of fabrics was taken by means of the sweating guarded hot plate test, Alambeta, Thermo Labo II and Permetest. The woven fabrics of the intentionally changed structure were an object of the investigation. The comparison of the results obtained from the used testing devices was performed in order to assess the agreement between the readings from all instruments (Figs. 4-6).