The physical properties of the surface of apparel made from flax and polyester fibres

Abstract

In this paper, the clothes made of synthetic and natural fibres were tested. The characteristics of selected physical parameters such as temperature, electrical resistance, thermal resistance of fabrics used for tested clothes have been presented. The electrostatical charge and temperature distribution of clothes were investigated on human body. The temperature distribution and the coefficient of heat transmission were measured by a new thermovision method.

Quantitative characterization of vapour adsorption on solid surfaces and estimation of emissivity of solids using infrared thermography

“…Rearranging (14) in view of (13) gives (15) sets up a correspondence between experimentally registered temperature deviation (excess) of the adsorbent surface and the degree of occupation of this surface by sorbed molecules (atoms). The inverse ratio ∆T (n) derived from (15) can be called "thermal index of adsorption".…”

“…Substitution of the same parameters in (15) as were substituted in (13) and also substitution of r = 4.4 × 10 6 J/kg (water vapour), µ = 18 × 10 -3 kg/mole (water) and ∆T = 10 -2 K in (15) give us the realistic values n = 3 × 10 17 m -2 (for η = 1) and n = 1.5 × 10 17 m -2 (for η = 2). In view of the fact that one square meter of the solid surface contains approximately 10 20 atoms of matter, the obtained values n distinctly show that the characteristic effective sensitivity of the described IRT method expressed in terms of the ratio between the IR camera registered number of adsorbate molecules and the number of adsorbent surface atoms can reach a value as small as 1/300 monolayer (!)…”

“…A lot of methods are devised for fabric testing. Certain efforts have been made to incorporate IR cameras into these tests [13,15]. With these cameras, heating of manufactured articles and materials under deformation has been investigated, permeability of sailcloths has been studied, the coefficient of heat transmission has been measured, etc.…”

Quantitative characterization of vapour adsorption on solid surfaces and estimation of emissivity of solids using narrow-band short-wave infrared thermography

“…A lot of methods are devised for testing of fabric porosity, friability, downiness, hairiness, etc. Certain efforts have been made to incorporate properly the IR cameras into these tests (Mikolajczyk et al, 1998;Zimniewska et al, 2003). The physical principle brought to light in the present work allows establishing a hierarchy of any Downloaded by [North Dakota State University] at 16:26 04 November 2014 tested fabrics (Table 1).…”

The effect of raw material composition of clothes on selected physiological parameters of human organism

“…The tests on the degree of electrostatic charges collection were conducted by measuring the potential difference of an electrostatic field at the fixed distance 15 mm from the shirt. The measurements were done by a rotation meter of HAUG Company (Zimniewska, Michalak, Krucińska, & Wi ecek, 2003). Regardless of the end-use finish of tested fabric, the user wearing polyester clothes is permanently exposed to electrostatic field.…”