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Infl uence of the content of impurities and grease on the results of heat resistance and hair cover dielectricity on the basis of wool from Huacaya alpaca and Racka sheep. In recent years, the test method has become more and more popular by defi ning the electrical characteristics of various materials. The test is based on the difference in characteristic of the material in the electromagnetic fi eld, which is described by the level of resistance or dielectric properties of the test material. The use of phenomena related to current fl ow and resistance makes it possible to evaluate the material being tested. Determination of the material quality by this method shows differences at molecular level, which makes it more accurate than in the case of traditional methods. The study investigated the effect of impurities and grease content on the results of heat resistance and dielectricity on hair cover on the basis of wool from Huacaya alpaca and Hungarian’s Racka sheep. Studies have shown that washed wool has a better dielectric strength than greasy wool, as it has a higher resistance (P < 0.05). Wool from the Racka sheep contained more organic, organic matter and grease than alpaca wool, so the heat insulation of sheep was higher than in alpaca. Research has also shown that greasy matter together with non-organic and organic infl uences the results of electric characteristics testing, reducing wool resistance of the tested species. Wool wash affected the level of heat resistance of sheep wool and alpaca wool (P < 0.05). To conclude, washed wool is a better dielectric, which has a more positive effect on the skin coatings of people wearing clothes. However, wool washing causes a decrease in the thermal insulation of the wool.

annals of warsaw university of life sciences-sggw. animal sciences

Influence of the content of impurities and greasy on the results of heat resistance and hair cover dielectricity on the basis of wool from Huacaya alpaca and Racka sheep