Using three types of yarns with metal filaments, textile samples with various arrangements of yarns were made and additionally coated with polyurethane and graphite layer. The aim of the study is to identify the metal filaments fabrics with the highest shielding effectiveness (SE) and influence of graphite layer on it, using a waveguide method and network analyzer with radiated frequency from 2.6 – 3.6 GHz. Layer of graphite improves the SE properties, although, some uncoated samples have higher SE for definite frequencies.
-The aim of the study is to clarify the EMF shielding effectiveness (SE) of textiles with metallized yarns depending on their combinations and the position of samples with respect to the radiation source. For developing of the samples 3 types of metallized threads were used. Single and double jersey samples were made with manual flat knitting machines (gauges E7 and E10). To measure SE, two methods were used. The samples were placed between the radiation source and the detector and radiated with frequencies of 1.161 GHz and 870 MHz. The average result of SE is 92 % for all knitted fabrics produced in this study.
Abstract. The aim of the study -the development of textile screen printed sensor for enuresis alarm system, using different concentrations of graphite in paste and various width of traces (3, 5, 7 mm).The most optimal parameters of concentration (22%) and width (7 mm) of traces, which were printed on sateen weave cotton fabric, are found by measuring the resistivity and the change of voltage in time during dropping the salty dilution.The more graphite concentration and width, the less resistivity is observed.
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