Rationale of test parameters for determining textile fibers blending unevenness using the capacitance method

The article is devoted to the development of a method for assessing the fibers blending unevenness in textiles. The relevance of research on this topic is associated with the constant expansion of the range of materials and increasing quality requirements. Improving the uniformity of the distribution of dissimilar fibers in the structure of textile materials will allow for more efficient use of raw materials and improve the competitiveness of manufactured products. The objective of this study is to experimentally validate the use of a capacitance method and justify the test parameters for assessing fiber blending unevenness in heterogeneous textiles. Samples of various combinations of cotton and polyester fibers were used as test objects. Agilent E4980A and Agilent E4285A impedance meters were used to record capacitance values. The study experimentally validated the concept of developing a capacitance method for assessing textile fiber blending unevenness based on the different effects of sample composition on capacitor capacitance at low and high electric field frequencies. It is recommended that the low electric field frequency be set to 10 kHz and the maximum frequency be set in the range of 1 to 10 MHz for developing the method for assessing blending unevenness. These values can be adjusted based on the design and measurement system and the technical characteristics of its components.