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<p>The effect of pressure in a hydraulic tension system of guiding rollers on the porosity coefficient and mechanical properties of materials produced by thermomechanical treatment of nonwoven needle-punched fabrics based on polyethylene terephthalate and bicomponent fibers in ratios of 90/10 and 70/30 wt% was studied. A diagram of the equipment used to expose the fabric to heat and pressure in the gap between a heated metal roller and a conveyor belt was presented. Highly porous materials with a porosity coefficient &gt;0.8, regulated stretching resistance and strength that depended on the bicomponent fiber content were obtained. The porosity coefficient of the materials was practically independent of the bicomponent fiber content. The mechanism of stretching and breakage of the fabrics and treated materials was substantiated. Thermomechanical treatment modes in which the tensile strength of the fabrics depended on the fiber strength were established.</p>

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Influence of Treatment Modes on Physicomechanical Properties of Materials with Various Contents of Bicomponent Fibers

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • V. G. Nazarov,
  • N. I. Godin,
  • A. V. Dedov

摘要

The effect of pressure in a hydraulic tension system of guiding rollers on the porosity coefficient and mechanical properties of materials produced by thermomechanical treatment of nonwoven needle-punched fabrics based on polyethylene terephthalate and bicomponent fibers in ratios of 90/10 and 70/30 wt% was studied. A diagram of the equipment used to expose the fabric to heat and pressure in the gap between a heated metal roller and a conveyor belt was presented. Highly porous materials with a porosity coefficient >0.8, regulated stretching resistance and strength that depended on the bicomponent fiber content were obtained. The porosity coefficient of the materials was practically independent of the bicomponent fiber content. The mechanism of stretching and breakage of the fabrics and treated materials was substantiated. Thermomechanical treatment modes in which the tensile strength of the fabrics depended on the fiber strength were established.