Scholarlink

<p>This paper investigates the structural, mechanical and tribological properties of polymer composite materials based on polytetrafluoroethylene and carbon nanotubes. The dependence of the properties of the composite materials on the filler concentration and the pressing mode is shown. A cold pressing method involving the application of ultrasonic vibrations and low-frequency amplitude modulation is proposed, which significantly increases the tribological characteristics of composite materials. The use of ultrasonic vibrations with low-frequency modulation when pressing PTFE modified with 1.5 mass. % carbon nanotubes. An increase in the tensile strength of 10 %, an increase in the elastic modulus of 16 % and a decrease in the mass wear rate of 15 % contributed to an increase in the tensile strength.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The effect of ultrasonic and low-frequency vibrations during pressing on the morphology and tribological properties of a polymer composite

  • 期刊论文

  • 发表日期：

    2025年3月3日

查看全文
  • Dmitriy A. Negrov,
  • Vitaliy Yu. Putintsev,
  • Egor V. Knyazev

摘要

This paper investigates the structural, mechanical and tribological properties of polymer composite materials based on polytetrafluoroethylene and carbon nanotubes. The dependence of the properties of the composite materials on the filler concentration and the pressing mode is shown. A cold pressing method involving the application of ultrasonic vibrations and low-frequency amplitude modulation is proposed, which significantly increases the tribological characteristics of composite materials. The use of ultrasonic vibrations with low-frequency modulation when pressing PTFE modified with 1.5 mass. % carbon nanotubes. An increase in the tensile strength of 10 %, an increase in the elastic modulus of 16 % and a decrease in the mass wear rate of 15 % contributed to an increase in the tensile strength.