Scholarlink

<p>Double-core microcapsules encapsulating polyalphaolefin 40 (PAO40) oil and polytetrafluoroethylene (PTFE) particles were synthesized using the solvent evaporation method. The synthesized microcapsules adopted the heat-resistant polysulfone (PSF) as the shell material, rendering them suitable for flame spray deposition together with polyamide 11 (PA11) powders to fabricate PA11/microcapsule composite coatings with enhanced tribological performance. Microstructural observations showed that PAO40-PTFE@PSF double-core microcapsules had spherical morphology, distributed uniformly in the flame-sprayed PA11 coatings, and adhered well to the coating matrix. The tribological performance of PA11 coatings was investigated before and after the incorporation of different lubricants including PTFE particles, PAO40@PSF single-core microcapsules, and PAO40-PTFE@PSF double-core microcapsules. Results showed that compared with PTFE particles and PAO40@PSF single-core microcapsules, PAO40-PTFE@PSF double-core microcapsules exhibited the best enhancement effect on the tribological performance of PA11 coatings thanks to the liquid–solid synergistic lubrication between PAO40 oil and PTFE particles. Specifically, the PA11 composite coating containing 7&#xa0;wt.% PAO40-PTFE@PSF double-core microcapsules achieved a 77.8% reduction in the friction coefficient and a 95.8% reduction in the wear rate in comparison with the pure PA11 coating. This work is expected to promote the application of polymer/microcapsule composite coatings in mechanical components.</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

Incorporation of Double-Core Microcapsules into Flame-Sprayed Polyamide Coatings toward Significant Enhancement in Tribological Performance

  • 期刊论文

  • 发表日期：

    2025年12月8日

查看全文
  • Linglong Hu,
  • Zhaoxiang Chen,
  • Limei Ren,
  • Jingbo Wang,
  • Yan Li,
  • Lihe Qian

摘要

Double-core microcapsules encapsulating polyalphaolefin 40 (PAO40) oil and polytetrafluoroethylene (PTFE) particles were synthesized using the solvent evaporation method. The synthesized microcapsules adopted the heat-resistant polysulfone (PSF) as the shell material, rendering them suitable for flame spray deposition together with polyamide 11 (PA11) powders to fabricate PA11/microcapsule composite coatings with enhanced tribological performance. Microstructural observations showed that PAO40-PTFE@PSF double-core microcapsules had spherical morphology, distributed uniformly in the flame-sprayed PA11 coatings, and adhered well to the coating matrix. The tribological performance of PA11 coatings was investigated before and after the incorporation of different lubricants including PTFE particles, PAO40@PSF single-core microcapsules, and PAO40-PTFE@PSF double-core microcapsules. Results showed that compared with PTFE particles and PAO40@PSF single-core microcapsules, PAO40-PTFE@PSF double-core microcapsules exhibited the best enhancement effect on the tribological performance of PA11 coatings thanks to the liquid–solid synergistic lubrication between PAO40 oil and PTFE particles. Specifically, the PA11 composite coating containing 7 wt.% PAO40-PTFE@PSF double-core microcapsules achieved a 77.8% reduction in the friction coefficient and a 95.8% reduction in the wear rate in comparison with the pure PA11 coating. This work is expected to promote the application of polymer/microcapsule composite coatings in mechanical components.