Scholarlink

<p>Fused filament fabrication (FFF) presents a viable method for creating complex porous structures from high-performance polymers like poly(ether-ether-ketone) (PEEK), desirable for medical and aerospace applications due to its mechanical properties and biocompatibility. However, FFF of PEEK is challenging due to its high melting point and tendency to warp. This study investigates the influence of key FFF parameters on porous PEEK specimen properties. A face-centered central composite design (FCCCD) was used to vary nozzle temperature (380–400&#xa0;°C), layer height (0.20–0.40&#xa0;mm), material flow (0.85–1.15), and printing speed (25–40&#xa0;mm/s). Printability (qualitative), pore size, and interlayer adhesion (quantified via short-beam strength, <i>F</i><sup><i>sbs</i></sup>) were evaluated. Response surface methodology (RSM) and analysis of variance (ANOVA) analyzed parameter-property relationships. Optimized FFF settings (nozzle temperature: 390&#xa0;°C, layer height: 0.30&#xa0;mm, material flow: 1.0, printing speed: 30&#xa0;mm/s) achieved an <i>F</i><sup><i>sbs</i></sup>&#xa0;of 3.59&#xa0;MPa and a 221&#xa0;μm average pore size. Statistical analysis accurately predicted pore size but showed limitations in predicting <i>F</i><sup><i>sbs</i></sup>. All samples failed via interlayer crack propagation, highlighting that interlayer adhesion is governed by complex interactions between material flow, printing speed, and a quadratic effect of nozzle temperature. This research provides crucial insights into optimizing FFF parameters for PEEK, emphasizing the critical role of interlayer bonding to advance the fabrication of high-performance, porous PEEK 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

Qualitative and quantitative analysis of FFF- printed porous PEEK: effects of key process parameters

  • 期刊论文

  • 发表日期：

    2025年8月4日

查看全文
  • Diana Micare Ramírez-López,
  • José Bonilla-Cruz,
  • Tania E. Lara-Ceniceros,
  • Graciela Morales,
  • José Manuel Cervantes-Uc,
  • Alejandro May-Pat,
  • Katia Dafne Daniela Martínez-López,
  • José de Jesús Kú-Herrera

摘要

Fused filament fabrication (FFF) presents a viable method for creating complex porous structures from high-performance polymers like poly(ether-ether-ketone) (PEEK), desirable for medical and aerospace applications due to its mechanical properties and biocompatibility. However, FFF of PEEK is challenging due to its high melting point and tendency to warp. This study investigates the influence of key FFF parameters on porous PEEK specimen properties. A face-centered central composite design (FCCCD) was used to vary nozzle temperature (380–400 °C), layer height (0.20–0.40 mm), material flow (0.85–1.15), and printing speed (25–40 mm/s). Printability (qualitative), pore size, and interlayer adhesion (quantified via short-beam strength, Fsbs) were evaluated. Response surface methodology (RSM) and analysis of variance (ANOVA) analyzed parameter-property relationships. Optimized FFF settings (nozzle temperature: 390 °C, layer height: 0.30 mm, material flow: 1.0, printing speed: 30 mm/s) achieved an Fsbs of 3.59 MPa and a 221 μm average pore size. Statistical analysis accurately predicted pore size but showed limitations in predicting Fsbs. All samples failed via interlayer crack propagation, highlighting that interlayer adhesion is governed by complex interactions between material flow, printing speed, and a quadratic effect of nozzle temperature. This research provides crucial insights into optimizing FFF parameters for PEEK, emphasizing the critical role of interlayer bonding to advance the fabrication of high-performance, porous PEEK components.