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通过粉末床融合工艺制造的多层多孔聚 (乙-乙-) 结构

Yaan Liu¹, Richard Davies¹, Nan Yi¹

¹Engineering, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom.

3D printing and additive manufacturing

|February 23, 2024

概括

这项研究开发了高度多孔的聚 (--) (PEEK) 结构,使用盐作为原体. 由此产生的PEEK材料在各种应用中保持出色的机械性能.

科学领域:

材料科学材料科学材料科学
聚合物工程聚合物工程
增材制造增材制造增材制造

背景情况:

聚 (乙-乙) (PEEK) 是一种高性能热塑性塑料.
创建高度多孔的PEEK结构往往会损害机械完整性.
需要先进的制造技术来生产功能性多孔PEEK.

研究的目的:

为了制造多尺度,高度多孔的PEEK结构.
为了保持多孔PEEK的机械性能.
探索这些新PEEK结构的应用.

主要方法:

使用盐 (70重量%) 作为一个与PEEK粉末干混合物中的原体.
用于烧结的粉末床化 (PBF).
使用扫描电子显微镜 (SEM),微计算机断层扫描 (micro-CT) 和机械测试来描述结构.

主要成果:

在PEEK结构中达到79-86%的多孔性,含有70%重量%的盐.
获得了4.1MPa的压力承压强度和~60%的承压应变.
通过优化能量密度 (ED),在不损害结构完整性的情况下制造出多孔PEEK.

结论:

盐方法有效地创造了高度多孔的PEEK框架.
机械性能受到打印方向,粒子凝聚和孔隙性的影响.
多孔PEEK在组织工程,过,催化,药物输送和气体储存方面显示出潜力.

关键词:

通过3D打印打印3D打印.添加剂制造添加剂制造添加剂制造有孔的PEEK结构是多孔的PEEK结构粉末床核聚变是指一个粉末床.

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