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新型低晶度聚乙基共聚合物用于3D打印

Azamat Zhansitov¹, Zhanna Kurdanova¹, Kamila Shakhmurzova¹

¹Center for Progressive Materials and Additive Technologies, Kabardino-Balkarian State University Named After H.M. Berbekov, 360004 Nalchik, Russia.

|March 14, 2026

概括

合成聚乙乙基 (PEEK) 共聚物与4,4'-二二硫 (DCDPS) 改进了FDM打印. 优化的DCDPS内容平衡了高质量的PEEK零件的可加工性和机械性能.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
增材制造增材制造增材制造

背景情况:

聚乙基 (PEEK) 是一种具有优异机械和化学性能的高性能热塑性塑料.
在增材制造 (AM) 中提高PEEK零件的加工能力和质量仍然是一个关键的挑战.

研究的目的:

为了合成具有不同4,4'-二二硫 (DCDPS) 含量的PEEK共聚物.
研究DCDPS对热物理性质和机械性能的影响.
为了优化PEEK共聚合物用于沉积建模 (FDM) 打印.

主要方法:

合成具有受控DCDPS含量的PEEK共聚合物.
差分扫描热度计 (DSC) 用于分析热性质 (Tm,Tc,Tg,晶度).
拉力测试用于评估机械性能 (强度,弹性模量).
FDM打印试验以评估可加工性和零件质量.

主要成果:

增加DCDPS含量降低了化温度 (Tm),结晶温度 (Tc) 和结晶度.
玻璃过渡温度 (Tg) 随着DCDPS含量增加而增加.
结构性无形化导致强度和弹性模量下降,除了15%的DCDPS,链条刚性增加.
含有5-20%DCDPS的PEEK共聚合物使得FDM印刷能够稳定地进行,无需变形或分层.

结论:

在PEEK共聚合物中量身定制DCDPS含量,可以微调热物理和机械性能.
15%的DCDPS度提供了最佳的平衡,增强链条刚性以抵消无形化效应.
含有5-20%DCDPS的PEEK共聚合物适用于FDM打印,确保高质量的零件具有更好的加工能力和性能.

关键词:

通过3D打印打印3D打印.4,4′-二二二硫二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二聚合物的共聚物.结晶化结晶化的过程.机械性能机械性能机械性能聚凝聚是一种多重凝聚方式.聚乙基是一种聚乙基.

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