通过使用超分支预聚合物的使用,提高了2PP增材制造的构建/工艺质量
Andrea A Konta1, Michelle Duong2, Joseph Sefton1,2
1Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK. derek.irvine@nottingham.ac.uk.
Faraday discussions
|September 25, 2025
概括
超分支 (HB) 聚合物通过实现更快的速度和更广泛的打印条件来增强双光子聚合 (2PP) 增材制造. 这些新型材料改善了高级2PP应用的树脂混合和加工窗口.
科学领域:
- 聚合物化学 聚合物化学
- 添加剂制造 添加剂制造 添加剂制造
- 材料科学 材料科学 材料科学
背景情况:
- 双光子聚合 (2PP) 是一种高分辨率的3D打印技术.
- 目前的2PP树脂在加工条件和材料功能方面存在限制.
- 需要新的聚合物架构来克服这些局限性.
研究的目的:
- 研究高分支 (HB) 聚合物作为改进2PP树脂的添加剂.
- 评估HB聚合物对印刷速度,分辨率和材料性能的影响.
- 了解2PP中的HB聚合物的聚合和脱聚合行为.
主要方法:
- 添加剂制造树脂的配方,其中包括HB聚合物.
- 使用2PP制造单重和多重材料结构.
- 使用飞行时间二次离子质谱法 (ToF-SIMS) 和拉曼光谱法对印刷材料进行表征.
- 对HB聚合物的降解研究.
主要成果:
- 含有HB聚合物的树脂可以打印多材料结构,并改善混合.
- 与单体树脂相比,实现了更广泛的打印条件,更高的固化水平和更快的加工速度.
- HB聚合物改善了聚合起始和燃烧值,延长了加工窗口.
- 降解研究显示,HB聚合物产生更多的"char",有助于在2PP"燃烧"中脱色.
结论:
- HB聚合物是有效的新材料,用于增强2PP加工.
- 它们提高了树脂配方,印刷多功能性和材料性能.
- 了解HB聚合物的反应性是优化2PP应用的关键.
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