开发用于增材制造的阻燃性多乳酸配方
Robert Aguirresarobe1, Itxaso Calafel1, Sara Villanueva2
1POLYMAT and Department of Advanced Polymers and Materials: Physics, Chemistry and Technology, Faculty of Chemistry, Universidad del País Vasco/Euskal Herriko Unibertsitatea, UPV/EHU, 20018 San Sebastian, Spain.
Polymers
|April 27, 2024
概括
这项研究探讨了用于铁路应用的3D打印的聚乳酸 (PLA) 与阻燃剂. 聚酸 (APP) 提供了耐火性和机械性能的最佳平衡,符合EN 45545-2标准.
科学领域:
- 材料科学 材料科学 材料科学
- 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
背景情况:
- 聚合物材料为铁路车辆提供轻量化,设计灵活的解决方案,提高燃油效率和成本效益.
- 增材制造 (三维打印) 允许量身定制的聚合物化合物配方在铁路应用中扩大使用.
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,正在研究其在铁路组件中的潜力.
研究的目的:
- 评估聚乳酸 (PLA) 化合物与无素阻燃剂 (FRs) 的可打印性和防火性能.
- 根据欧洲铁路标准EN 45545-2对配方进行评估.
- 为了确定3D打印PLA在铁路应用中的耐火性和机械性能之间的最佳平衡.
主要方法:
- 聚乳酸 (PLA) 与各种无素阻燃剂 (FRs) 的配方,包括聚酸盐 (APP),可扩展石墨 (EG) 和氧化 (ATH).
- 开发的PLA化合物的可打印性和防火性能特征的评估.
- 对聚合物分子量和与阻燃剂添加剂相关的机械性能进行评估.
主要成果:
- 凝结相阻燃剂,如聚酸盐 (APP),可扩展石墨 (EG) 和浸系统,显示出优越的防火性能.
- 诱导水解降解 (ATH,EG) 的阻燃剂降低了PLA的分子量,对机械性能产生了负面影响.
- 使用氨基聚酸 (APP) 作为阻燃剂的PLA配方实现了耐火性和机械完整性之间的最佳妥协.
结论:
- 有特定阻燃剂的优化PLA化合物可以满足严格的铁路消防安全标准 (EN 45545-2).
- 聚酸盐 (APP) 被确定为铁路应用中3D打印的PLA的高效阻燃剂.
- 这项研究为铁路行业采用先进的3D打印聚合物材料提供了关键数据.
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