应变速率和热暴露对通过选择性激光烧结处理的聚胺 (PA12) 的影响
Chiara Morano1, Marco Alfano2, Leonardo Pagnotta1
1Department of Mechanical, Energy and Management Engineering, University of Calabria, 87036 Rende, Italy.
Materials (Basel, Switzerland)
|July 14, 2023
概括
这项研究研究了排位率和热量如何影响3D打印聚胺 (PA12) 的机械性能. 选择性激光烧结 (SLS) 生产的零件,揭示了速率依赖性和加工后热处理对性能的部分影响.
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
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 聚合物为运输行业提供轻量化解决方案,减少排放.
- 增材制造 (AM) 能够实现传统方法无法实现的复杂几何形状.
- 了解3D打印聚合物机械性能对于产品的性能和耐用性至关重要.
研究的目的:
- 调查排位速度和热暴露对3D打印聚胺12 (PA12) 的机械特性的影响.
- 为了评估PA12粉末和烧结材料的热性能.
- 为了比较3D打印的PA12与其散装对应物的特性.
主要方法:
- 选择性激光烧结 (SLS) 用于制造PA12标本.
- 机械测试在各种位移速度下进行.
- 使用差分扫描热量计 (DSC) 来分析热性质.
- 对一些标本进行了加工后热处理.
主要成果:
- 3D打印的PA12的机械性能表现出预期的速度依赖.
- 处理后的热处理表明对机械行为的部分影响.
- DSC分析为材料的热特性提供了洞察力.
结论:
- 这项研究证实了3D打印PA12的机械性质的速度依赖性.
- 后处理热处理可以修改,但不会完全改变机械性能.
- 需要进一步的研究才能充分理解影响机械性能的微观结构变化.
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