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结晶性对聚乙烯二甲) /聚乙烯二甲) 混合物的可打印性的影响

Francesca Aliberti¹, Maria Oliviero², Raffaele Longo¹

¹Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.

|January 25, 2025

概括

将聚乙烯二甲 (PET) 与聚乙烯二甲 (PBT) 混合,可以提高热稳定性和3D打印能力. 这种PET-PBT混合物为3D打印应用提供了更好的维度稳定性和精度.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
增材制造增材制造增材制造

背景情况:

聚乙烯二甲 (PET) 和聚乙烯二甲 (PBT) 是广泛使用的聚合物.
了解它们的混合物特性对于先进的材料应用至关重要.
优化聚合物混合物可以在3D打印中提高性能.

研究的目的:

研究混合PET与PBT对材料性能的影响.
分析PET-PBT混合物的热,结构和机械特性.
评估这些混合物对于3D打印的适用性.

主要方法:

里埃变换红外光谱 (FT-IR) 用于化学相互作用分析.
热重力测量分析 (TGA) 和差分扫描热量测量 (DSC) 用于测量热性能.
用X射线衍射 (XRD) 进行结构和结晶性评估.
机械测试,以确定拉伸性能和柔性.

主要成果:

FT-IR证实了没有转化的物理混合.
增加的PET含量提高了热稳定性.
XRD显示分离结晶,整体结晶度降低超过50%的PET.
PET减缓了PBT结晶动力学,促进了冷结晶.
机械性能显示,在更高的PET含量下,硬度增加 (在破裂时减轻应变).

结论:

聚乙烯-PBT混合物表现出更好的热稳定性和可打印性.
混合物显示了增强的维度稳定性和减少3D打印中的曲面.
这些修改后的PET-PBT材料对苛刻的3D打印应用具有前景.

关键词:

在PETPBT混合物中使用PETPBT.添加剂制造添加剂制造添加剂制造结晶性结晶性是指结晶性.维度稳定性的维度稳定性

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