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直接颗粒三维打印聚乙烯基基合甲基酸盐为更绿色的未来
Armin Karimi1,2, Davood Rahmatabadi1, Mostafa Baghani1
1School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran P.O. Box 11155-9567, Iran.
Polymers
|January 23, 2024
概括
使用更高的喷嘴温度直接3D打印可生物降解的聚丁烯基合甲基 (PBAT),可以提高机械性能和打印质量. 在200°C的最佳印刷可以提高具有更高填充密度的结构的抗拉强度和压力强度.
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
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 传统的塑料有助于石油消耗和污染.
- 可生物降解的塑料提供了可持续的替代品.
- 由于其特性,聚丁烯基酸盐-联合甲酸盐 (PBAT) 是一个有前途的产品.
研究的目的:
- 调查PBAT的直接颗粒打印.
- 确定最佳的打印温度,以提高性能.
- 评估3D打印PBAT的机械性能和微观结构.
主要方法:
- 在不同的喷嘴温度下3D打印PBAT拉伸样本.
- 机械性能测试 (拉力,压力强度).
- 动态机械热分析 (DMTA) 和扫描电子显微镜 (SEM).
主要成果:
- PBAT的玻璃-过渡温度大约为-25°C.
- 更高的喷嘴温度 (高达200°C) 显著改善了拉伸强度 (7.5MPa) 和延伸 (1379%).
- 60%的灌装密度结构显示出优越的压力强度 (1338 KPa) 和能量吸收.
结论:
- 直接颗粒打印PBAT是可行的和有利的.
- 优化喷嘴温度对于最大限度地提高PBAT的机械性能至关重要.
- 增加填充密度可以提高结构完整性和能量吸收能力.
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