3D打印玻璃纤维增强聚乙烯复合材料的增强机械性能
Jan Sezemský1, Gregor Primc2, Taťana Vacková1
1Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, 160 00 Prague, Czech Republic.
Polymers
|May 14, 2025
概括
聚合物粉末的等离子处理显著提高了3D打印复合材料的抗拉强度. 优化处理时间可以改善机械性能,通过组合矩阵和纤维修改,产生最大的强度增加.
科学领域:
- 材料科学 材料科学 材料科学
- 添加剂制造 添加剂制造 添加剂制造
- 聚合物化学 聚合物化学
背景情况:
- 提高3D打印聚合物复合材料的机械性能对于广泛采用至关重要.
- 聚合物和填料之间的表面能量不匹配限制了复合材料的性能.
研究的目的:
- 为了优化3D打印的线性低密度聚乙烯玻璃纤维复合材料的抗拉强度.
- 研究等离子处理对聚合物粉末的影响及其对复合材料机械性能的影响.
主要方法:
- 复合纤维从整洁和氧等离子体处理的聚合物粉末中挤出.
- 血治疗涉及脉冲微波放电与不同的治疗时间 (长达30分钟).
- 测试了3D打印复合材料的拉伸和屈曲强度.
主要成果:
- 在高达10分钟的时间内对聚合物粉进行等离子处理,逐渐改善了拉伸和曲强度.
- 复合材料的拉伸强度增加了三分之一,这些复合材料来自于用等离子体处理的聚合物粉末.
- 将血修饰矩阵与西兰大小的玻璃纤维结合起来,使复合材料的强度翻了一番.
结论:
- 等离子处理使聚合物粉末具有极性群的功能,增加表面能量并改善矩阵填充剂粘附.
- 优化等离子治疗是有效提高3D打印复合材料的机械性能.
- 修改矩阵和大小纤维之间的协同效应提供了显著的强度改善.
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