在微观结构的形成中使用PVC塑料的动态机械性质与新型磁力约束器
Justas Ciganas1, Algimantas Bubulis2, Vytautas Jurenas2
1Department of Mechanical Engineering, Kaunas University of Technology, Studentu 56, LT-51424 Kaunas, Lithuania.
Micromachines
|July 8, 2023
概括
超声波热印可以创建高精度的聚合物微结构. 这项研究优化了使用动态机械分析数据进行增强的微观结构模拟的过程,并确定了优越成型质量的最佳条件.
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
- 机械工程 机械工程
背景情况:
- 超声波热印为热塑性聚合物成型提供了高精度和可重复性.
- 了解动态负载条件对于分析聚合物微结构形成至关重要.
- 标准线性固体 (SLS) 模型虽然有用,但在表示具有多个放松行为的材料方面存在局限性.
研究的目的:
- 为更广泛的周期变形推断动态机械分析 (DMA) 数据.
- 利用DMA数据进行高分子微结构形成的先进模拟.
- 为了确定微观结构的超声波热印的最佳参数.
主要方法:
- 动态机械分析 (DMA) 用于材料属性表征.
- 对DMA数据进行外推,用于广泛的循环变形分析.
- 使用获得的粘弹性数据进行微结构形成模拟.
- 实验复制使用一种新型磁力压缩器设计,可控制温度和振动频率.
- 通过射效率测量分析微观结构质量.
主要成果:
- 确定了最佳成型条件:68°C,10kHz频率,1.5μm频率幅度和1kN力.
- 在这些优化的参数下,高质量的聚合物微结构成功形成.
- 开发的方法证明了在任何厚度的塑料上成型结构的适用性.
结论:
- 动态机械分析数据可以有效地推断并应用于微观结构形成模拟.
- 这种新型的磁力压缩器设计可以精确控制超声波热印参数.
- 优化的超声波热印参数导致各种塑料厚度的高质量,可重复的聚合物微结构.
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