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一个临时的3D打印树脂的微观结构,光学特性和机械行为的表征:3D打印树脂:固化后时间的影响
Joyce Roma Correia Dos Santos Siqueira1, Rita Maria Morejon Rodriguez1, Tiago Moreira Bastos Campos2
1Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos 12245-000, Brazil.
Materials (Basel, Switzerland)
|April 13, 2024
概括
固化后1小时的时间优化了Resilab Temp的机械性能,3D打印聚合物复合材料. 这提高了3D打印牙科设备的屈曲强度.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 聚合物化学 聚合物化学
背景情况:
- 基于聚合物的临时复合材料对于牙科3D打印至关重要.
- 优化后固化参数对于实现所需的材料性能至关重要.
- 了解固化后时间和材料性能之间的关系对于临床应用至关重要.
研究的目的:
- 描述临时3D打印聚合物复合材料 (Resilab Temp) 的微观结构,光学特性和机械行为.
- 评估不同后固化时间对这些特性的影响.
- 为了确定最佳的固化后持续时间,以提高机械性能.
主要方法:
- 使用W3D打印机3D打印聚合物复合样品 (Resilab Temp) 的方法.
- 样品的后固化时间不同 (0,16,32,60分钟).
- 通过富里埃变换红外光谱 (FT-IR) 和扫描电子显微镜 (SEM) 进行结构分析.
- 机械测试包括屈曲强度和Knoop微硬度.
- 使用光谱光度计进行光学属性评估 (颜色和半透明度).
- 在两千个周期 (5-55°C) 的时间内进行热老化.
主要成果:
- 福利埃变换红外光谱法 (FT-IR) 表示表面转换程度约为46%和中心的37%.
- 柔性强度在32分钟和1小时后治愈的样品中显著更高.
- 诺普的微硬度,颜色和半透明度在治愈后组之间没有统计学上显著的差异.
- 热老化并没有显著改变测试的特性.
结论:
- 建议使用1小时的后聚合时间来增强由Resilab Temp.制成的3D打印设备的柔性强度.
- 虽然微硬度和光学特性没有受到显著影响,但优化后固化时间对于机械完整性至关重要.
- 进一步的研究可能会探索更长的固化后持续时间或替代固化方法,以进一步提高材料性能.
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