用氧化增强的聚氨复合材料的机械性能和耐老分析
Chien-Chiang Tung1, Yen-Hong Lin2, Yi-Wen Chen2,3,4
1Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taipei 10607 Taiwan mccabe@mail.ntust.edu.tw.
RSC advances
|August 27, 2025
概括
这项研究开发了3D打印的聚氨复合材料与氧化纳米颗粒,以提高耐用性. 这些新材料具有更好的机械强度和抗紫外线和热衰老能力,使其适用于苛刻的应用.
科学领域:
- 材料科学
- 聚合物化学
- 纳米技术
背景情况:
- 聚氨 (PU) 复合材料经常面临机械完整性和环境退化方面的挑战,限制其在恶劣条件下使用.
- 表面功能化和纳米粒子强化是克服这些局限性的关键策略.
研究的目的:
- 用氧化物 (ZnO) 纳米粒子增强的3D打印聚氨 (PU) 复合材料的开发.
- 提高PU支架的机械性能和环境耐用性,防止紫外线暴露和热老化.
- 调查西兰合剂 (3- ((trimethoxysilyl) propyl methacrylate - TMSPM) 在提高纳米粒子分散和界面兼容性的作用.
主要方法:
- 使用数字光处理 (DLP) 技术制造多孔PU支架.
- 包含不同度 (0,1,2重%) 的表面功能化ZnO纳米颗粒.
- 机械性能 (压力强度) 和环境耐用性 (紫外线和热老化) 的评估.
- 使用接触角度测量和微观结构检查进行表面分析.
主要成果:
- 用TMSPM修改的ZnO纳米粒子改善了PU矩阵中的分散性和界面兼容性.
- 与对照组相比,用ZnO增强的支架的压力强度高达53%.
- 在150小时的紫外线和热衰老后,脚手架保持了超过75%的机械性能.
- 加入ZnO减轻了表面裂纹和分层,保持了结构完整性.
结论:
- 功能化的ZnO纳米粒子显著提高了3D打印PU的机械强度和耐老性.
- 的协同效应作为紫外线吸收器和物理屏障,提高材料的寿命.
- 这些PU/TMSPM-ZnO纳米复合材料为各种行业的耐用轻质元件提供了有前途的解决方案.
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