| 姚嘉琦,王琨,王正直*.综述：聚合收缩与收缩应力测试方法研究进展[J].实验力学,2023,38(4):435~445 |
| 综述：聚合收缩与收缩应力测试方法研究进展 |
| Review: recent progress in the testing methods for polymerization shrinkage and shrinkage stress |
| 投稿时间：2022-11-03 修订日期：2022-12-08 |
| DOI：10.7520/1001-4888-22-273 |
| 中文关键词: 光聚合反应 聚合收缩 收缩应力 测量方法 |
| 英文关键词:photopolymerization polymerization shrinkage shrinkage stress testing methods |
| 基金项目:国家自然科学基金(12272276， 11972264)；广东省自然科学基金(2021A1515010237) |
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| 中文摘要: |
| 光聚合是材料固化和加工的一种常见方式，其凭借反应迅速、时间空间可控、经济环保等优点，在工业生产领域有着广泛的应用。然而，在实际使用中，材料的本征聚合收缩受到周围刚性基质的约束，在材料内部以及材料与基质交界面处会产生不利的聚合收缩应力，从而严重影响材料的使用寿命。因此，如何准确测量材料的本征聚合收缩及受约束下的收缩应力，实现对聚合收缩应力的主动控制，是提高光聚合材料服役质量和寿命的关键所在。本文首先介绍了材料聚合收缩与收缩应力产生和发展的机理；然后详细综述了国内外聚合收缩与收缩应力的测量方法，并重点介绍了集悬臂梁、近红外光谱和热电偶于一体的光聚合动态多参量耦合测试平台，利用该平台可以实现对聚合收缩、收缩应力和温度的简便一体化测量；最后对改善聚合收缩与收缩应力的测试方法进行展望，以便为相关的理论研究和实验设计提供参考。 |
| 英文摘要: |
| Photopolymerization is a common technique to solidify and process material. It has been widely used in industrial applications due to its advantages of rapid response, economy, and environmental friendliness. In practice, polymerization shrinkage is influenced by external constraints, resulting in considerable residual stress at the material/matrix interface, which seriously affects the performance of the material. Therefore, accurate measurement of the polymerization shrinkage and shrinkage stress is critical to improving the service quality and lifetime of photopolymerized materials. This review describes the mechanism of polymerization shrinkage and shrinkage stress and presents domestic and international methods for measuring polymerization shrinkage and shrinkage stress in detail. A dynamic multiparameter coupled test platform integrated with the cantilever beam/NIR spectroscopy/thermocouple for photopolymerization is introduced emphatically, which can realize a simple and unified measurement of polymerization shrinkage, shrinkage stress, and temperature. Finally, an outlook on improved testing methods for polymerization shrinkage and shrinkage stress is provided and gives guidance for relevant theoretical studies and experimental design. |
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