| 赵钊,计宏伟*,陈金龙,张晓川.自修复体系中微胶囊壁材力学性能的测试与表征[J].实验力学,2013,28(5):580~585 |
| 自修复体系中微胶囊壁材力学性能的测试与表征 |
| Mechanical Properties Testing and Characterization of Microcapsule Wall Material in a Self-healing System |
| 投稿时间：2013-03-21 修订日期：2013-05-30 |
| DOI：10.7520/1001-4888-13-040 |
| 中文关键词: 微胶囊壁材 纳米压痕测试 P-h曲线 应力-应变本构关系 弹性模量 |
| 英文关键词:Microcapsule wall material nano-indentation testing P-h curve stress-strain constitutive relation elastic modulus |
| 基金项目:国家自然科学基金资助项目(11072176) |
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| 中文摘要: |
| 微胶囊自修复技术成为研发自修复聚合物材料的主要途径。由于尺寸效应的影响和制备工艺的差异，有必要表征和测量自修复体系中微胶囊壁材的力学性能。本文从微胶囊中直接剥离出微胶囊壁试样进行纳米压痕测试，通过数据拟合和和量纲分析的方法，建立载荷-位移(P-h)曲线与微胶囊壁材弹塑性力学参数之间的联系，分析得到了微胶囊壁材的弹性模量和特征应力值(σ0.033)，进而得到微胶囊壁材的应力-应变本构关系。 |
| 英文摘要: |
| Microcapsule self-healing technology became a main way for developing self-healing polymeric materials. It is necessary to characterize and measure the mechanical properties of microcapsule wall material in a self-healing system, due to the size effect and the difference in preparation. In this paper, microcapsule wall specimens which are stripped out directly from capsules are used for nano-indentation testing. The load-depth (P-h) curve was obtained through loading and unloading. The relation between P-h curve and elasto-plastic mechanical parameters of capsules wall material was established by using data fitting and dimensional analysis. Then elastic modulus and characteristic stress value (σ0.033) of the capsule wall material can be obtained, further, the stress-strain constitutive relations of microcapsule wall material was constructed. |
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