A chemo-mechanically coupled model for capsule-based self-healing polymer materials

被引:7
作者
Tian, Fang [1 ]
Zhong, Zheng [1 ,2 ]
Pan, Yihui [1 ]
机构
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai, Peoples R China
[2] Harbin Inst Technol, Sch Sci, Shenzhen, Peoples R China
基金
中国国家自然科学基金;
关键词
Self-healing; chemo-mechanics; elasto-plastic deformation; damage-healing model; chemical reaction; FIBER-REINFORCED COMPOSITES; MICROCRACK-INDUCED DAMAGE; CONTINUUM DAMAGE; CEMENTITIOUS COMPOSITES; 2-PARAMETER DAMAGE; REPAIR;
D O I
10.1177/1056789518812979
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, a chemo-mechanically coupled model for capsule-based self-healing polymer materials has been proposed within a thermodynamic consistent framework. Elasto-plastic deformation, mechanical deterioration due to plastic damage and recovery resulting from the release of healing agents are all considered. By introducing a variable representing the extent of chemical reaction associated with healing agents, we are able to describe the healing behavior of self-healing materials from chemical kinetics. The Helmholtz free energy function and the evolution equations for the damage and the healing processes are specified. The proposed model offers a novel viewpoint to the establishment of damage-healing models by incorporating chemo-mechanical couplings. Taking the dicyclopentadiene-filled microcapsules and Grubbs' catalyst-embedded self-healing epoxy matrix composite as an example, we discuss the effects of temperature, loading conditions, and initial damage on the evolution of damage-healing and the mechanical performance of self-healing materials.
引用
收藏
页码:1075 / 1094
页数:20
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