Abstract
Nanoindentation is a widely used method for measuring the micromechanical properties of thin films and micro scale materials. Self-healing polymeric materials have the built-in capability to substantially recover their load transferring ability after damage. One of the main self-healing strategies incorporates microencapsulated healing agents within a polymer matrix to produce a polymer composite capable of self-healing. In this study, microcapsules containing, respectively, epoxy (resin) and mercaptan (hardener) were investigated with poly (melamine-formaldehyde) (PMF) as the shell material. The micromechanical behavior of microcapsules was tested using nanoindentation. The results show that the PMF shell material behaves as a viscoelastic plastic material. The modulus and hardness of the microcapsules were determined quantitatively. The size and loaded-component of microcapsules (i.e., hardener or resin) have a significant effect on the micromechanical properties of the microcapsules.
Original language | English |
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Pages (from-to) | 62-65 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 76 |
DOIs | |
Publication status | Published - 1 Jun 2012 |
Externally published | Yes |
Keywords
- Biomimetic
- Elastic properties
- Functional
- Indentation
- Polymers
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering