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Self-healing materials Multidisciplinary project group 2.

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Presentation on theme: "Self-healing materials Multidisciplinary project group 2."— Presentation transcript:

1 Self-healing materials Multidisciplinary project group 2

2 Self-healing materials 1.Introduction 2.Concepts: Encapsulated healing agent Remendable cross-links Interdiffusion Biomimetic approach 3.Opportunities 4.How to continue

3 Introduction Is it feasible to create a self-healing material? Application?

4 Self-healing materials 1.Introduction 2.Concepts: Encapsulated healing agent Remendable cross-links Interdiffusion Biomimetic approach 3.Opportunities 4.How to continue

5 Concepts: Encapsulation Autonomic healing  After reaction it is over

6 Concepts: Remendable cross-links Diels Alder U-py Metal Complex Combinations

7 Concepts: Remendable cross-links Diels Alder U-py Metal Complex Combinations

8 Concepts: Remendable cross-links Diels Alder U-py Metal Complex Combinations

9 Concepts: Remendable cross-links Diels Alder U-py Metal Complex Combinations Multiple healing Possibilities  Not autonomically

10 Concepts: Interdiffusion  Only amorphous polymer  Competition between interdiffusion and crosslink  Very slow

11 Biomimetic approach Autonomic healing  It’s over when fibre breaks

12 Biomimetic approach Controlled release of growth-factors  Hydrogel instead of microcapsules Site specific  How to detect a crack?

13 Self-healing materials 1.Introduction 2.Concepts: Encapsulated healing agent Remendable cross-links Interdiffusion Biomimetic approach 3.Opportunities 4.How to continue

14 Opportunities Microcapsules: finetuning Interdiffusion: Low T g Polymers Biomimetic: Unbreakable porous hollow fibres. Remendable Crosslinks: Dye a U-pyDye a U-py

15 Self-healing materials 1.Introduction 2.Concepts: Encapsulated healing agent Remendable cross-links Interdiffusion Biomimetic approach 3.Opportunities 4.How to continue

16 Focus: Cross-links with dyes Detection systems

17 Why Dye? Present research: a fluorescent dye on U-py Our idea: Energy dissipating dye! Also possible for Diels-Alder crosslinks

18 Detection Microcapsules detect – repair – capsule broken  Crosslinks repair – repair again Weakest point multiple-healing-systems: no detection

19 Piezo elements

20 Questions?

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