Self-healing materials

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Self-healing materials

• Multidisciplinary project group 2

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Self-healing materials

• Introduction
• Concepts
• Encapsulated healing agent
• Remendable cross-links
• Interdiffusion
• Biomimetic approach
• Opportunities
• How to continue

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Introduction

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

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Self-healing materials

• Introduction
• Concepts
• Encapsulated healing agent
• Remendable cross-links
• Interdiffusion
• Biomimetic approach
• Opportunities
• How to continue

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Concepts Encapsulation
? Autonomic healing
? After reaction it is over
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Concepts Remendable cross-links

• Diels Alder
• U-py
• Metal Complex
• Combinations

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Concepts Remendable cross-links

• Diels Alder
• U-py
• Metal Complex
• Combinations

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Concepts Remendable cross-links

• Diels Alder
• U-py
• Metal Complex
• Combinations

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Concepts Remendable cross-links

• Diels Alder
• U-py
• Metal Complex
• Combinations

• Multiple healing
• Possibilities
• ? Not autonomically

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Concepts Interdiffusion
? Only amorphous polymer ? Competition between
interdiffusion and crosslink ? Very slow
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Biomimetic approach
? Autonomic healing
? Its over when fibre breaks
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Biomimetic approach

• Controlled release of growth-factors
• ? Hydrogel instead of microcapsules

? Site specific ? How to detect a crack?
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Self-healing materials

• Introduction
• Concepts
• Encapsulated healing agent
• Remendable cross-links
• Interdiffusion
• Biomimetic approach
• Opportunities
• How to continue

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Opportunities

• Microcapsules finetuning
• Interdiffusion Low Tg Polymers
• Biomimetic Unbreakable porous hollow fibres.
• Remendable Crosslinks Dye a U-py

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Self-healing materials

• Introduction
• Concepts
• Encapsulated healing agent
• Remendable cross-links
• Interdiffusion
• Biomimetic approach
• Opportunities
• How to continue

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Focus

• Cross-links with dyes
• Detection systems

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Why Dye?

• Present research a fluorescent dye on U-py
• Our idea Energy dissipating dye!
• Also possible for Diels-Alder crosslinks

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Detection
Microcapsules detect repair capsule broken
Crosslinks repair repair again
?
Weakest point multiple-healing-systems no
detection
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Piezo elements
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Questions?