Self-healing materials Multidisciplinary project group 2.

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Presentation transcript:

Self-healing materials Multidisciplinary project group 2

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

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

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

Concepts: Encapsulation Autonomic healing  After reaction it is over

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

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

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

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

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

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

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

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

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

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

Focus: Cross-links with dyes Detection systems

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

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

Piezo elements

Questions?