Self healing polymer technology
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This document discusses self-healing polymer technology. It describes intrinsic self-healing polymers that can heal cracks through physical or chemical interactions within the polymers themselves, and extrinsic self-healing polymers that require a pre-embedded healing agent. The document outlines advantages like improved material performance and safety, and challenges like storing the healing agent and initiator. Applications discussed include medical replacements, aerospace, military, car painting and civil constructions.
Self healing polymer technology
- 1. SELF-HEALING POLYMER TECHNOLOGY Under the guidance of Dr. A. R. Chavan by Sayali Chaudhary 3rd year Chemical Engineering
- 2. Contents 1. Introduction 2. Types of self-healing materials 3. Self-Healing man-made structures 4. Classification 5. Intrinsic Self-healing polymers 6. Extrinsic Self-healing polymers 7. Advantages 8. Challenges 9. Applications
- 3. Introduction Damage induced by factors such as mechanical, chemical, thermal, UV radiation Need for improvement in material performance Bioinspired material systems
- 4. Types of Self-healing materials 1. Plastics/Polymers 2. Paints/Coatings 3. Metals 4. Ceramic/Concrete
- 5. Self-Healing man-made structures A resin & a hardener : depends on the extent of their mixing A resin & a catalyst : chemical reactions spread at the damaged site
- 6. Classification Intrinsic Self-Healing polymers : able to heal cracks by the polymers themselves. Extrinsic Self-Healing polymers : healing agent has to be pre embedded
- 7. Intrinsic Self-Healing Polymers Two modes are : 1) Physical interactions : based on surface rearrangements and crack healing. 2) Chemical interactions : based on structural changes in atoms or molecules and nanoscopic repairing.
- 8. Extrinsic Self-Healing Polymers Healing loaded pipelines 1) Hollow glass fibers or glass tubes 2) Three dimensional micro-vascular network Healing loaded microcapsules
- 9. Advantages Improving product safety Improved stiffness Reduced waste disposal Building sustainable society
- 10. Challenges Storage of healing agent and initiator Initiation of healing Stability of healing agent
- 11. Applications Low-cost sensitive applications 1) Medical replacements 2) Aerospace 3) Military High-cost sensitive applications 1) Car painting 2) Civil constructions
- 12. Thank you…