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…