Advanced Materials, Sustainable Environment
Sustainable, Self-Healing Coatings
Inventors: Dr. Marek Urban
Keywords: Sustainable, Self-Healing Materials, Coatings
Market Overview
This self-healing polymer coating inhibits corrosion of metal iron substrates while extending the life of coated materials. Self-healing materials are an emerging and promising market, expected to reach a market value of $2.7 billion by 2020. The concept of self-healing materials is to enable materials to repair damage with minimum intervention. Current approaches to achieving self-healing materials are based on encapsulating self-healing agents, which is an expensive and oftentimes impractical endeavor. Clemson University researchers have developed a self-healable polymeric coating that is achieved via crosslinking sugar moieties capable of self-repair and incorporating in polyurethanes. Further, the corrosion inhibition is achieved by crosslinking materials that inhibit the formation of iron containing oxides. By using this newly developed protective coating, the life of equipment or products can be significantly extended and their environmental footprint reduced.
Applications:
Sustainable coatings
Technical Summary:
Clemson researchers have developed self-healable polyurethane polymeric coatings and simultaneous corrosion inhibition when applied to metal iron substrates. Self-healing is achieved via crosslinking of chitosan with polyurethane forming components. Corrosion inhibition is achieved by crosslinking of dopamine with polyurethane as terminating chain and segments that inhibits formation of Fe+3 containing oxides. By incorporating sugar moieties into polyurethanes, these materials are able to react with atmospheric CO2 in the presence of H2O, thus reforming covalent linkages capable of bridging cleaved network segments. Mechanical properties are recovered during selfrepair process. These materials resemble behavior of plants during photosynthesis, but unlike plants, they don’t require photo-initiated reactions.
Advantages:
- Extends life of coated materials, reducing environmental footprint
- Enables self-healing and corrosion inhibition, fulfilling attributes existing materials lack
- Allows for simple, scalable manufacturing process, minimizing costs compared to previous self-healing approaches
Technology Overview
State of Development
Preliminary Prototype
Patent Type
Utility
Category
Serial Number
15,037,214
CURF Reference No.
2013-065
Inventors
Dr. Marek Urban
For More Info, Contact:
curf@clemson.edu
(864)656-0797
Contact
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