Self-healing polymer compositions

摘要

This invention pertains to a composition that can be used to heal cracks in plastics and other substrates. In the present invention, a composition comprising nanotubes, healing agent(s), and end caps for the nanotubes may be used to heal crack(s) as they begin to occur. With the composition, the healing agent(s) are contained within the nanotubes, and a reaction releases the healing agent(s) after the end caps can be removed from the nanotubes. This invention also includes a method of preparing a composition for healing cracks in plastics and other substrates. For this method, the healing agent(s) are filled inside of the nanotubes, and then end caps are bound onto the ends of the nanotubes. After a reaction occurs to remove the end caps and release the healing agent(s), the cracks within the substrate may then be healed.

主权项

1. A composition for healing cracks in an associated substrate comprising:
carbon nanotubes; at least two healing agents inside said nanotobes, wherein one of said healing agents is a polyol and one of said healing agents is an isocyanate, wherein a functional group of said polyol agents is chemically protected by a silyl group, wherein said silyl group is capable of being removed by hydrolysis; and end caps bound onto both ends of said nanotubes, wherein both end caps are closed.