Coating for sensing thermal and impact damage
US8980381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2007 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | May 8, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2602/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Coating compositions containing resins with dispersed nanoparticle precursors and methods for using said coatings as visual indicators of thermal and impact damage. The nanoparticle precursor/resin system reduces the nanoparticle precursor to its nanoparticle state when subjected to heat and/or physically impacted. The nanoparticles formed impart a color upon the coating at the point of exposure due to surface plasmon resonance. Microencapsulated leuco dyes are utilized to impart color when the coating is struck. The dye within the microcapsule is released as the microcapsule wall bursts or melts. Solubilizing agents can be utilized to improve the solubility of the nanoparticle precursor in the resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.