A temperature-mapping molecular sensor for polyurethane-based elastomers
Abstract
We present a crosslinked polyurethane elastomer featuring a thermochromic molecular sensor for local temperature analysis. The thermochrome is a modified donor-acceptor Stenhouse adduct (DASA) that was dispersed homogeneously into the polymer blend in minuscule amounts. Rapid temperature jump measurements in a pyroprobe and impacts in a Hopkinson bar show that the DASA has suitable kinetics for detecting localized temperature increase following impact or rapid heating. The thermochrome retains a signature of the peak temperature in the elastomer, allowing post-mortem mapping of micron-scale temperature localization in materials such as explosive and propellant composites. We demonstrate the concept by using the kinetics of the DASA activation to determine peak temperatures reached during bullet perforation of the polyurethane.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 25, 2016
- Source ID
- 10.1063/1.4940750
Entities
People
- A. Harper
- A. Mceachen
- B. P. Mason
- J. Hemmer
- J. P. Hooper
- Javier Read de Alaniz
- M. Whittaker
- S. Arora
- S. Helmy
- Sufian Alnemrat
Organizations
- California NanoSystems Institute
- Defense Threat Reduction Agency
- Naval Postgraduate School
- Naval Surface Warfare Center
- University of California