About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Interfacial Investigation of High Loaded Plastic Bonded Explosive Interfaces Modified via
Biologically Inspired Core-shell Coating Technique. LA-UR-21-26026 |
Author(s) |
Matthew J. Herman, Erik B Watkins, John D Yeager |
On-Site Speaker (Planned) |
Matthew J. Herman |
Abstract Scope |
Plastic-bonded explosives (PBX) are polymer matrix composites that are highly loaded with micron-scale explosive crystals. A limiting mechanical factor in a PBX is the interface between the polymer binder and the explosive. Synthetic dopamine, capable of undergoing self-polymerization and becoming polydopamine (PDA), has been demonstrated to form controllable nanometer thickness films which are capable of promoting the adhesion between the filler and binder. These films form a core-shell architecture consisting of a rigid polymer shell over the substrate. PDA film structure and growth must be understood before it can be applied in general use with high explosive (HE) materials. Neutron reflectometry, performed on the Asterix beamline at the Los Alamos Neutron Science Center, has been employed to demonstrate the controllable nature of PDA film growth and the film’s structure. Thin film composite stack-ups of inert crystal, PDA, and binder system were investigated to determine the nature of the various interfaces. |
Proceedings Inclusion? |
Planned: |
Keywords |
Surface Modification and Coatings, Characterization, Composites |