Formulation of highly loaded suspensions for homogeneous particle spatial distributions
Abstract
Formulation of highly loaded suspensions for homogeneous particle spatial distributionsSolid composite propellants, building materia,ls, abrasives and ceramics are often composed of high loadings of functional particles in a continuous binder material and are impor,tant materials throughout commercial applications and for naval interests. These high solids materials are challenging to design, fo,rmulate, prepare and process into final products and, as they get increasingly complex due to greater demands for performance, safet,y and stability, the need for fundamental insight into the myriad interactions in the systems and how their composition impacts thei,r properties grows more intense. In this proposed basic research, we will uncover how the continuous binder properties impact the ab,ility of the particles to remain homogeneously dispersed when subjected to external forces, including gravitational, normal and shea,r forces. We will also address the effects of particle shape, specifically how anisotropic particles change the conclusions develope,d for spherical particles in the first part of the project. The fundamental approach examining the particle spatial distribution and, rheology as a function of raw material properties with ties to physics of concentrated suspensions and wet granular materials provi,des a rigorous examination of the formulation design and will provide broadly-applicable and long-lasting insights. At the end of th,is project, we will be able to tie liquid binder properties, such as surface tension and viscoelasticity to the stability of the hom,ogeneous particle spatial distribution for different types of particles, which will enable the design of new high performance highly, loaded composites, rapid troubleshooting of failures, and agile adaptation of current formulations when specifications change. Appr,oved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 10, 2021
- Source ID
- N000142212017
Entities
People
- Blair K Brettmann
Organizations
- Georgia Tech Research Corporation
- Office of Naval Research
- United States Navy