Title: Stable Graphene Dispersions for Composite Applications
Authors: Santosh K. Yadav, Paul A. Rettinger
Abstract: There are challenges to achieving benefits to graphene in a composite application. First, it is important to have a consistent graphene material. Consistency means that the number of layers, and degree of defects in the platelets, are consistent within a given lot of material, and from lot to lot. A second challenge is to incorporate graphene material into a liquid dispersion that is suitable for use in a composite application. One issue is that there can be environmental and safety concerns with handling of dry nanoparticles. Another issue is achieving properties. In most cases, simply adding dry powder to liquid matrix and molding the material is not sufficient to achieve benefits. An effective dispersion will require compatibility and homogeneity between the graphene material and the composite matrix into which the material is introduced. This work demonstrates a method of achieving 10 % – 30 % improvement in mechanical properties – and how it is possible to fail to do so. Similarly, this work will explain a means of achieving electrostatic dissipative conductivity, along with missteps likely to result in failure. An effective dispersion will achieve stability and homogeneity within the composite matrix from introduction through the reaction and final molding process.
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Conference: SAMPE NEXUS 2021
Publication Date: 2021/06/29
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