Novel Graphene Composite Powder Alternatives to Dispersions

Graphene is well known for improving performance properties that include corrosion resistance, barrier properties, and mechanical durability. The challenge for formulators has always been the ease of incorporation of graphene, which is extremely challenging. Graphene’s high surface area requires difficult incorporation processes and the handling of a dusty light material that could present workplace hazards.
One well-known solution to this challenge is to work with graphene dispersions, where the dry material has been uniformly wetted, stabilized and incorporated into a liquid matrix. These dispersed graphene powders can work quite well, but the limitations include relatively low graphene content, constraints imposed by the other ingredients used in the dispersion, and, most importantly, storage issues that include shelf stability and settling.
This presentation will introduce graphene composite powders that eliminate many of these problems and allow easy incorporation of graphene into many types of coating systems, including solvent based, water based and powder coatings.