Angstron Materials was issued United States patent 8,222,190 for a nano graphene-modified lubricant. By dispersing single-layer nano graphene platelets at a weight ratio of 0.001 percent to 60 percent (based on total fluid weight) in a fluid containing a petroleum or synthetic oil, Angstron has demonstrated the ability of its NGP-modified lubricant to provide improved thermal conductivity and friction reduction. These characteristics help extend wear performance.
The NGP-modified lubricant exhibits superior lubricity at elevated temperatures. The wear volume of a steel disc lubricated with an NGP-modified fluid containing a load of 300 N demonstrated a wear rate less than half that of a lubrication fluid using graphite nano particles or carbon nanotubes. In addition to exceptional viscosity stability, the thermal conductivity values for the NGP-modified fluid are the highest on record for fluid materials.
Source: Angstron Materials news release