Aqueous suspension and cutting fluid including the same

Abstract

Proposed is an aqueous suspension including water, a hexagonal boron nitride (hBN) particle, and a dispersant. A cutting fluid prepared by diluting the aqueous suspension with water is also proposed. The hexagonal boron nitride (hBN) particle is a hydrophilic particle that is wettable with water. The hexagonal boron nitride (hBN) particle has a particle size D50 of 30 to 250 nm and a particle size D90 of 1 um or less for a primary particle and a secondary particle through an application of ultrasound for 24 hours. The hexagonal boron nitride (hBN) particle is synthesized at a temperature of 1600° C. or lower. The hexagonal boron nitride (hBN) particle is mixed with water at a weight ratio of 10 or less, and the dispersant is mixed at a weight ratio of 10 or less.

Dependencies are inferred from the claim text.