| abstract |
The present invention relates to a boron nitride aggregate wherein the boron nitride aggregate comprises hexagonal boron nitride primary particles interconnected by an inorganic bond phase comprising at least one nitride and / or an oxynitride. The present invention also relates to a method of producing such aggregates of boron nitride wherein the starting powder of boron nitride in the form of boron nitride primary particles is mixed with the binder phase feedstock, processed into granules or shaped bodies, At a temperature of 1000 DEG C or higher, and, if necessary, grinding and / or subdividing the obtained granules or shaped bodies. The boron nitride agglomerates according to the present invention are suitable as fillers for polymers used to produce polymer-boron nitride composites. |