METHOD AND APPARATUS FOR THE PRODUCTION OF ULTRAFINE PARTICLES AND RELATED COATING COMPOSITIONS

摘要

Disclosed are an apparatus and a method for making ultrafine particles and coating compositions comprising ultrafine particle. The method for making ultrafine particles comprises: introducing and heating a precursor into a high temperature chamber (plasma), yielding to a gaseous product stream; passing the gaseous product stream through a converging member and; contacting the gaseous product with quench streams injected at flowrates and injection angles that result in the impingement of the quench streams with each other within the gaseous product stream, thereby producing ultrafine particles.