Preparation and Properties of Hollow Carbon Microspheres

Hollow carbon microspheres have found applications used to produce carbon foam or as functional fillers in the lightwerght composites and so on. The hollow carbon spheres were prepared by pyrolyzed the hollow phenolic resin spheres in inert gas. The compressive strengths of the hollow spheres were measured by an isotatic compression test in the different media of water, ethanol and acetone. The particle size and the crystalline of the spheres were presented. Some properties of the hollow phenolic spheres are also presented for comparison with that of hollow carbon spheres.