Cenosphere fly ash is one of the best filling materials for paint, printing ink, carbon, fiber, GRP, leatheroid, rubber plastic cenosphere is one of the ... best filling materials for paint, printing ink, carbon, fiber, GRP, leatheroid, rubber, plastic, petroleum field(anchoring ... Surface Area(m cm3)0.02-0.1Oil Absorption g(oil)/g0.68-0.69Thermal Conductivity(W/mK)0.054- ...