Arameter: Particle size (um) : 75-150 Ratio of sphere (% ) : >85 Average bulk density (g / cm3) : 0. 30-0. 60 Melting temperature ('c) : 1200-1750 Dielectric constant () : 2. 3-2. 4 Oil absorption g (oil) / 100g: 16-18 Hardness (mohs scale) : 5-7 Lost in ignition: (% ) : <1 Thermal conductivity w / (m) : 0. 07-0. 12 Compressive strength (KG / cm2) : 1000-6000 Volume resistance () : 1. 5 x 1010 Specific surface area (m2 / g) : 1. 9 (3um) Major advantages: 1. Resistant to corrosion, stable in various types of organic solvents, acid and alkali solvents and nonsusceptible to chemical reaction. 2. Improves the flowability and processibility of filled materials. 3. Low oil absorption enables cenosphere to effectively reduce the contraction rate of filled materials. 4. Excellent electrical insulation and applicability to high-insulation polymers as filler. 5. Great difference in average bulk density for cenosphere of various types and particle sizes, available for different applications. 0. 45g / cm3 unit weight minimum. Greatly reduces the weight and cost of filled products. 5. Excellent high-temperature behavior, high melting point, nondecomposable and nondeformable under high temperature. Improves fire retardancy and high-temperature behavior of filled products. Major applications: 1. Polymeric materials; 2. Aluminum-based materials; 3. Paint; 4. Absorbing-light materials; 5. Reflecting mater 6. Ials 7. Electromagnetic radiation resistant materials; 8. Insulating materials 9. Buoyant materials; 10. Powder metallurgical materials; 11. Emulsified explosive; 12. Aerospace materials; 13. Dampening materials;