P-N Intumescent Flame Retardant EPFR-APP for Coati

EPFR-APP(II) is a kind of intumescent inorganic flame retardant with high content of phosphor & nitrogen, excellent thermal stability, near-neutral and non-toxic smoke. With gas source and carbon source, this flame retardant takes effectby char formation and intumescent mechanism. With the characteristics as high polymerization degree, narrow distribution, and high purity of type II structure, this flame retardant has low water solubility, high initial decomposition temperature, relatively lower viscosity, more stable carbonized layer & fire resistant effect. Physical Properties: EPFR-APP222(without surface treatment) AppearanceWhite PowderPhosphorContent %30 - 32Density g/cm31.9NitrogenContent %14 - 15Bulk Density g/ml0.7Decomposition Temp. °c>260pH Value (25°c, 10% suspension)5 - 7Water Solubility %<0.2Viscosity (25°c, 10% suspension)≤100Average Particle Size µm 10Water content %<0.5Toxicity & Environment HarmfulNot DetectedApplication: water-based and solvent-based coating, textile coating, epoxy and unsaturated polyester resin, foaming PU. EPFR-APP231(surface treated with melamine) AppearanceWhite PowderPhosphorContent %29- 31Density g/cm31.9NitrogenContent %14.5 - 15.5Bulk Density g/ml0.7Decomposition Temp. °c>280pH Value (25°c, 10% suspension) 7Water Solubility %<0.2Viscosity (25°c, 10% suspension)≤20Average Particle Size µm 10Water content %<0.5Toxicity & Environment HarmfulNot Detected Application: rubbers and plastics. EPFR-APP241(surface treated with silane) AppearanceWhite PowderPhosphorContent %30 - 32Density g/cm31.9NitrogenContent %14 - 15Bulk Density g/ml0.7Decomposition Temp. °c>280pH Value (25°c, 10% suspension)6- 7Water Solubility %<0.2Viscosity (25°c, 10% suspension)≤15Average Particle Size µm 10Water content %<0.5Toxicity & Environment HarmfulNot Detected Application: water-based and solvent-based coating, textile coating, epoxy and unsaturated polyester resin, foaming PU, cable coating, rubbers and plastics. Temperature comparison Particle size distribution: TGA curve: Water absorption: NMR: IR: X-ray Diffraction: Comprehensive performance comparison