TF-251 Phosphorus Nitrogen Flame Retardant for Polyethylenes

Halogen Free Flame Retardant of Phosphorus Nitrogen Flame Retardant for Polyethylenes

Polyethylenes are the most widely used commodity polymers with a high potential of value-adding via proper formulation development. Increasing amounts of PEs are nowadays used in electrical appliances, wires, and cables, building pipes, roofing, etc., because of their mechanical durability, good chemical resistance, low density, no toxicity, good electrical insulation, and excellent processability. However, PEs are among the most flammable materials with the high heat of combustion, low limited oxygen index (LOI), and high heat release, leaving little or no residual char. Phosphorus– and nitrogen-based compounds, including intumescent flame retardant systems (IFRs), present a viable alternative. IFRs play an effective role, mainly through a condensed-phase mechanism forming a carbonaceous foam residue (swollen char) on the surface of the polymer that acts as a heat insulator and physical barrier to the transport of oxygen and pyrolysis products.

TF-251 is a new type of environment-friendly flame retardants with P-N synergies, which is suitable for polyolefin, thermoplastic elastomer and so on.

Index

N content %                                                        ≥23%

P content %                                                       ≥19%

Moisture content%                                              ≤0.2%

Whiteness(R457)                                          ≥90.0

Bulk density(g/cm3)                                      About 0.42

TGA (on set)                                                    ≥240℃

Particle size (D50)                                       About 15µm

Proposed dosage

material                          homo-polypropylene                          co-polypropylene                PE                TPV

TF-251%                                   19-21                                             22-25                       23-25              45-50

UL-94                                         V-0                                                V-0                             V-0                  V-0

Package & storage:25kg/bag；general chemical product(s), please keep it in a cool dry place below 25 ℃, avoid direct sunlight.