Classification of phosphazene flame retardants

Phosphazene flame retardants include organic phosphorus flame retardants and organic phosphorus flame retardants. Organic flame retardants include: red phosphorus, ammonium polyphosphate (APP), ammonium phosphate, phosphate and polyphosphate; organic phosphorus flame retardants include: phosphate, phenanthroline (DOPO), phosphazene Compounds, organic phosphinic acids and organic phosphinates and the like.

Trichlorethylene phosphate ester, colorless to pale yellow oily liquid, chlorine content of 37.2%, phosphorus content of 10.8%, the ignition point 285 ℃, soluble in alcohol, ketone, ester, ether, toluene, benzene and other organic solvents , Insoluble in aliphatic hydrocarbons, slightly soluble in water, can improve water resistance, acid resistance, cold resistance, antistatic properties, is a halogenated phosphoric acid ester flame retardants, molecules containing halogen and phosphorus two flame retardant elements, with synergistic effect, Flame retardant effect is very significant, commonly used in unsaturated polyester, polyurethane, acrylic, phenolic resin, cellulose acetate and so on.

Tributyl phosphate (TBP) colorless liquid, phosphorus content of 11.63%, suitable for PVC polyurethane foam, CA, CAB, methyl methyl phosphate, a low viscosity colorless or light yellow transparent liquid, phosphorus content of 25% , The differentiation temperature is higher than 180 ℃, with water and a variety of organic solvents miscible as an additive flame retardant, widely used in polyurethane foam, unsaturated polyester and epoxy resin.

Phosphazene flame retardants

Microencapsulated red phosphorus (organic) surface is dark purple powder, red phosphorus content of 85%, natural point 300-350 ℃, important for PE, PP, EVA, PC, PA, PBT, PET and epoxy, phenolic, unsaturated Polyester, etc., exceptionally suitable for a large number of flame retardants to meet the requirements of the finished product. Ammonium polyphosphate (organic) is a red powder. The content of P2O5 is 655, the content of nitrogen is 12% and the temperature is 250 ℃. It can be used in flame retardant plastic, fiber, rubber, paper and lumber. As an acid source and carbon source and gas source can be used to form a shrinkage retardant.