ProFlame® PNPO-766 （AP766）
PNPO-766 is a kind of Halogen-Free flame retardant , which develops its effectiveness through phosphorus/nitrogen synergism.When the polyolefine on exposure to flame, the carbon foam layer formed protects the polymer through its heat insulating effect to reduce further oxygen access and prevent dripping of the polymer. At the same time there are no halogen hydride gases to cause.
Benefits
►Particularly effective in thermoplastic polyolefins, urethanes (e. g. integral skin
foams, rigid foams, sealants), and epoxy resins (adhesives, sealants, structural laminates, gelcoats)
►Positive secondary fire effects such as low smoke density, lower formation of toxic smoke
►Non-halogenated
Flame Retardant with favorable environmental and health profile
Technical Data:
Items Spec
Appearance White free-flowing powder
P content, % ≥23.0
N contante,% ≥14.0
1% TGA Temperature, °C ≥275
Average particle size, um D50≤15
Volatile,% ≤0.5
Whiteness ≥90.0
Processing instruction:
►On the premise of ensuring the dispersion of flame retardants and uniform blending, the processing temperature of the twin screw should not be too high. Avoid causing a small amount of decomposition of flame retardants, resulting in slight foaming. Do not add a sieve during the extrusion process, as it may cause foaming. At the same time, a certain degree of vacuum must be maintained during the twin screw extrusion process.
► Do not use substances in the system that have adverse effects on flame retardancy. For example, Cl containing pigments such as phthalocyanine green can lead to flame retardant failure. When the amount of carbon black exceeds 0.5%, the flame retardancy decreases. Inorganic fillers (such as glass fiber, calcium carbonate, talc, Barium sulfate, etc.)will affect the flame retardancy.Adding additive containing Br and Cl can lead to the failure of flame retardants.
► Use a weak shear screw combination to avoid material decomposition caused by
excessive shear heat (refer to the recommended screw combination adjustment).
