Piperazine pyrophosphate HF-T300
Intumescent halogen-free environmentally friendly phosphorus nitrogen flame retardant HF-T300 is an intumescent halogen-free environmentally friendly flame retardant. It uses phosphorus and nitrogen as a flame retardant element to form an expanded carbon layer to block oxygen and fire sources. It plays a flame retardant role. Compared with halogen-based flame retardants, it has the characteristics of low smoke and low toxicity.
Introduction: HF-T300 is an intumescent halogen-free environmentally friendly flame retardant. It uses phosphorus and nitrogen as flame retardant elements to form an expanded carbon layer to block oxygen and fire sources. Compared with halogen flame retardants, it has the characteristics of low smoke and low toxicity. It fully complies with the EU's 2002/95/EC "Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment" (RoHS Directive), and the requirements of environmental regulations such as REACH regulations. HF-T300 has excellent flame retardant efficiency, the added content is lower than that of ammonium polyphosphate system intumescent flame retardant, and its thermal decomposition temperature is high, so it can withstand higher processing temperatures.
Application: HF-T300 has a wider application range and can be used for thermoplastic resins such as PP, fiber-added PP, PE, TPE, TPU, etc., and can be adapted to injection molding, extrusion, molding and other processing methods. HF-300 can also be used in conjunction with some other phosphorus-nitrogen flame retardants to achieve better flame retardant effects.
Advantages: HF-T300 has high purity; excellent processing performance, easy cutting, no bridging; good product appearance, no agglomeration of white spots; excellent heat aging resistance and precipitation resistance.
Processing precautions:
(1) During the processing, it is recommended that the processing temperature should not be too high on the premise of ensuring uniform dispersion and blending of the flame retardant to avoid causing a small amount of flame retardant decomposition and affecting product performance. When using twin-screw blending and granulation, the processing temperature is recommended to be less than 220°C, and the screw combination should be of medium strength. At the same time, it is recommended to maintain a certain degree of vacuum during the processing.
2) Screens can be added during the extrusion process of non-fiber-added systems, but the mesh number of the screens should not be too high.
(3) Substances that have adverse effects on flame retardancy: Some inorganic fillers will affect the flame retardant effect, and calcium carbonate will seriously affect the flame retardant effect. When adding talc, barium sulfate, and wollastonite, the amount of flame retardant needs to be increased appropriately; when the amount of carbon black added exceeds 0.5% (or the amount of black masterbatch added exceeds 1%), the flame retardant effect will decrease; additives or toners containing Br and Cl (such as phthalocyanine green) may cause the flame retardant to fail.
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High Thermal Decomposition Temperature Piperazine Pyrophosphate HF-T300 For Ammonium Polyphosphate System Images
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