Environment friendly fire retardant no-halogen PC composite material and its preparation method
A composite material and environmental protection technology, which is applied in the field of non-halogen environment-friendly flame retardant PC composite material and its preparation, can solve the problems of insufficient filling fluidity of injection-molded thin-walled plastic parts and high injection molding temperature, and achieve good fluidity, The effect of easy injection molding
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Embodiment 1
[0022] Example 1: Premix is prepared according to the following formula: polycarbonate 91%, silicon flame retardant 1%, flame retardant anti-dripping agent 1%, potassium sulfonate 1%, antioxidant 6%. The mixed premix is placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.
Embodiment 2
[0023] Example 2: Premix is prepared according to the following formula: polycarbonate 90%, silicon flame retardant 3%, flame retardant anti-dripping agent 2%, potassium sulfonate 1%, antioxidant 4%. The mixed premix is placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.
Embodiment 3
[0024] Embodiment 3: The premix is prepared according to the following formula: polycarbonate 92%, silicon flame retardant 4%, flame retardant anti-dripping agent 0.5%, potassium sulfonate 0.5%, antioxidant 3%. The mixed premix is placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.
[0025] The following table is the performance comparison table of the non-halogen environment-friendly flame-retardant PC of GE company in the prior art: 945-701# and the non-halogen environment-friendly flame-retardant PC composite material embodiment 1-3 of the present invention:
[0026] Test items
GE company
945-701#
Example 1
Embodiment 2
Embodiment 3
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