Antibacterial, low-odor and flame-retardant polypropylene composite material and preparation method for same
A technology of flame-retardant polypropylene and composite materials, applied in the field of plastics, can solve the problems of continuous fire accidents and economic losses, and achieve the effects of good thermal stability, reduced odor, and stable physical and chemical properties
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Embodiment 1
[0034] (1) Take various raw materials respectively by formula ratio;
[0035]
[0036]
[0037] (2) Add the above-mentioned polypropylene resin, barium sulfate, high-efficiency antimony-free and non-precipitating flame retardant, deodorant masterbatch, antibacterial agent, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 2 minutes;
[0038] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 190°C, the screw speed is 500r / min, and the melt pressure is 1.6MPa ; The vacuum degree is -0.04~-0.06MPa, that is, the antibacterial, low-odor and flame-retardant polypropylene composite material can be obtained.
Embodiment 2
[0040] (1) Take various raw materials respectively by formula ratio;
[0041]
[0042] (2) Add the above-mentioned polypropylene resin, barium sulfate, high-efficiency antimony-free and non-precipitating flame retardant, deodorant masterbatch, antibacterial agent, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 3 minutes;
[0043] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 200°C, the screw speed is 550r / min, and the melt pressure is 1.8MPa ; The vacuum degree is -0.06~-0.08MPa, that is, the antibacterial, low-odor and flame-retardant polypropylene composite material can be obtained.
Embodiment 3
[0045] (1) Take various raw materials respectively by formula ratio;
[0046]
[0047] (2) Add the above-mentioned polypropylene resin, barium sulfate, high-efficiency antimony-free and non-precipitating flame retardant, deodorant masterbatch, antibacterial agent, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 2 minutes;
[0048] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 200°C, the screw speed is 600r / min, and the melt pressure is 1.7MPa ; The vacuum degree is -0.07~-0.09MPa, that is, the antibacterial, low-odor and flame-retardant polypropylene composite material is obtained.
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