A kind of phosphorus tailings/polypropylene composite material and preparation method thereof
A technology for composite materials and phosphorus tailings, applied in the field of phosphorus tailings/polypropylene composite materials and their preparation, can solve the problems of insufficient heat resistance, short service life, etc., so as to reduce usage, reduce production costs, and control strong effect
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[0027] The preparation process of composite material of the present invention:
[0028] Dry the phosphorous tailings in a drying oven;
[0029] The dried phosphorus tailings and polypropylene are premixed according to the formula ratio, so that the raw materials are preliminarily mixed uniformly to obtain a premix, wherein the formula ratio is counted by weight percentage, the polypropylene is 50% to 90%, and the phosphorus tailings 10% to 50%.
[0030] Put the premix into the twin-screw extruder for mixing, wherein: the twin-screw extruder is parallel twin-screw in the same phase, the length-to-diameter ratio is 32:1-48:1; the speed is 160-250r / min ; Processing temperature is 165 ~ 190 ℃.
Embodiment 1
[0036] Composition of raw materials: 95% by mass of polypropylene and 5% of phosphorous tailings.
[0037] The twin-screw extruder used is 25cm in diameter, the aspect ratio is 32:1, the speed is 210r / min, the processing temperature is 165°C in the first zone, 170°C in the second zone, 175°C in the third zone, 180°C in the fourth zone, and 170°C ℃.
[0038] The phosphorous tailings / polypropylene composite material of this example was prepared according to the above preparation method.
Embodiment 2
[0040] Composition of raw materials: 90% by mass of polypropylene and 10% of phosphorous tailings.
[0041] The twin-screw extruder used is 25cm in diameter, the aspect ratio is 32:1, the speed is 210r / min, the processing temperature is 170°C in the first zone, 175°C in the second zone, 180°C in the third zone, 185°C in the fourth zone, and 175°C in the head. ℃.
[0042] The phosphorous tailings / polypropylene composite material of this example was prepared according to the above preparation method.
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