Polypropylene composite material and preparation method and application thereof
A composite material and polypropylene technology, applied in the field of polypropylene composite materials and its preparation, can solve the problems of poor compatibility between fibers and polypropylene matrix, poor mechanical properties, etc., achieve excellent mechanical properties, light weight, and promote fiber dispersion Effect
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Embodiment 1
[0049] First, at an ambient temperature of 25°C, use a high-speed mixer to mix the raw materials weighed according to the following formula to obtain a uniformly mixed material; then, add the mixed material to a twin-screw extruder for melt blending (mixing The final materials are successively passed through the melting and blending intervals with temperatures of 170°C, 172°C, 172°C, 175°C, 180°C, 180°C, 175°C, and 175°C) and then stretched, air-cooled, pelletized, and sealed for packaging. The mixed masterbatch is obtained, that is, the hemp fiber reinforced polypropylene composite material. The screw length-to-diameter ratio of the twin-screw extruder used was 40:1.
[0050]
Embodiment 2
[0052] Carry out embodiment 2 in the same manner as embodiment 1, difference is that embodiment 2 adopts the raw material component weighed by following formula:
[0053]
Embodiment 3
[0055] Carry out embodiment 3 in the same manner as embodiment 1, difference is that embodiment 3 adopts the raw material component weighed by following formula:
[0056]
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