High-strength polypropylene material and preparation method thereof
A polypropylene material and polypropylene technology, applied in the field of polymer material processing, can solve the problems of difficulty in meeting the performance requirements such as transparency and safety of polypropylene materials, and achieve good industrial application prospects, high production efficiency, and significant enhancement effect. Effect
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[0035] Example 1
[0036] (1) Polypropylene (1005, Taiwan Formosa Plastics) is selected as the experimental material, and its melt index is 0.5g / 10min (210℃, 2.16Kg). Vacuum drying at 80°C for 12h in an oven.
[0037] (2) Put the dried pellets into a multi-stage stretching device consisting of an extruder (1), a manifold (2), a force assembly unit (3), and a cooling roll (4) (see figure 1 ) In the extruder. After the continuous division-deformation-superimposition of the force assembly unit, it flows out from the discharge port and is cooled by the traction cooling roller to obtain a polypropylene material with a thickness of about 1.5mm. Then the samples were annealed in a vacuum environment at 145°C for 12 hours.
[0038] In this embodiment, the force assembly unit adopts three 1-divided force assembly units.
[0039] Such as figure 1 As shown in the figure, the discharge port of the extruder in the multi-stage stretching device is connected with the feed port of the combiner, th...
Example Embodiment
[0041] Example 2
[0042] (1) Polypropylene (1005, Taiwan Formosa Plastics) is selected as the experimental material, and its melt index is 0.5g / 10min (210℃, 2.16Kg). Vacuum drying at 80°C for 12h in an oven.
[0043] (2) Put the dried pellets into a multi-stage stretching device consisting of an extruder (1), a manifold (2), a force assembly unit (3), and a cooling roll (4) (see figure 1 ) In the extruder. After the continuous division-deformation-superimposition of the force assembly unit, it flows out from the discharge port and is cooled by the traction cooling roller to obtain a polypropylene material with a thickness of about 1.5mm. Then the samples were annealed in a vacuum environment at 145°C for 12 hours. Among them, the temperature of the feeding port, conveying section, melting section, and homogenizing section of the single-screw extruder (1) are respectively 155℃, 205℃, 215℃, and 215℃; the temperature of the combiner and force assembly unit are respectively 215 ℃,...
Example Embodiment
[0046] Example 3
[0047] (1) Polypropylene (1005, Taiwan Formosa Plastics) is selected as the experimental material, and its melt index is 0.5g / 10min (210℃, 2.16Kg). Vacuum drying at 80°C for 12h in an oven.
[0048] (2) Put the dried pellets into a multi-stage stretching device consisting of an extruder (1), a manifold (2), a force assembly unit (3), and a cooling roll (4) (see figure 1 ) In the extruder. After the continuous division-deformation-superimposition of the force assembly unit, it flows out from the discharge port and is cooled by the traction cooling roller to obtain a polypropylene material with a thickness of about 1.5mm. Then the samples were annealed in a vacuum environment at 145°C for 12 hours. Among them, the temperature of the feeding port, conveying section, melting section, and homogenizing section of the single-screw extruder (1) are respectively 155℃, 205℃, 215℃, and 215℃; the temperature of the combiner and force assembly unit are respectively 215 ℃,...
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