High melt index polypropylene with low odor and narrow molecular weight distribution and preparation method thereof
A technology of narrow molecular weight distribution and molecular weight distribution, which is applied in the field of high melting index polypropylene and its preparation, can solve the problems of narrow molecular weight distribution of high melting index polypropylene, uneven meltblown cloth, good meltblown effect, etc., and achieve small molecular weight Fewer products, stable process, and improved production environment
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Embodiment 1
[0046] Mix 98.75 parts of 225 powder, 0.1 part of antioxidant 1010, 0.2 part of calcium stearate, and 0.2 part of CS6993 into the twin-screw extruder, and inject 0.75 parts of DTBP into the extruder through a liquid pump. In stage 3, the rotation speed of the extruder is 400r / min, and the high melting index polypropylene obtained after cooling and pelletizing is denoted as A1.
Embodiment 2
[0048] Mix 98 parts of 225 powder, 0.1 part of antioxidant 1010, 0.2 part of calcium stearate, and 0.2 part of CS6993 into the twin-screw extruder, and inject 1.5 parts of DTBP into the extruder through a liquid pump. In the third stage, the rotation speed of the extruder is 400r / min, and the high melting index polypropylene obtained after cooling and pelletizing is denoted as A2.
Embodiment 3
[0050] Mix 98 parts of 225 powder, 0.1 part of antioxidant 1010, 0.2 part of calcium stearate, and 0.2 part of CS6993 into the twin-screw extruder, and inject 1.5 parts of DTBP into the extruder through a liquid pump. In the third stage and the fourth stage, the injection volume of each stage is 0.75 parts, the rotation speed of the extruder is 400r / min, and the high melting index polypropylene obtained after cooling and pelletizing is designated as A3.
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