Polypropylene composition for injection molding of automotive part with good appearance and preparation method thereof
A polypropylene composition and composition technology, which is applied in the field of polypropylene compositions, can solve the problems of lack of clear description, low-temperature impact performance and rigidity are not well balanced, and achieve the effect of improving appearance, good low-temperature performance and rigidity
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Embodiment 1
[0040] The composition of the polypropylene composition of this embodiment is shown in Table 2.
[0041] Raw material and consumption of table 2 polypropylene composition
[0042]
[0043] The polypropylene composition of the present embodiment, its preparation method is as follows:
[0044] The raw materials described in Table 2 are weighed according to their dosage ratios. After mixing evenly, add them to a twin-screw extruder, melt and knead at a temperature of 190-210°C, extrude and granulate, water-cool and air-dry, and the particle size is 3mm. Just pack it.
[0045] The detection results of the polypropylene composition of this embodiment are shown in Table 3.
[0046] Table 3 product performance test results
[0047] performance
[0048] Notched Izod Impact Strength -30°C
[0049] In this embodiment, ethylene-propylene block copolymer is added, and its appearance performance is better, and there is no tiger skin pattern on the surface of the wor...
Embodiment 2
[0051] The composition of the polypropylene composition of this embodiment is shown in Table 4.
[0052] Raw material and consumption of table 4 polypropylene composition
[0053]
[0054] The polypropylene composition of this embodiment, its preparation method is as embodiment 1.
[0055] The detection results of the polypropylene composition of this embodiment are shown in Table 5.
[0056] Table 5 product performance test results
[0057] performance
[0058] Appearance evaluation
Embodiment 3
[0060] The composition of the polypropylene composition of this embodiment is shown in Table 6.
[0061] Raw material and consumption of table 6 polypropylene composition
[0062]
[0063] The polypropylene composition of this embodiment, its preparation method is as embodiment 1.
[0064] The detection results of the polypropylene composition of this embodiment are shown in Table 7.
[0065] Table 7 product performance test results
[0066] performance
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